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NetViewSoftware Manual
Version 1.1Last Revised August 3, 2011All contents in this
manual are copyrighted by JAVAD GNSS.All rights reserved.The
information contained herein may not be used, accessed, copied,
stored, displayed, sold, modified, published, or distributed, or
otherwise reproduced without express written consent from JAVAD
GNSS
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www.javad.com
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TABLE OF CONTENTS
Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5Terms and Conditions. . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5About this Manual . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7Technical Assistance . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7
Chapter 1. Getting Started . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 91.1.
Setting up NetView . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
1.1.1. System requirements . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 101.1.2.
Installing NetView . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . 101.1.3.
Uninstalling NetView . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . 11
1.2. Getting Connected . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
111.2.1. Starting NetView. . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111.2.2.
Establishing connection. . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . 121.2.3. TCP
connection . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . 131.2.4. Serial
connection . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . 131.2.5. USB
connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . 141.2.6. CAN connection
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . 151.2.7. Closing NetView . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . 15
Chapter 2. Operation. . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172.1.
Working with the receiver . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2.1.1. Measurements tab . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182.1.2.
Sky Plot tab . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . 202.1.3.
Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . 202.1.4.
Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
2.2. Configuring the Receiver. . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
222.2.1. General tab . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
232.2.2. TriPad . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
252.2.3. Positioning. . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
282.2.4. Base . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
342.2.5. Rover . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
372.2.6. Ports. . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
402.2.7. Networking Tab. . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 442.2.8.
Event Tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . .
513www.javad.com
2.2.9. Advanced. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
52
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2.3. Manual Mode . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
582.3.1. Load Script Button . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
2.4. Working with Files . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
61
Chapter 3. Examples . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 633.1.
Usage of TCPO for corrections transmitting . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . 63
3.1.1. Base Configuration. . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 633.1.2.
Rover Configuration. . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . 644 www.javad.com
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PREFACE
The materials available in this User Manual (the Manual) have
been prepared by JAVAD GNSS forowners of JAVAD GNSS products. It is
designed to assist owners with the operating of the NetViewSoftware
and its use is subject to these terms and conditions (the Terms and
Conditions).
Note: Please read these Terms and Conditions carefully.
Terms and ConditionsUSE JAVAD GNSS products are designed to be
used by a professional. The user is expected to have agood
knowledge and understanding of the user and safety instructions
before operating, inspecting oradjusting. Always wear the required
protectors (safety shoes, helmet, etc.) when operating the
receiver. COPYRIGHT All information contained in this Manual is the
intellectual property of, and copyrightedmaterial of JAVAD GNSS.
All rights are reserved. You may not use, access, copy, store,
display, createderivative works of, sell, modify, publish,
distribute, or allow any third party access to, any
graphics,content, information or data in this Manual without JAVAD
GNSS express written consent and may onlyuse such information for
the operation of your software. The information and data in this
Manual are avaluable asset of JAVAD GNSS and are developed by the
expenditure of considerable work, time andmoney, and are the result
of original selection, coordination and arrangement by JAVAD
GNSS.TRADEMARKS NetView, JAVAD GNSS are trademarks or registered
trademarks of JAVADGNSS. Windows is a registered trademark of
Microsoft Corporation, Bluetooth word mark is ownedby the Bluetooth
SIG, Inc. Product and company names mentioned herein may be
trademarks of theirrespective owners.DISCLAIMER OF WARRANTY EXCEPT
FOR ANY WARRANTIES IN THIS GUIDE OR AWARRANTY CARD ACCOMPANYING THE
PRODUCT, THIS GUIDE AND SOFTWARE AREPROVIDED AS-IS. THERE ARE NO
OTHER WARRANTIES. JAVAD GNSS DISCLAIMS ANYIMPLIED WARRANTY OF
MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR USE ORPURPOSE. JAVAD
GNSS AND ITS DISTRIBUTORS SHALL NOT BE LIABLE FOR TECHNICALOR
EDITORIAL ERRORS OR OMISSIONS CONTAINED HEREIN; NOR FOR INCIDENTAL
ORCONSEQUENTIAL DAMAGES RESULTING FROM THE FURNISHING, PERFORMANCE
ORUSE OF THIS MATERIAL. SUCH DISCLAIMED DAMAGES INCLUDE BUT ARE NOT
LIMITEDTO LOSS OF TIME, LOSS OR DESTRUCTION OF DATA, LOSS OF
PROFIT, SAVINGS ORREVENUE, OR LOSS OF THE PRODUCT'S USE. IN
ADDITION, JAVAD GNSS IS NOTRESPONSIBLE OR LIABLE FOR DAMAGES OR
COSTS INCURRED IN CONNECTION WITHOBTAINING SUBSTITUTE PRODUCTS OR
SOFTWARE, CLAIMS BY OTHERS,INCONVENIENCE, OR ANY OTHER COSTS. IN
ANY EVENT, JAVAD GNSS SHALL HAVE NO5www.javad.com
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Preface
Terms and Conditions
LIABILITY FOR DAMAGES OR OTHERWISE TO YOU OR ANY OTHER PERSON OR
ENTITY INEXCESS OF THE PURCHASE PRICE FOR THE NETVIEW SOFTWARE.
LICENSE AGREEMENT Use of any computer programs or software supplied
by JAVAD GNSS ordownloaded from a JAVAD GNSS website (the Software)
in connection with the JAVAD GNSSreceivers constitutes acceptance
of these Terms and Conditions in this Manual and an agreement to
abideby these Terms and Conditions. The user is granted a personal,
non-exclusive, non-transferable license touse such Software under
the terms stated herein and in any case only with a single
computer. You may notassign or transfer the Software or this
license without the express written consent of JAVAD GNSS.
Thislicense is effective until terminated. You may terminate the
license at any time by destroying the Softwareand Manual. JAVAD
GNSS may terminate the license if you fail to comply with any of
the Terms orConditions. You agree to destroy the Software and guide
upon termination of your use of software. Allownership, copyright
and other intellectual property rights in and to the Software
belong to JAVADGNSS. If these license terms are not acceptable,
return any unused software and guide.CONFIDENTIALITY This Manual,
its contents and the Software (collectively, the
ConfidentialInformation) are the confidential and proprietary
information of JAVAD GNSS. You agree to treatJAVAD GNSS'
Confidential Information with a degree of care no less stringent
that the degree of care youwould use in safeguarding your own most
valuable trade secrets. Nothing in this paragraph shall restrictyou
from disclosing Confidential Information to your employees as may
be necessary or appropriate tooperate NetView Software. Such
employees must also keep the Confidentiality Information
confidential.In the event you become legally compelled to disclose
any of the Confidential Information, you shall giveJAVAD GNSS
immediate notice so that it may seek a protective order or other
appropriate remedy.WEBSITE; OTHER STATEMENTS No statement contained
at the JAVAD GNSS website (or any otherwebsite) or in any other
advertisements or JAVAD GNSS literature or made by an employee
orindependent contractor of JAVAD GNSS modifies these Terms and
Conditions (including the Softwarelicense, warranty and limitation
of liability). MISCELLANEOUS The above Terms and Conditions may be
amended, modified, superseded, orcanceled, at any time by JAVAD
GNSS. The above Terms and Conditions will be governed by,
andconstrued in accordance with, the laws of the State of
California, without reference to conflict of laws. 6
www.javad.com
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Preface
About this Manual
Symbols and Typographic Conventions
About this ManualThis Manual is designed to help you get
familiar with the NetView User Interface and introduce you tothe
NetView main features.
Symbols and Typographic ConventionsThis Manual uses the
following text conventions:Example Description.Main Titles of
dialog windows/boxes, names of menu options.
Screen CapturesThis Manual includes sample screen captures. Your
actual screen can look slightly different from thesample screen due
to the receiver you have connected, operating system used and
settings you havespecified. This is normal and not a cause for
concern.
Technical AssistanceIf you have a problem and cannot find the
information you need in the product documentation, contactyour
local dealer. Alternatively, request technical support using the
JAVAD GNSS World Wide Web siteat: www.javad.com.To contact JAVAD
GNSS Customer Support use the QUESTIONS button available on
thewww.javad.com.7www.javad.com
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Preface
Technical AssistanceScreen Captures8 www.javad.com
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Chapter 1
GETTING STARTED
NetView is a Windows application for controlling navigation
receivers developed and manufactured byJAVAD GNSS. Before you start
using NetView, you should become familiar with its functions and
learnhow to install, launch, exit, and uninstall the program.
NetView software provides the following functionality:
Directly connect to the receiver(s), using one of the following
interfaces: serial, USB, TCP/IP(through the Ethernet ports or WiFi
adapter), Secure TCP/IP (SSL/TSL), Bluetooth, CAN (KvaserCAN
Interface).
5 slots to store the most frequently used connection settings.
Displaying of the total number and the status of all visible and
tracked satellites. Displaying the receivers current position and
time in real time. Real time satellites mapping. Setup of various
parameters of receiver. Clear NVRAM, receiver reset, return to the
initial parameter values. Start and stop file recording, deleting
files, downloading files using file manager. Display of the current
receiver options and loading of Option Authorization Files into the
receiver. Manual mode terminal allows sending commands with prompt
tip and view receiver response.
This terminal supports a TCL script language to automate the
common receiver control tasks. Connecting to multiple receivers.
Support for multiple connections to the receiver for optimized
simultaneous work Update firmware direct from the JAVAD GNSS
website by the user request. (Support is available
starting with firmware version 3.2.1).9www.javad.com
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Getting Started
Setting up NetViewSystem requirements
1.1. Setting up NetView
1.1.1. System requirements
Check that you have the following required (or recommended)
items before installing and using NetView. PC-compatible with Intel
Pentium 1.2 GHz or faster1. 100 MB free disk space. 512 MB RAM or
more (1024 MB recommended). 32-bit or 64-bit operating system such
as MS Windows NT, 2000, XP, Windows Server 2003,
Windows Server 2008, VISTA, Windows 7. Color monitor at 800x600
screen resolution. Microsoft Internet Explorer version 6 or higher
(for some functions).
1.1.2. Installing NetView
NetView is available from the JAVAD GNSS website. 1. If
downloading the program from the website, extract the program files
into a folder on your hard
drive.2. Navigate to the location of the NetView program and
double-click the Setup.exe icon.3. The installation process will be
started. Click Install to install the software. Click Dont install
to
quit,
Figure 1-1. Installation10 www.javad.com
1. Processor speed, RAM and disk space depends on the number of
concurrent receivers
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Getting Started
Getting Connected
Uninstalling NetView
1.1.3. Uninstalling NetView
To uninstall NetView use the Add and Remove Programs from the
Control Panel.1. Open the Control Panel, then Add or Remove
Programs tool. Find NetView, and click Change/
Remove.
2. This will uninstall NetView.
1.2. Getting Connected
1.2.1. Starting NetView
NetView can be launched, as any other Windows program, for
example, with the StartAll ProgramsJAVAD GNSS NetView.Once NetView
is launched, the Start window will appear (Figure
1-2):11www.javad.com
Figure 1-2. Start window
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Getting Started
Getting ConnectedEstablishing connection
Get started - opens the software user manual Visit NetView page
- opens software page on JAVAD GNSS web site Visit JAVAD GNSS web
site - opens www.javad.com
1.2.2. Establishing connection
Click Connect. The dialog window with the connection settings
appears (Figure 1-3).
Figure 1-3. Connection window
Click the drop-down list box and select the desired connection
type: TCP - to establish connection between your computer and
remote receiver; SER - to establish a connection between your
computer and the receiver using serial ports; USB - to establish a
connection between your computer and the receiver using USB port;
CAN - to establish a connection between your computer and the
receiver using CAN ports;
If you plan to use such type of connection in the future, click
on Save to Slot 1 button. The connectionsettings will be saved. You
can use up to 5 slots to save connection settings.
Note: The number of the slots does not limit the number of
receivers that can be connected. The receiversnumber is limited
only by the performance of your computer.
To connect to the receiver, click Connect. The result can be
seen in the table Last Connections. If yourconnection settings are
correct, a new receiver will be added in the navigation bar. Please
see below the detailed description of the connection settings
window. 12 www.javad.com
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Getting Started
Getting Connected
TCP connection
1.2.3. TCP connection
This method is used when you have an existing local area network
(LAN) consisting of a group ofcomputers and network communication
devices interconnected and a JAVAD GNSS receiver that youwant to
place on this LAN. This method is also used to connect a JAVAD GNSS
receiver directly to theInternet and access this receiver from a
remote PC, connected to the Internet.If the TCP connection will be
used, set the following parameters (Figure 1-4):
Figure 1-4. TCP connection settings
Address - Host name or IP address of the receiver; Port - TCP
port of the receiver. This is the port on which the receiver
listens for telnet-like
connections. The receiver allows up to five simultaneous
telnet-like connections. Logical port - one of the five logical
port mapping (a, b, c, d, e). If the value is empty, then the
connection is established with the first free logical port;
Password - an arbitrary sequence of characters (if you do not want
to use any password, you may
simply leave this field blank) SSL/TSL - Enables/disables the
encrypting with cryptographic protocols that provide
communications security over the Internet. This parameter should
correspond with receiverssettings.
1.2.4. Serial connection
To establish a connection between your computer and the receiver
using serial ports, follow these steps:1. Connect one of the
available receivers port (usually A) to a communication port on the
computer
using a Receiver-to-Computer RS-232 serial cable.2. Supply power
to the receiver and computer, then turn them on.
If the serial connection will be used, set the following
parameters (Figure 1-5):
Figure 1-5. Serial port connection settings
Port - serial port from a list of the ports available in the
system the receiver is connected to; Parity - method for
determination of transmission errors; Baud rate - data transfer
rate 13www.javad.com
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Getting Started
Getting ConnectedUSB connection
Data bits - number of data bits in a symbol; Stop bits -
duration of the stop bit; Rts enable - Control Data
1.2.5. USB connection
Before connecting a USB equipped JAVAD GNSS receiver with PCs
USB port, make sure that you havethe USB Port option enabled in the
receiver and the JAVAD GNSS USB driver installed on the
computer.This driver is available on the JAVAD GNSS website:
www.javad.com.
Installing Driver
The driver installation procedure varies slightly depending on
the operating system used. In general, theinstallation procedure is
as follows:
1. Visit the JAVAD GNSS website. Download the USB driver.2.
Unpack the archive into a separate, empty folder. 3. Connect the
receiver to the computer through the supplied USB cable. Turn the
receiver on.4. Windows will automatically detect the new hardware
device. Follow the on-screen instructions to
finish installation process.After Windows finishes installing
the driver, you will be able to connect the receiver and the
computer viaUSB portsIf the USB connection will be used, set the
following parameters (Figure 1-6):
Figure 1-6. USB connection settings
Select the required ID from the list. 14 www.javad.com
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Getting Started
Getting Connected
CAN connection
1.2.6. CAN connection
Before connecting a CAN equipped JAVAD GNSS receiver with PCs,
make sure that you have the CANPort option enabled in the receiver.
If the CAN connection will be used, set the following
parameters(Figure 1-7):
Figure 1-7. CAN connection settings
Channel - allows selecting channel; Baud rate - data transfer
rate;
Connection via CAN allows you to connect multiple receivers,
which are in the same CAN network. Inthis case, the incoming (In)
and outgoing (Out) identifiers should not overlap the ranges. All
devices areone of CAN networks operate at one speed. The software
supports only Kvaser (http://kvaser.com)adapters.
1.2.7. Closing NetView
To disconnect from the receiver, click the Disconnect button on
the receivers page or just close theapplication to quit NetView
(Figure 1-8).
Figure 1-8. Disconnecting15www.javad.com
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Getting Started
Getting ConnectedClosing NetView
If the receiver has not been disconnected by the time the
program is terminated, the connection will beautomatically broken
before NetView is closed.
Note: It is strongly recommended to close the connection with
the receiver and close NetView prior to switchingthe receiver off
and disconnecting the cable.16 www.javad.com
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Chapter 2
OPERATION
NetView allows you to manage and control the GNSS receivers
manufactured by JAVAD GNSS, and ithas a user friendly
interface.
2.1. Working with the receiver
Connect to the receiver as described in Getting Connected on
page 11. Click on the item Receivers onthe navigation bar. The list
of connected receivers will appear (Figure 2-1).
Figure 2-1. Connected receiver
In the left pane of the program there is a navigation bar. This
pane is arranged as a tree whose nodes canbe expanded by mouse
click. Clicking on the elements of the navigation pane on the right
pane a pagewith relevant content appears. In this case, the active
element remains selected. On the right pane thefollowing
information about receiver(s) is displayed:
Green flag Connected indicates that the receiver is now
connected and you can work with it; The name of the receiver; Rec -
the current files, which are logging; Receivers memory
capacity;17www.javad.com
Connection type
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Operation
Working with the receiverMeasurements tab
Point the receivers name on the left pane, a tooltip will popup
with detailed information about thereceiver will appear. When you
click on the name of the receiver, the status page with detailed
information for the selectedreceiver will be displayed (Figure
2-2). This page shows the appearance of the receiver, its
characteristics,the available connections, table of satellites.
Tabs available Sky Plot, Orientation, Options, Settings.To view and
upload options of the receiver use the tab Options. To upload a new
options file, click onUpload, and select the options file.
Figure 2-2. Information about receiver
Below are described tabs on the right pane.
2.1.1. Measurements tab
Measurements tab (Figure 2-2) displays the basic tracking
information (parameters) for the lockedsatellites. It shows the
receiver target point current position, receiver coordinates and
the time-frequencyparameters describing the behavior of the
receivers local oscillator. The various navigation information is
displayed, specifically:
Geodetic coordinates1
- Lat, Lon latitude/longitude; - Alt ellipsoidal height.
Velocity 2D (magnitude of the) velocity (m/s). 18
www.javad.com
1. These geodetic coordinates are computed in WGS 84 regardless
of the current value of /par/pos/datum/cur.
-
Operation
Working with the receiver
Measurements tab
Position RMS rms position error1 (m). Velocity RMS rms velocity
error* (m/s). PDOP Position dilution of precision. Solution
type:
- Standalone/ Code differential/ RTK float / RTK fixed/WAAS DGPS
differential Receiver time shows the receivers current time within
day. This value is taken from the message
[~~]. For more information about [~~], see the GREIS Reference
Manual. Note: Currently the message [~~] reports the time within
day in the GPS time scale only.
Receiver date shows the receivers current date as specified in
the corresponding [RD] message. Clock offset describes the time
derivative of (Tr Trr), where Tr designates the receiver time,
Trr
designates the receiver reference time. For more information
about Tr and Trr, see the GREISReference Manual. This parameter is
obtained from the [DO] message and is expressed in ppm.
Osc. offset is derived from the message [OO] and it is expressed
in ppm. The parameter describesthe difference between the VCOs
nominal and quiescent frequencies.
Tracking time is the time elapsed since the last complete
loss-of-lock event in the receivers C/Achannels as specified in the
corresponding [TT] message.
The tracking parameters displayed in table are described below:
Table 2-1. Tracking Parameters
Parameter Description
# GPS SV PRN. If the character * is shown next to PRN in the
column, this means that almanac data are unavailable for the
corresponding satellite. Galileo PRN. SBAS PRN.
Sn GLONASS SV Orbital Slot Number. If the character * is shown
next to Sn in the column, this means that almanac data are
unavailable for the corresponding satellite.
Fn GLONASS SV Frequency Number.
EL Elevation angle in degrees. The signs + and -immediately
following the elevation angles indicate that the corresponding
satellites are ascending and descending, respectively. If a
satellite is at apogee, it is marked with ^.
AZ Azimuth in degrees
CA Signal-to-noise ratio (C/N0) in the C/A channel [dB*Hz] P1
Signal-to-noise ratio (C/N0) in the P1 channel [dB*Hz] P2
Signal-to-noise ratio (C/N0) in the P2 channel [dB*Hz] TC Time
elapsed since the last loss-of-lock in the C/A channel for the
corresponding satellite.
This time is given in minutes or, if the symbol : is specified
in the column, in seconds.
SS Satellite navigation status. For a complete description of
the satellite navigation status structure, see Appendix. If a
satellite is not used in position computation, its SS flag will be
set to -. Otherwise + will be displayed. 19www.javad.com
1. More precisely, this is the square root of the trace of the
position error variance-covariance
-
Operation
Working with the receiverSky Plot tab
Note: Empty cells will be displayed everywhere in the panels
where the corresponding parameters areunavailable.
2.1.2. Sky Plot tab
The Sky Plot tab shows graphic representation of the satellite
positions in the sky (Figure 2-3):
Figure 2-3. Sky plot tab
Each concentric circle represents the elevation angle above the
horizon. The outermost circle correspondsto 0 degrees above the
horizon. The center of the sky plot represents 90 degrees above the
horizon. Thedotted circle shows the position computation elevation
mask angle.The flags on the right allow the user to select the
desired system to be displayed on the right plot.
2.1.3. Options
To view and upload options of the receiver use the tab Options
(Figure 2-4 on page 21). Here you cancheck the status of your
receivers options and load new Option Authorization Files (OAFs) to
thereceiver. This window contains the following information:
Option name a name/description of the option Current shows if
the option is in force at the present or not Purchased if the
option is purchased or not Leased if the option is leased or not
Expiration date the date the leased option will be disabled, if
applicable
Since Options can be both purchased and leased, the Current
status of the option displays the currentlyeffective value. Option
values can be:
---- the firmware version does not support this option or the
receiver option is disabled.20 www.javad.com
positive integer the option is enabled with a specified
value.
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Operation
Working with the receiver
Settings
yes or no the option is either enabled or disabled.To upload a
new options file, click on Upload button, and select the options
file. Refresh Updates thewindow (Figure 2-4).
Figure 2-4. Options tab
2.1.4. Settings
In the Settings tab you can configure the receiver (Figure
2-5).
Figure 2-5. Settings tab
Set up the receiver name in the Display Name field. Setup the
site configuration parameters used in the RINEX-conversion:
Site Name The site identification string (up to 20 alphanumeric
characters). Antenna Status This control allows the user to define
whether the receiver antenna is in motion
or is motionless. Antenna Height The height of antenna, measured
from the survey marker to the measuring21www.javad.com
mark of antenna. The measuring mark is the antenna reference
point (ARP) if you use the vertical
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Operation
Configuring the ReceiverSettings
height or a known measuring mark (usually antenna edge) on the
antenna if you use the slantheight.
Slant Enable this checkbox if you measure the slant height.
Otherwise, leave it blank. Antenna Type Select the type of antenna
you use.
2.2. Configuring the Receiver
Select the desired receiver in the navigation pane, and expand
the elements of the receiver by doubleclicking on the Receiver.
Select Parameters item (Figure 2-6).
Figure 2-6. Receiver parameters22 www.javad.com
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Operation
Configuring the Receiver
General tab
2.2.1. General tab
The General tab is shown on the Figure 2-7. The general
parameters such as elevation mask and antennatype can be specified
in this tab, and information about the voltage, temperature, etc.
can be checked.
Figure 2-7. General tab
Note: The basic receivers parameters can be changed in the right
pane. Symbol * indicates that the parameter was changed, but not
accepted by receiver. To accept the changesand save them in
receivers memory click Apply.
Note: The tooltip popup menu will appear always when pointing
the cursor on the parameter on the right pane.
Elevation mask
In the Elevation Mask for Position Computation edit box, the
user enters the minimum elevation (i.e., theelevation mask angle)
for the satellites whose data will be output to the current
terminal (i.e., the receiverport being used for communication).
Antenna
The Antenna Input list box is used to select the desired antenna
type:23www.javad.com
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Operation
Configuring the ReceiverGeneral tab
Note: Note that some receiver models are capable of
automatically detecting an external antenna only atreceiver
start-up time. Therefore, if one wants to switch from the internal
antenna to an external one whilein auto, he/she will have to power
the receiver off and then back on.
int the internal antenna is being used. ext an external antenna
is being used. auto antenna type will detect automatically.
Temperature
The Board temperature indicator shows the receiver boards
current temperature in degrees of Celsius.
Power Management
Five group boxes allow the user to adjust/view the power
settings for your receiver. Each group boxcontains a set of related
controls.
Figure 2-8. Power Management
Battery Charging Mode - enables/disables battery charging mode:
Off receiver will not chargethe batteries. Auto receiver will
automatically charge batteries.
Enable Power Output - enables/disables power output; Low power
mode - turns on/of low power mode; Power Off - turns on/of power;
Sleep Mode - enables/disables sleep mode.
Voltages
Figure 2-9. Voltages24 www.javad.com
The External Power Voltage indicator shows the external power
supply's voltage.
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Operation
Configuring the Receiver
TriPad
The Receiver Board Voltage indicator shows what is the actual
voltage presented on the receiverboard.
The Battery Voltage indicators show the voltage on batteries.
The Charger Output Voltage indicator shows the output voltage of
the internal charger during
battery charging. The Output Voltage indicator displays the
output voltage on the first pin of each of the receivers
serial port.
2.2.2. TriPad
In this tab (Figure 2-10), the user can configure receiver
parameters, which relate to TriPad (user simpleinterface):
Figure 2-10. TriPad tab
File a, File b
In the fields File a, File b can be specified current log-file
name, message output period, etc. Current log-file edit box allows
the user to specify the prefix of the log file, which will be
saved
into receiver memory during survey. In the Output Epochs Counter
box the number of outputted epochs is shown.25www.javad.com
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Operation
Configuring the ReceiverTriPad
In the Implicit Message Output Period edit box the output period
for the implicit messages can bespecified. This parameter specifies
the interval of outputting messages into the log-file when
datalogging is activated with the TriPad or through the AFRM.
Elevation Mask for Measurements Output (the minimum elevation
angle for the satellites whosedata will be put in the receiver
files logged when pressing FN).
Satellites Number Mask for Position computation - Satellites
with elevations lower than this maskwill be excluded from position
computation.
File Name Prefix - this setting specifies what prefix will be
added to the names of the receiver filescreated via MinPad, (i.e.,
by pressing FN). The prefix can be up to 20 characters long.
Default islog.
Enable Implicit Management of Specific - enables/disables the
management of Implicit MessageOutput Period.
Function Key
TriPad Funnybone Action - This drop-down list box is used to
program how the receiver willreact to clicking FN (i.e., keeping
the button depressed for less than one (1) second). In led
blinkmode switch mode, clicking FN will toggle between the TriPads
standard and extendedinformation modes. In occupation mode switch
you click FN to get the receiver to insert into thecorresponding
log file a message indicating that the occupation type has been
changed from staticto kinematic, or vice versa.
Turn Data Recording on at Startup - enables/disables data
recording on at startup, Initial Dynamic Mode - specifies the
starting occupation type descriptor that will be inserted at
the
beginning of each receiver files logged via the TriPad. You
select static and kinematic to specifythat the corresponding log
file will start with a static and kinematic occupation,
respectively.
Appending data to a specific file - If the new receiver data are
to be appended to an existing logfile, enter the desired filename
in the Always append to the file edit box. The setting can be up
totwenty characters long.
Toggle Automatic Rotation Mode - enables/disables Automatic File
Rotation Mode.26 www.javad.com
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Operation
Configuring the Receiver
TriPad
Automatic File Rotation Mode (AFRM) parameters
Figure 2-11. AFRM parameters
Period specifies the time duration of each of the multiple log
files created in AFRM mode. Phase specifies the phase (i.e.,
constant time shift) of the multiple log files created in AFRM
mode. Files (total) specifies how many multiple log files must
be created in AFRM until this mode
automatically turns off. Zero means that an unlimited number of
log files will be created. Files (remain) shows you how many log
files are left for the receiver to create in AFRM. Enable Oldest
Log-file removal if active, the receiver will remove the least
recent files if no free
space is available in the receiver memory to record the current
file.27www.javad.com
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Operation
Configuring the ReceiverPositioning
2.2.3. Positioning
This tab contains various controls and fields that allow the
user to set elevation and PDOP masks, toselect satellites to track,
and to specify what measurements to use in position
computation.
Figure 2-12. Positioning tab
Enable Solutions
Position Computation Mode - this drop-down list box allows
selecting the mode of positioncomputation:
pd -carrier phase differential (RTK) with fixed ambiguities pf -
carrier phase differential (RTK) with float ambiguities cd- code
differential (DGPS) mode wd - wide area code differential mode
(WDGPS) sp - single point positioning mode1
If the Enable Code Differential Position is activated and the
rover receiver is running in RTK Floator RTK Fixed mode and is
unable to obtain an RTK solution at the current epoch, it will
output thecurrent code differential position for the unavailable
RTK solution.28 www.javad.com
1. Also known as absolute positioning, stand-alone positioning
or simply point positioning
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Operation
Configuring the Receiver
Positioning
Note: If the DGPS (Code Differential) checkbox is enabled and a
DGPS solution cannot be obtained, you caninstruct the receiver to
output single-point position for the unavailable differential. For
this, enable theStandalone checkbox.
Note: Code differential mode requires broadcasting the
corresponding DGPS (not RTK) messages from thereference receiver
and accepting them on the rover receiver. If any of these
requirements are not met, thenenabling the DGPS (Code Differential)
checkbox will not have any effect.
Positioning Masks
Figure 2-13. Position Masks
In the Elevation mask edit box, you specify the elevation mask
angle for the satellites used inposition computation. The receiver
will not use the satellites below the specified elevation mask
tocompute the position. The default value is 5 degrees.
In the PDOP mask edit box, you specify the threshold value of
PDOP that disables positioncomputation. If PDOP exceeds this mask
during a period of time, the receiver's position will notbe
computed over the corresponding epochs. The default value is
30.
Positioning Systems
Select the GPS, GLONASS, Galileo, and SBAS checkboxes if it is
desired that the corresponding satelliteconstellations to be used
in position computation.
Note: However, the selected satellite constellation will indeed
be used in position computation only if the correspondingSatellites
used in pos. checkbox from the Satellite management panel is
selected as well.29www.javad.com
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Operation
Configuring the ReceiverPositioning
Satellite Management
Figure 2-14. Satellite Management
GPS | GLONASS | GALILEO | SBAS
Use these tabs to explicitly specify which of the GPS, GLONASS,
Galileo and SBAS satellites areenabled for tracking and position
computation.
The first tab, as its name implies, deals with the GPS
satellites (Figure 2-15).Figure 2-15. GPS tab
The tab displays the following columns, prn, lock and use, which
are described in Table 2-2.Table 2-2. Description of Data Displayed
in the GPS Tab
Use the All to lock and All to use buttons to select all GPS
satellites at one time.Use the None to lock and None to use buttons
to deselect all GPS satellites at one time.
The second tab, as its name implies, deals with the GLONASS
satellites.
Satellite Numbering
For user convenience, GLONASS satellites can be displayed
ordered either by their Frequency ChannelNumber or by the Slot
Number. The tab displays columns, fcn/sat, lock and use, which are
described inTable 2-3.
Notation Meaning
prn GPS satellites pseudo-random noise code numbers.
lock Checkmarks in this column indicate that the corresponding
satellites are enabled for tracking.
use Checkmarks in this column indicate that the corresponding
satellites are enabled for position computation. 30
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Operation
Configuring the Receiver
Positioning
Table 2-3. Description of Data Displayed in the GLONASS Tab
Use the All to lock and All to use buttons to select all GLONASS
satellites at one time.Use the None to lock and None to use buttons
to deselect all GLONASS satellites at one time.
The third tab, as its name implies, deals with the GALILEO
satellites.The tab displays columns, prn/sat, lock and use, which
are described in Table 2-4.
Table 2-4. Description of Data Displayed in the GALILEO Tab
Use the All to lock and All to use buttons to select all GALILEO
satellites at one time.Use the None to lock and None to use buttons
to deselect all GALILEO satellites at one time.
The fourth tab, as its name implies, deals with the WAAS/EGNOS
satellites.A WAAS-enabled JAVAD GNSS receiver allows simultaneous
tracking of two WAAS satellites.Either of the WAAS satellites is
allocated its own channel. Use the All to lock and All to use
buttons to select all SBAS satellites at one time.
Use the None to lock and None to use buttons to deselect all
SBAS satellites at one time.
Notation Meaning
fcn/sat GLONASS satellites frequency channel numbers, if the
Frequency Channel Number checkbox is selected. GLONASS satellites
slot numbers, if the Slot Number checkbox is enabled.
lock Enable GLONASS satellites for tracking.
use Use this GLONASS satellite for position computation.
Notation Meaning
prn GALILEO satellites pseudo-random noise code numbers.
lock Checkmarks in this column indicate that the corresponding
satellites are enabled for tracking.
use Checkmarks in this column indicate that the corresponding
satellites are enabled for position computation.
31www.javad.com
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Operation
Configuring the ReceiverPositioning
Measurements Used
This radio button group shows what code measurements will be
used to compute the receiver's standaloneposition. This parameter
applies only to absolute position computation.
Figure 2-16. Measurements Used
Note: For a single-frequency receiver, the radio buttons P/L1,
P/L2 and Iono-Free will be gray.
If the Iono-Correction checkbox is selected, the receiver will
correct the pseudoranges for ionosphere(based on the model defined
in ICD-GPS-200, Revision C) before using them in position
computation.Note that if both Iono-Free and Iono-Correction are
selected, the first overrides the second. Thisparameter applies
only to absolute position computation.If the Tropo-Correction
checkbox is selected, the pseudoranges will be corrected for
troposphere beforebeing used in position computation. This
parameter applies only to absolute position computation.
RAIM
Figure 2-17. RAIM
RAIM stands for Receiver Autonomous Integrity Monitoring. When
this feature is enabled, the receivercontinuously checks whether
the signals received from satellites are usable or not. If a fault
(measurementoutlier) in satellite data has been detected based on
the current alarm limit, RAIM excludes thissatellite(s) from the
positioning calculations, thereby allowing the receiver to continue
providing correctposition information without an interruption in
the service.
The RAIM Mode if turned on, activates the RAIM algorithm. With
the Alarm setting, the user specifies alarm limit mode. The alarm
limit is a threshold value
for the horizontal radial error. There are three pre-defined
limits and one that is specifiedmanually:
Non-precision stands for Non-precision approach. For this phase
of flight, the alarm limit is equalto 0.3 nmi. This value means
that an error of 0.3 nmi or greater, caused by bad satellite data,
willbe detected by RAIM.
Terminal. For this phase of flight, the alarm limit is 1.0 nmi.
En route. For this phase of flight, the alarm limit is 2.0 nmi.
Manual. This mode allows the user to select alarm limit values
other than the pre-defined ones.32 www.javad.com
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Operation
Configuring the Receiver
Positioning
The Alarm limit for Manual Mode edit box is available only if
one has selected the Manual modefrom the Alarm list box. Values the
user enters in this edit box can vary within the range10.010000.0
meters. The default value is 555.6 and it corresponds to
Non-precision approach.
Datum
Figure 2-18. Datum
From the Current Datum for Position Computation drop-down list
box, you select the datum used inposition computation. Once the
desired datum is selected and the Apply button is pressed, the
receiverbegins producing its position expressed in the selected
datum. The default datum is WGS 84.
Note: Currently JAVAD GNSS receivers support more than 200
datums. For a list of the supported datums, referto the GREIS
Reference Manual.
Note: The receiver position, which is expressed in a datum other
than WGS 84, may be viewed using NMEAmessages such as GGA, GLL and
so on. Position-related JAVAD GNSS messages (for example
[PV])always contain the coordinates computed in WGS
84.33www.javad.com
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Operation
Configuring the ReceiverBase
2.2.4. Base
With the Base tab, the user can configure the receiver for use
as a reference station (Figure 2-19).
Figure 2-19. Base
In the Reference Position area (Figure 2-20) the user enters the
geodetic coordinates of the base antennasphase center.
Figure 2-20. Reference Position area
Lat Antenna latitude in degrees, minutes, and seconds format
with a hemisphere letter (N or S). Lon Antenna longitude in
degrees, minutes, and seconds format with a hemisphere letter (E
or
W).34 www.javad.com
Alt Antenna height above the ellipsoid, in meters.
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Operation
Configuring the Receiver
Base
Note: The reference geodetic coordinates specified in this tab
will relate to the antenna L1 phase center. Toaccount for the
offset between the L1 and L2 antenna phase centers, use the
parameter L1 to L2 AntennaPhase Center offsets.
Note: If the coordinates entered are expressed in a datum other
than WGS 84, which is default, ensure that thecorrect datum ID is
selected.
There are three ways to enter the coordinates:1. Type in the
precise latitude/longitude and ell. height manually (use the Lat,
Lon and Alt edit
boxes).2. Use the absolute coordinates averaged over the
specified time interval (with the Averaged and
Avg.Span controls).3. Use the instant absolute coordinates from
the receiver (by pressing the Get from receiver button).
L1 to L2 Antenna Phase Center offsets
Use these fields if you need to account for the difference
between the L1 and L2 antenna phase offsets.
Figure 2-21. L1 to L2 Antenna Phase Center offsets
RTCM Settings
The Station ID edit box allows the user to assign a separate
station ID to each reference station working inthe area. On the
rover side, this ID allows easy identification of the reference
station whose RTCMmessages are being received by the rover
receiver. This ID must be an integer from 0 (default) to 1023.With
the Max. number of Satellites edit box, the user specifies the
maximum number of satellites allowedfor use in RTCM messages types
18 through 21. A 0 means that all of the available satellites will
beincluded in the above mentioned RTCM message types. If an RTK
system has a slow modem (the baudrate is less than 9600 bps), it is
recommended to restrict the number of satellites included in
thesemessages. The limitation allows the user to reduce the amount
of data sent by the base station, whichhelps to avoid the data link
overload. If the actual number of satellites in sight exceeds the
value enteredin this edit box, the RTCM messages will include data
only from the satellites with higher elevations andthe number of
satellites included in the RTCM messages will not be greater than
that specified in the editbox.The Health list box is intended to
define the reference station status:
Good station is operating normally. Bad station is not working
normally. Unknown station health status is
unknown.35www.javad.com
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Operation
Configuring the ReceiverBase
With the Measurements Sent radio buttons, the user specifies the
measurement types that will be includedinto the RTCM message types
18 through 21. Currently, the mentioned RTCM messages always
containC/A measurements. The user can also include either or both
P/L1 data and P/L2 data in these messages(on condition that the
JAVAD GNSS receiver is configured as a dual-frequency unit).The GPS
and GLONASS checkboxes, which are grouped together within the
System Used area, indicatethe satellite constellations included in
the RTCM message types 18, 19, 20 and 21.If the Pseudo-range
smoothing checkbox is selected, the receiver will use smoothed
pseudoranges in theRTCM message types 19 through 21.
CMR Settings
With the Station ID the user can specify the base station ID,
which will be included into the CMRmessages transmitted by this
base station. On the rover side, this ID allows easy identification
of thereference station whose CMR messages are being received by
the rover receiver. This ID must be aninteger from 0 (default) to
31.The Motion list box characterizes the motion of the reference
station:
Unknown the motion state is undetermined. Static the receiver is
motionless. Kinematic the receiver is in motion.
Use the Short ID, COGO and Long ID to include the reference
station's point feature code1 into CMRmessage type 2.The CA/L1,
P/L1 radio buttons and the P/L2 checkbox, which are grouped within
the Measurements Sentarea, allow the user to specify which
measurement types will be included into the corresponding
CMRmessages broadcasted by the reference station. If the receiver
is a single-frequency unit, the P/L1 and P/L2 controls will not be
available.The GLONASS message spin box allows the user to specify
which message types will be associated withGLONASS measurements.
You can choose any unused message types between 3 and 7.36
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1. Feature code is an alphanumeric code used to describe an
object to be surveyed.
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Operation
Configuring the Receiver
Rover
2.2.5. Rover
In this tab, the user can configure a receiver as a rover
station.
Figure 2-22. Rover tab
DGPS Parameters
Corrections usage Source of DGPS Corrections - serves to specify
the source (port) from which the receiver will use
differential corrections for position computation: Best - If the
Best radio button is selected, the receiver will use differential
corrections that
correspond to the most precise of the obtained position
estimates. Best means that the solutionhas the least RMS error.
Nearest - If this radio button is selected, the rover will use
differential corrections transmitted bythe nearest reference
station.
Any -The rover will use all available differential corrections.
User - If this radio button is selected, the rover will use
differential corrections from the user
defined source In the Maximum age of DGPS Corrections edit box,
the user can set the maximum age (in
seconds) of the code differential corrections used for position
computation. It must be an integervalue between 1 and 1200. The
default is 30. If the age of the corrections exceeds the
value37www.javad.com
specified in this edit box, the rover will compute a stand-alone
position.
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Operation
Configuring the ReceiverRover
Use the Maximum age of Iono Corrections edit box to specify the
maximum age (in seconds) ofthe ionosphere corrections used for
position computation.If you set the Ionosphere-free DGPS
Corrections checkbox to on, the rover receiver will use inposition
computation both the ionosphere corrections from RTCM message type
15 and differen-tial corrections from RTCM message types 1 and 31
(or 9 and 34).
RTK Parameters
The RTK position Computation Mode drop-down list box serves to
toggle between the extrapolation anddelay modes. If Extrapolation
is selected, the rover will extrapolate the base station's carrier
phasemeasurements when computing the rover's current RTK position.
If Delay is selected, the rover will notextrapolate the base
station's carrier phase measurements to compute the current rover
position. Instead,the RTK engine will compute either a delayed RTK
position (for the epoch to which the newly receivedRTCM/CMR message
corresponds) or the current stand-alone position (while waiting for
new RTCM/CMR messages coming from the base).
Figure 2-23. RTK Parameters
The Confidence Level for Ambiguity Fixing list box governs the
process of the RTK engine fixing integerambiguities. The RTK engine
uses the ambiguity fix indicator when making a decision whether to
fixambiguities or not. Low, Medium and High correspond to the
indicator's 95%, 99.5% and 99.9% states,respectively. The higher
the specified confidence level, the longer the integer ambiguity
search time. Thisis the price one pays for the higher reliability
of the ambiguity fixed solution.The Use Measurements for RTK list
boxes allow the user to select measurement types used by the
roverfor position computation.In the Update Interval od RTK
Preference list box the user can set the differential correction
updateinterval. It should be noted here that for a proper rover
setup in RTK Delay mode the user should knowthe exact rate at which
the reference station broadcasts its differential correction
data.
Note: The receiver will use the Base Corrections period control
only if it runs in Delay mode. Also, this edit boxis used to
provide more reliable synchronization between the base station and
rover.38 www.javad.com
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Operation
Configuring the Receiver
Rover
RTK Heading Parameters
This field is used for setting up the heading parameters.The
Heading Mode drop-down list box serves to toggle between the
extrapolation and delay modes. IfExtrapolation is selected, the
rover will extrapolate the base station's carrier phase
measurements whencomputing the rover's current RTK position. If
Delay is selected, the rover will not extrapolate the basestation's
carrier phase measurements to compute the current rover
position.
Figure 2-24. RTK Heading Parameters
The Use Fixed Baseline Length drop-down list box to toggle
between the sets of carrier phase differentialdata received from
the reference station:
last RTK engine will process the last set of carrier phase
differential data received from thereference station.
every RTK engine will attempt to process all sets of carrier
phase differential data sequentiallyreceived from the reference
station.
Attitude Parameters
This field is used for setting up the attitude parameters: mode,
pitch, roll, heading offset, etc.
Figure 2-25. Attitude Parameters39www.javad.com
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Operation
Configuring the ReceiverPorts
2.2.6. Ports
The Ports tab, as shown in Figure 2-26, comprises different
sections that are reached via the subtabs:
Figure 2-26. Ports tab
Serial Used to specify the data the receiver serial ports will
transmit/receive. See Serial onpage 40.
USB Used to specify the data the receiver USB port will
transmit/receive. See USB on page42.
Bluetooth - Used to specify the data the receiver Bluetooth port
will transmit/receive. SeeBluetooth on page 42.
TCP Used to specify the data the receiver will transmit/receive
over TCP/IP network. SeeTCP on page 42.
CAN Used to specify the parameters of the CAN port(s). See CAN
on page 43.
Serial
Use this subtab to adjust the settings for serial ports A, B, C
and D (Figure 2-26). The Input Mode list box allows the user to
specify what type of data to input on the selected port.
cmd- command mode. Being in this mode, the receiver's port
recognizes GREIS commands sentby the user.
echo - echo mode. jps- GREIS input mode. In this mode receiver
is capable to recognize both standard and non-
standard GREIS messages. rtcm - RTCM 2.x input mode. rtcm3 -
RTCM 3.x input mode. In this mode the receiver recognizes and
decodes the RTCM 3.x
messages received through the corresponding port.40
www.javad.com
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Operation
Configuring the Receiver
Ports
cmr - CMR/CMR+ input mode. For more information on CMR format,
please refer to ftp://ftp.trimble.com/pub/survey/cmr.
omni - unsupported. none - means that the port will ignore any
incoming data. dtp - the port is currently attached to the Data
Transfer Protocol (DTP), so all the input goes there.
This mode could be set only by the get GREIS command. The mode
will return to cmd as soon asDTP terminates.
term - the PPP data link is currently established over this
port, so all the input goes there. Thismode could be set only
implicitly by the PPP stack. When parameter is implicitly set to
this mode,attempts to change the mode will fail.
The Output list box allows the user to specify what type of data
to output on the selected port. None The port outputs nothing. DGPS
RTCM {1,31,3} The port outputs RTCM message types 1, 31,3. DGPS
RTCM {9,34,3} The port outputs RTCM message types 9, 34, and 3. RTK
RTCM {18,19,22,3} The port outputs RTCM message types 18, 19, 22,
and 3. RTK RTCM {20,21,22,3} The port outputs RTCM message types
20, 21, 22, and 3. RTK RTCM {20,21,22,23,24} The port outputs RTCM
message types 20, 21,22, 23, 24. RTK RTCM3 GD min The port outputs
RTCM 3.0 message types GD min. RTK RTCM3 GD full The port outputs
RTCM 3.0 message types GD full. RTK RTCM3 GGD min The port outputs
RTCM 3.0 message types GGD min. RTK RTCM3 GGD full The port outputs
RTCM 3.0 message types GGD full. RTK CMR {10,0,1} The port outputs
CMR message types 10, 0, 1. RTK CMR+ {10,0,9} The port outputs CMR+
message types 10, 0, 9. RTK JPS min The port outputs JPS messages.
RTK JPS max The port outputs JPS messages. User Defined The port
outputs data specified by the user. It means that the user defined
an
arbitrary message set that will be outputted through the port.In
the Period edit box, the user sets the message output interval (in
seconds).
Note: It is worth noting, however, that the period of RTCM
messages types 22, 3 and CMR message type 1cannot be changed with
this edit box. The default period for the mentioned messages is 10
seconds. If theuser wants to change the period, he/she should use
the em command from the Manual Mode window. Formore details on em
refer to the GREIS Reference Manual.
To set the baud rate for the corresponding receiver port, use
the Baud rate list box.The checkbox RTS/CTS enables/disables
hardware handshaking for the port.41www.javad.com
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Operation
Configuring the ReceiverPorts
USB
This subtab contains settings that allow the user to specify
what type of data to input/output on the USBport (Figure 2-27).
These settings are the same as those in the Serial subtab.
Figure 2-27. USB tab
Bluetooth
This subtab contains settings that allow the user to specify
what type of data to input/output on theBluetooth port (Figure
2-28). These settings are the same as those in the Serial subtab.
For moreinformation, refer to Serial on page 40.
Figure 2-28. Bluetooth tab
Additionally here can be checked and/or specified hardware
settings such as Bluetooth FCC ID, IC,Bluetooth mode (on/off),
Bluetooth name, and PIN code.
TCP
Note: The settings on this subtab are only available if a
connected receiver has the Ethernet capability.42 www.javad.com
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Operation
Configuring the Receiver
Ports
With this subtab, the user specifies what type of data to
input/output over the corresponding TCP/IPstream (Figure 2-29).
These settings are the same as those in the Serial subtab. For more
information,refer to Serial on page 40.
Figure 2-29. TCP tab
CAN
Note: The settings on this subtab are only available if a
connected receiver has the CAN port(s).With this subtab, the user
specifies what type of data to input over the corresponding CAN
port (Figure 2-30). These settings are the same as those in the
Serial subtab. For more information, refer to Serial onpage 40.
Figure 2-30. CAN tab43www.javad.com
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Operation
Configuring the ReceiverNetworking Tab
2.2.7. Networking Tab
This tab is used to review and configure the networking
parameters.
Figure 2-31. Networking
LAN
A local area network (LAN) supplies networking capability to a
group of computers in close proximity toeach other. A LAN is useful
for sharing resources like files, printers, games or other
applications. This taballows the user ti set up the LAN parameters
(Figure 2-31): Receiver IP address, gateway, network mask,MAC
Address, etc.
Note: Contact your system administrator to obtain these
values.
WLAN
A wireless local area network (WLAN) links two or more devices
using some wireless distributionmethod (typically spread-spectrum
or OFDM radio), and usually providing a connection through anaccess
point to the wider internet. This gives users the mobility to move
around within a local coveragearea and still be connected to the
network.44 www.javad.com
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Operation
Configuring the Receiver
Networking Tab
This tab allows the user ti set up the LAN parameters (Figure
2-32):
Figure 2-32. WLAN
Note: Contact your system administrator to obtain these
values.
Server
This tab allows the user ti set up the parameters for remote
receiver control via TCP/FTP connection.
Figure 2-33. Server subtab
Client
The Transmission Control Protocol (TCP) is one of the core
protocols of the Internet Protocol Suite. TCPis one of the two
original components of the suite, complementing the Internet
Protocol (IP), andtherefore the entire suite is commonly referred
to as TCP/IP.45www.javad.com
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Operation
Configuring the ReceiverNetworking Tab
TCP client mode can be configured using this subtab.
Figure 2-34. Client subtab
TCP Client Mode - allows the user selecting any of the following
mode: NTRIP, RCV, etc.; TCP Client connection State - shows the
connection status; Timeout - shows TCP connection timeout; Error -
TCP error messages.
PPP
This subtab allows user to set up the Point-to-Point protocol
parameters:
Figure 2-35. PPP subtab
The Point-to-Point Protocol, or PPP, is commonly used to
establish a direct connection between twonodes.
Note: Information of PPP parameters is given by Internet service
provider.46 www.javad.com
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Operation
Configuring the Receiver
Networking Tab
GPRS
This tab allows user to setup all necessary GPRS settings:
Figure 2-36. GPRS subtab
It is necessary to set the dial number, user name and password,
access point name and PDP contextidentifier to establish a GPRS
connection.
Note: This information is given by cell provider.
AT details area is designed for advanced users for finest GPRS
tuning. By default, all the settings have thezero value.
Note: We recommend that you do not send any AT commands to the
GSM modem before acquire goodknowledge of the GPRS
parameters.47www.javad.com
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Operation
Configuring the ReceiverNetworking Tab
GSM
This subtab is used to review and configure the GSM module
parameters:
Figure 2-37. GSM subtab
Mode drop-down list box allows user to select and setup the GSM
modem mode: OFF means GSM modem is inactive. To change modems modes
user has to set modems mode
firstly to OFF and press Apply button, then select and setup the
necessary mode from the list. OFFmode means modems hardware
reset.
Slave means registered in GSM network modem is waiting an
incoming call to send a data. TheSlave mode is required modem mode
for the receiver configured as a base.
Master means registered in GSM network modem is dialing up and
establishing connection withother modem, using dial number. If the
established connection is interrupted, modem dial up andconnect
anew. The Master mode is required mode for the receiver configured
as a rover.
PIN Code box allows the user to enter the Personal
Identification Number (PIN) of its SIM-card.The Dial number edit
box allows the user to set/display a dial number, the phone number
of the slavemodem to be dialed in to. The number you can insert is
a string comprising up to 14 a/n characters.
Note: Mandatory only when running the GSM modem in master
mode.
The Send Time Out edit box allows the user to set/display a time
interval of the service word. The transmitmodem will send the
service word to the receive modem in every N seconds, where N is a
time interval inseconds from 0 to 255. 0 stands for disabled.
Note: If the receiver has not received any data from the modem
for designated seconds, the modem will bedisconnected and then
re-initialized.
In the Service Word Repeat Period edit box is possible to
set/display a time interval of the service word.The receive modem
will receive the service word from transmit modem in every N
seconds, where N is atime interval in seconds from 0 to 255. 0
stands for disabled. 48 www.javad.com
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Operation
Configuring the Receiver
Networking Tab
Note: To ensure reliable and secure modem communication, the
Receive Time Out value must be always largerthen the period of
transmitting differential corrections. Also, care should be taken
that the time interval inReceive Time Out box is greater than the
service word repeat period by 2 to 3 seconds.
UHF
This subtab is used to review and configure the UHF modem
parameters (Figure 2-38):
Figure 2-38. UHF subtab
Modem Mode - Turns on/off UHF modem; UHF Modem Frequency - the
user can set the necessary frequency; UHF Protocol Type - allows
selecting protocol type:
Simplex Receiver - This mode is used for JAVAD GNSS
internal/external modem on rover sidewhen the base receiver is
equipped with JAVAD GNSS internal/external modem.
Simplex Transmitter - This mode is used for JAVAD GNSS
internal/external modem on base sidewhen the rover receiver is
equipped with JAVAD GNSS internal/external modem.
Simplex Transmitter to Repeater - means the modem is enabled for
transmission data from thebase receiver equipped with JAVAD GNSS
internal/external modem to the Repeater.
Simplex Repeater - JAVAD GNSS internal/external modem enabled as
repeater, with no databeing passed to the local communications
port.
TRMB Receiver (only GMSK) - This mode is used for JAVAD GNSS
internal/external modem onrover side when the base receiver is
equipped with Trimble internal/external modem.
TRMB Transmitter (only GMSK) - This mode is used for JAVAD GNSS
internal/external modemon base side when the rover receiver is
equipped with Trimble internal/external modem.
Transparent w/EOT Receiver (only GMSK) - This mode is used for
JAVAD GNSS internal/external modem on rover side when the base
receiver is equipped with Pacific Crest PDL modem.
Transparent w/EOT Transmitter (only GMSK) - This mode is used
for JAVAD GNSS internal/external modem on base side when the rover
is equipped with Pacific Crest PDL modem.
STL Receiver (only 4FSK) - This mode is used for JAVAD GNSS
internal/external modem onbase side when the rover receiver is
equipped with Satel modem (model SATELLINE-3AS).
STL Transmitter (only 4FSK) - This mode is used for JAVAD GNSS
internal/external modem on49www.javad.com
rover side when the base receiver is equipped with Satel modem
(model SATELLINE-3AS).
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Operation
Configuring the ReceiverNetworking Tab
UHF Modem Output power - This edit box allows the user to
set/query the output power valuefrom 0.03W to 1W.
Forward Error corrections - allows the receiving modem to
correct burst and single bit errors in theincoming data stream.
When enabled, an additional 4 bits per byte of data is transferred
over the RF link.This effectively reduces the data throughput in
proportion to the overhead bytes. Leave FEC enabledunless the data
throughput requirements make the overhead unacceptable.Scrambling -
Enable or disable data scrambling. Select the Scrambling check box
if you want data to bescrambled. Otherwise, keep it clear. For
optimal operation of the GMSK modulation, data should bescrambled.
When enabled, the radio modem scrambles and unscrambles the data on
transmission orreception via an exclusive-OR operation with a
pseudo-random bit stream. Do not disable scramblingunless the DTE
performs data scrambling and produces a data stream with
approximately the samenumber of 1's and 0's. Use the Apply button
to accept the changes you have made in the tab.
FH
This subtab is used to review and configure the FH modem
parameters:
Figure 2-39. FH subtab50 www.javad.com
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Operation
Configuring the Receiver
Event Tab
2.2.8. Event Tab
This tab is used to review and configure the 1PPS signal and
Event marker settings.
Figure 2-40. Event tab
The Enable PPS Generation list boxes (for PPS a and PPS b)
enable the receiver to generate 1PPS signalsand also allows the
user to modify the settings related to the selected 1PPS signal.The
PPS Reference Time list box allows the user to select the reference
time that the 1PPS signal will besynchronized with. There are four
available reference time scales:
GPS means GPS system time. GLO means GLONASS system time. UTCus
means UTC(USNO). UTCsu means UTC(SU).
If the user has selected the Tie PPS to its Reference Time, the
receiver will synchronize the 1PPS signalwith the chosen reference
time. Otherwise, 1PPS will be synchronized either with the
receiver's internalclock or with an external reference frequency
applied to the receiver.The PPS Period edit box determines the rate
of generating the 1PPS signals via the corresponding
outputconnector.
The user can determine millisecond and nanosecond parts of PPS
signal offsets with respect to theselected reference time grid
using the Milliseconds of PPS Offset list box for millisecond part
andNanoseconds of PPS Offset for nanosecond part.With the Period of
Marked PPS Pulses edit box, the user specifies the period of the
marked 1PPS signal.Using the Length of Marked PPS Pulses the user
synchronizes the edge (rising or falling) of the
1PPS51www.javad.com
signal with the specified reference time.
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Operation
Configuring the ReceiverAdvanced
In order to enable or adjust the event input function, use the
controls described below.In the Synchronize Receiver Clock with...
list box, the user specifies that the receiver executes a
one-timesynchronization of its one-millisecond cycle grid with the
corresponding edge of the event signal.The Status of Receiver Clock
indicator shows whether the receiver clock is actually being
synchronizedwith the event signals or not. If you see on in the
field, it means the synchronization has been donesuccessfully.The
Rise and Fall values of Event Reference Edge serve to measure the
time of either the rising edge orfalling edge of the input event
signal.
2.2.9. AdvancedWarning: Only change these advanced settings when
it is known what they mean. Unsuitable changes to these subtabs
can cause the receiver to run improperly. If you are doubtful of
any changes you made to these subtabs, clickthe Set all parameters
to defaults button to get the factory default settings back. For a
description of thesesubtabs, refer to the corresponding paragraphs
below.
Figure 2-41. Advanced tab52 www.javad.com
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Operation
Configuring the Receiver
Advanced
Anti-Interference
With the Anti-Interference radio button group (Figure 2-42), the
user enables mode allowing the JAVADGNSS receivers to suppress the
impact of narrow-band interferences.
Figure 2-42. Anti-Interference subtab
The user can assess the presence of interference based on the
following information: When the number of tracked satellites is
fewer (by 2 or greater) than the number of satellites in
view. When the signal-to-noise ratio (C/N0) in the C/A channel
for the satellites having elevations
above 30 degrees does not exceed 40 dB/Hz. When the information
about interferences indicates that Jamming Suppressor detected
interference signals within the specified band and also the
strength of aggregate in-bandinterference is characterized as high
or hard. This information you can obtain with the
commandem,,jps/JI.
Multipath Reduction
The list boxes CA/L1 Carrier Phase Multipath Reduction and CA/L1
Carrier Multipath Reduction areused for mitigation of the multipath
phenomenon (Figure 2-43).
Figure 2-43. Multipath Reduction subtab
When the reference station and rover station run in DGPS mode
and they are not free from the impact ofmultipath, we recommend
that you select the Code multipath reduction checkbox for both the
referenceand rover stations.
Note: If you use a pair of receivers in RTK mode, you can
additionally select the checkbox Carrier
multipath53www.javad.com
reduction for both receivers.
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Operation
Configuring the ReceiverAdvanced
Loop Management
In this subtab the user can configure the settings that deal
with the receiver capability of searching,acquiring and tracking
the GPS+ satellite signals (Figure 2-44).Warning: Care should be
taken when changing the settings for this subtab. JAVAD GNSS
recommends that users do not
change these settings without good reason.
Figure 2-44. Loop Management subtab
The CA/L1 CLL Bandwidth edit box governs the noise bandwidth of
the guiding phase lock loops. In thisbox, you can enter values
between 2 and 50 Hz.With the CA/L1 CCL Order edit box, the user can
toggle guiding and common lock loop order between 2and 3. Care
should be taken when using a 2nd order PLL because this can
adversely affect satellite signaltracking in some cases.The Strong
Loops CCL Bandwidth edit box governs all of the guided loops but
the C/A DLLs. Here theuser can enter values between 0.1 Hz and 10
Hz.The C/A code guided loop bandwidth edit box specifies the
bandwidth of the receiver's C/A group delaylock loop. In this box,
one can enter the values between 0.1 Hz and 50 Hz.With the Enable
Adaptive Guided Loops checkbox, the user enables/disables the use
of adaptive guidedloops. If the user selects the checkbox, the
receiver will adjust the guided loops bandwidths depending onthe
actual strengths of the signals tracked. The weaker the signals,
the narrower the bandwidths.With the Enable P/L1 and P/L2 tracking
checkbox the user can adjust tracking settings for the receiver.
Ifone has either a single-frequency receiver or L1 only antenna, it
is recommended to disable tracking ofthe P/L1 and P/L2 signals.
Note: Enable the Static Mode parameter only if the receiver
antenna is completely stationary. If your receiverantenna may have
some movement, even for a few millimeters, disable the Static Mode
parameter.Moving the antenna while in Static Mode may result in a
loss of lock to satellites.
The Bandwidth of individual PLL and Bandwidth of common PLL edit
boxes mean exactly what their54 www.javad.com
names imply.
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Operation
Configuring the Receiver
Advanced
Select the Enable L2 common loop checkbox to avoid the loss of
L2 phase tracking in dynamicapplications due to antenna rotation
around its axis.
External Frequency
The settings on this subtab, allow the operator to configure the
use of reference frequency (Figure 2-45).It may be either a
high-stability external frequency or the receivers internal crystal
oscillator.
Figure 2-45. External Frequency tab
With the controls in the group, the user specifies the reference
frequency input that the receiver will use: Internal means the
receiver uses the internal oscillator. External means the receiver
uses an external frequency.
Note: By switching from Internal to External and vice versa may
result in a temporary loss of lock to satellites.
External Frequency Source ParametersWith the Ext. frequency
value edit box the user specifies nominal external frequency value.
Here the usercan enter the integer values between 2 and 40 MHz. The
default value is 10 MHz.The Ext. frequency source status field
shows whether the external frequency is being used or not:
off Indicates that the receiver is using the internal crystal
oscillator. wait Indicates that the receiver is waiting for the
external frequency lock. More precisely, this
value will be returned in the following three cases:If the
external frequency oscillator is disconnectedIf the amplitude of
input signal is too lowIf the actual external frequency is
different from that specified in the Ext. frequency value
editbox
locked Indicates that the receiver is using the external
frequency.With the Ext. freq. signal amplitude field the user can
estimate the external frequency signal
amplitude:55www.javad.com
off Indicates that the internal oscillator is actually being
used.
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Operation
Configuring the ReceiverAdvanced
low Indicates that the external frequency signal's amplitude is
lower than needed. ok Indicates that the external frequency
signal's amplitude meets the specs.
The Oscillator Offset Reduction group box allows the user to
govern the behavior of the internal crystaloscillator.
The Off radio button means that the oscillator frequency offset
reduction mode is turned off. The Freq. Locked radio button means
that the receiver will adjust the internal oscillator's
frequency until the measured frequency offset is reduced to
zero. By using the incoming satellitesignals, the receiver will
force the internal oscillator to generate a very stable 20 MHz
frequencysignal. This frequency output is available via the
corresponding receiver output pin.
Note: The user is able to monitor the offset reduction in the
Clock offset field of the GEO tab. After selectingFreq. Locked the
value in Clock offset starts to reduce and soon (usually in a few
minutes) it will becomeequal to zero, while in contrast Osc. Offset
will not change much.
The Freq. and Time Locked radio button means that the receiver
will adjust both the internal oscillator'sfrequency until the
measured frequency offset is reduced to zero and the internal clock
until it gets fullysynchronized with the specified reference time
scale.
Note: Switching from Freq. Locked or Freq. and Time Locked to
Off may result in a temporary loss of lock tosatellites.
Freq. Locked guarantees that the receiver's 20 MHz output will
have long-term stability, not necessarilyshort-term stability.
However, there is a way to assure that both of these
characteristics will be goodenough. It can be done by selecting
Enable Common tracking on the Loops Management subtab.
Raw Data Management
This subtab, which is shown in Figure 2-46, contains the
controls for specifying the frequency at whichthe receiver will
update raw measurement and position. Also, the user may set up the
controls that affectthe signal processing.
Figure 2-46. Raw Data Management tab56 www.javad.com
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Operation
Configuring the Receiver
Advanced
The Measurements Update Rate group allows the user to determine
the raw data update period. In theUpdate Rate edit box, enter a
value (in milliseconds) to specify the period. With Effective
MeasurementsUpdate Rate, the user can check which period is
actually being used by the receiver.The Position Update Rate group
allows the user to determine the receive position update period. In
theUpdate Rate edit box, enter a value (in milliseconds) to specify
the period. With Effective PositionUpdate Rate, the user can check
which period is actually being used by the receiver.The Pseudorange
Smoothing interval edit box specifies the interval over which
pseudoranges aresmoothed by using corresponding carrier phase
measurements. Here you can enter values between 0 and900 seconds.
Zero designates that carrier phase measurements will not be used
for smoothing pseudo-ranges.With Ionosphere Correction Smoothing
Interval edit box, the user specifies the nominal
ionosphericcorrection smoothing interval over which raw ionospheric
corrections are smoothed (assuming thereceiver has been working for
some time and has already obtained enough raw ionospheric
corrections toperform such smoothing). This integer parameter
varies between 0900 seconds. The default value is60.With the
Minimum Iono Smoothing Interval edit box, the user specifies the
minimum smoothing intervalfor the receiver to filter raw
ionospheric corrections before they can be used in position
computation. Thisinteger parameter ranges between 0 and 900
seconds. The default value is 30 seconds.In the Doppler Smoothing
Bandwidth edit box, the user sets the method used for smoothing
Doppler.There are three available methods:
Receiver outputs raw (unsmoothed) Doppler. Instantaneous yet
rather noisy Dopplermeasurements.
Doppler is computed using two consecutive carrier phase
measurements, CarPhase[i] andCarPhase[i-1], where i stands for the
current epoch. Such Doppler measurements are less noisythan in the
first case.
Doppler is computed using three consecutive carrier phase
measurements,