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1 Technical Search Specialist Course Module 5 Unit 2: Global Positioning System (GPS)

Mar 30, 2015



  • Slide 1

1 Technical Search Specialist Course Module 5 Unit 2: Global Positioning System (GPS) Slide 2 2 Terminal Objective Upon completion of this unit, you will be able to Operate the Garmin GPSMAP 60 Csx Slide 3 3 Enabling Objectives Describe the basic segments and principles of the global positioning satellite (GPS) system Explain waypoints Identify and describe the errors, concerns and considerations related to GPS Demonstrate the use of the Garmin GPSMAP 60 Csx Slide 4 4 II. Introduction to GPS Slide 5 5 The Global Positioning System (GPS) A worldwide radio navigation system A constellation of 24 orbital satellites Funded by DoD Originally made for military to launch submarine based missiles more accurately Slide 6 6 Four Primary Functions of GPS GPS provides: Position and coordinates The distance and direction between any two waypoints, or a position and a waypoint Travel progress reports Accurate time measurement Slide 7 7 So why do you need GPS? During a mission you Need to know where you are Need to know where are you going Need to find your way back Slide 8 8 GPS Segments Satellite segment Control segment User segment Slide 9 9 Control Segment Space Segment User Segment Monitor Stations Ground Antennas Master Station Satellite Segment Slide 10 10 GPS Monitor Stations Hawaii Ascension Island Diego Garcia Kwajalein Colorado Springs Slide 11 Kwajalein Atoll US Space Command Hawaii Ascension Island Diego Garcia Cape Canaveral Ground AntennaMaster Control StationMonitor Station GPS Monitor Stations Slide 12 12 User Segment Military Civilian Slide 13 13 III. GPS Cautions and Considerations Slide 14 14 Cautions/Considerations Satellite geometry Overhead view clear Tall buildings Satellite dishes Microwaves Heavy trees/environmental Multipath Atmospheric effects Slide 15 15 Errors Using GPS Problems at the satellite Atomic clocks Ephemeris errors Intentional Errors "Selective Availability" Military receivers use a decryption key to remove the SA errors Slide 16 16 Errors Using GPS (continued) On May 1, 2000 Selective Availability was turned off However,can be turned on at any time by government Slide 17 17 Gotchas Using GPS Common Map Datums GPS Almanac Updates Control segment orbital corrections need to be downloaded Moving the GPS while turned off If moved more than 300 miles need to either Re-Initialize Allow unit time to self-update (can take up to 20 minutes) Slide 18 18 Gotchas Using GPS (continued) Parallel versus Single Channel Receivers Single Channel receive data one satellite at a time Loss of satellite signal - unit must re-acquire satellite lock Parallel Channel receivers can receive from multiple satellites simultaneously Loss of signal from any one or two satellites will not cause a loss of satellite lock Slide 19 19 Gotchas Using GPS (continued) Not allowing enough time for triangulation No standard unit for US&R teams Slide 20 20 Conclusions Remember GPS is not a compass GPS tells you the direction you are moving Carry extra batteries Water resistant is better Antenna considerations Slide 21 21 Understand GPS unit controls. Describe GPS unit pages. Clear out track logs, routes, & waypoints. Set up a GPS unit. Make a track log, create waypoints, & project waypoints. Navigate to waypoints, addresses, & points of interest using the Find function. Use the Track Back feature. Create a route. Enabling Objectives Slide 22 22 GPSV60C60Cx/60CSxRino 530 Waypoints 500 10 Proximity 10 Closest 1,000 10 Proximity 10 Closest 1,000 10 Proximity 10 Closest 500 Track 2000 10 Saved 10,000 20 Saved / 250 Each 10,000 20 Saved / 500 Each 10,000 20 Saved / 250 Each Routes 20 50 pts each 50 250 pts each 50 250 pts each 50 250 pts each Acquisition Times Warm: 15 s Cold: 45 s Locate: 5 m Warm: 15 s Cold: 45 s Locate: 5 m Warm: 1 s Cold: 38 s Locate: 45 s Warm: 15 s Cold: 45 s Locate: 5 m Memory 19MB FIXED 56MB FIXED 64MB EXPANDABLE 56MB FIXED Garmin GPSMAP 60Cx Features Slide 23 23 The GPSMAP Key Layout POWER Key IN/OUT Zoom Keys FIND/MOB Key MARK Key QUIT Key ROCKER Key PAGE/COMPASS Key MENU Key ENTR Key Slide 24 24 Two AA batteries, USB cable, 12v DC adapter Battery Life: 18 hours Alkaline batteries lose capacity in low temps Lithium batteries in below freezing temperatures Extensive use of backlighting, electronic compass, and audible tones significantly reduce battery life Memory Card Location Battery Compartment Power Considerations Slide 25 25 Power On the GPS Press and hold the Power key Title screen appears Satellite status page Title ScreenSatellite Status Slide 26 26 Satellite Status Page Horizon 45 from the horizon Heading bug travel direction Satellite signal strength Searching / Acquiring 2D Fix (3 Satellites) 3D Fix (4+ Satellites) Slide 27 27 Main Pages Cycle through pages using PAGE or QUIT SatelliteTripMapCompassAltimeter (CSx Model) Main Menu Slide 28 28 Main Menu Press MENU button twice for Main Menu 2 X Slide 29 29 Main Menu GPSmap 60CSGPSmap 60CSx Searching / Acquiring 2D Fix (3 Satellites) 3D Fix (4+ Satellites) Battery Power / Level Auxiliary Power Backlight Usage USB Cable Connection Electronic Compass On Slide 30 30 Adjusting Screen Settings To minimize battery drain, limit or turn off backlight: Press and quickly release the POWER button Press up on ROCKER to increase, down to decrease Press ENTER or QUIT to close Backlight adjustment window Slide 31 31 System Setup Pages Slide 32 32 System Setup Page Press MENU twice for Main Menu, select SETUP and press ENTER Important Setup Pages: System Display Time Units Heading Calibration Slide 33 33 SETUP: System GPS Normal - for everyday use Demo - for indoor training WAAS Enabled Battery Type Alkaline NiMH Proximity Alarms On Slide 34 34 SETUP: Display Display Mode Auto Switch between Day and Night modes at sunrise and sunset. Backlight Timeout On continuous or timed. Setting ignored if external power is used. Backlight Level Backlight setting will increase or decrease battery life Slide 35 35 SETUP: Time Time Format Set to 24 hour format Time Zone Time zone for the area of operations UTC Offset Changes with Time Zone Daylight Savings Time Set to Auto Slide 36 36 SETUP: Units Position Format USNG United States National Grid (DHS Standard) MGRS Military Grid Reference System hdddmm.mmm Map Datum WGS 84 NAD27 CONUS USGS Maps Slide 37 37 SETUP: Heading North Reference Specifies the type or north reference used to calculate your heading Set to True Slide 38 38 Tracks Slide 39 39 Track Log Creates an electronic breadcrumb trail or track log while you travel Each point in the track contains information on time, location, elevation and depth Slide 40 40 Track Log To Access Track Logs: MENU button twice for the Main Menu screen Select TRACKS and press Enter Slide 41 41 Track Log On/Off toggle Percentage of memory used List of saved Tracks Remaining available logs Slide 42 42 Track Log : Clearing To clear the track log: Highlight Clear and press Enter Confirmation message appears Press Yes Slide 43 43 Track Log : Set Up To set up a track log: Highlight Setup and press Enter to open the Track Log Set Up Page Data Card Option Slide 44 44 Track Log : TracBack To use the TracBack feature: With Saved Tracks Page for the track or the Track Log open, highlight TracBack and press Enter Once the map is displayed, use the Rocker to move the pointer to a point on the map and press Enter Select Follow Road or Follow Track Follow the direction arrow To exit, press Menu then Stop Navigation Slide 45 45 Waypoints Slide 46 46 Waypoints Waypoints are locations you record and store in your GPS Waypoints created in 3 ways: Press the MARK key while at a location Create a waypoint on the map page Enter the coordinates for a waypoint manually Slide 47 47 Waypoints: Circle of Error X Slide 48 48 Waypoints: Available Map Symbols GPSmap 60C Display Slide 49 49 Waypoints: Common Abbreviations PX- Picture (note direction of photo) HAZ- Hazards H-1- Helispot 1 Hosp- Hospital Str- Structure Sz- Safety Zone POA- Point of Arrival POD- Point of Departure BoO- Base of Operations Fwd BOO- Forward Base of operations Stg- Staging Utl- Utilities Apt- Apartment Air- Airport Slide 50 50 Waypoints: Mark Current Location To mark your current location: Press and hold the MARK key until the Mark Waypoint page appears To accept the waypoint with the default information highlight OK and press Enter Icon Waypoint Name Coordinate Notes Slide 51 51 Waypoints: Using The Map Page To mark a location on the map page: On the map page, use the Rocker to move the arrow to the location to mark as a waypoint Press and quickly release the Enter key to capture the location and open the information page Highlight OK and press Enter to save Map Pointer Mode Original Location New Location Slide 52 52 Waypoints: Entering Coordinates To mark a location with known coordinates: Press and hold the MARK key until the Mark Waypoint page appears Use the ROCKER to highlight the Location field. Edit the coordinate with your known coordinate. Highlight OK and press Enter to save On-screen Keypad Edit The Coordinate Change Letters Navigate Left / Right Slide 53 53 Waypoints: Entering Coordinates Enter the following known coordinate: 14S QB 12076 29862 Label waypoint as: HAZARD On-screen Keypad Edit The Coordinate Change Letters Navigate Left / Right Slide 54 54 Useful for creating no-go zones for personnel HAZMAT Bio-Chem Areas Safety Officer Designated Areas Proximity waypoints are also supported with the beep alarm Waypoints: Proximity Alarm Slide 55 55 Waypoints: Proximity Alarm To define an alarm circle around a waypoint: From the Main Menu select Proximity, press Enter Highlight an empty line and press Enter Select a waypoint from the list and Enter Highlight Use and press Enter Use the Rocker to adjust the proximity radius Turn Alarm On / Off Empty Line Proximity Radius Slide 56 56 Waypoints: Proximity Alarm Create a Proxim