EUROPEAN ORGANISATION FOR THE SAFETY OF AIR NAVIGATION E U R O C O N T R O L EUROPEAN AIR TRAFFIC MANAGEMENT PROGRAMME EUROCONTROL STANDARD DOCUMENT FOR SURVEILLANCE DATA EXCHANGE Part 13 Transmission of TIS-B Management Messages SUR.ET1.ST05.2000-STD-13-01 Edition : 0.10 Edition Date : September 2001 Status : Working Draft Class : General Public
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EUROPEAN ORGANISATION FOR THE SAFETY OFAIR NAVIGATION
EUROCONTROL
EUROPEAN AIR TRAFFIC MANAGEMENT PROGRAMME
EUROCONTROL STANDARD DOCUMENT
FOR
SURVEILLANCE DATA EXCHANGE
Part 13
Transmission of TIS-B ManagementMessages
SUR.ET1.ST05.2000-STD-13-01
Edition : 0.10Edition Date : September 2001Status : Working DraftClass : General Public
DOCUMENT IDENTIFICATION SHEET
DOCUMENT DESCRIPTION
Document Title
Surveillance Data Exchange - Part 13
Transmission of TIS-B Management Messages
EWP DELIVERABLE REFERENCE NUMBER
PROGRAMME REFERENCE INDEX EDITION : 0.10
SUR.ET1.ST05.2000-STD-13-01 EDITION DATE : September 2001
AbstractThis document describes the application of ASTERIX to TIS-B Management Messages
CONTACT PERSON : C. Leclerc TEL : 3355 UNIT : DIS/COM
DOCUMENT STATUS AND TYPE
STATUS CATEGORY CLASSIFICATIONWorking Draft þ Executive Task o General Public þDraft o Specialist Task o EATMP oProposed Issue o Lower Layer Task þ Restricted oReleased Issue o
ELECTRONIC BACKUP
INTERNAL REFERENCE NAME :HOST SYSTEM MEDIA SOFTWARE(S)
Microsoft Windows Type : Hard diskMedia Identification :
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DOCUMENT APPROVAL
The following table identifies all management authorities who have successively approved thepresent issue of this document.
AUTHORITY NAME AND SIGNATURE DATE
SURT
Chairman M. Rees
COMT
Chairman G. Bailey
EATMP
Project Leader W. Philipp
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DOCUMENT CHANGE RECORD
The following table records the complete history of the successive editions of the presentdocument.
EDITION DATE REASON FOR CHANGESECTIONS
PAGESAFFECTED
0.10 Sep. 2001 Creation of Eurocontrol document ALL
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TABLE OF CONTENTS
DOCUMENT IDENTIFICATION SHEET ................................................................................ ii
DOCUMENT APPROVAL...................................................................................................... v
DOCUMENT CHANGE RECORD......................................................................................... vi
4.2 Time Management .....................................................................................................6
4.3 Unused Bits in Data Items. .......................................................................................6
4.4 User Application Profile and Data Blocks ...............................................................7
4.5 Composition of Messages ........................................................................................7
5. LAYOUT OF MESSAGES...........................................................................................8
5.1 Standard Data Items..................................................................................................8
5.2 Description of Standard Data Items.........................................................................9
5.2.1 Data Item I022/010, Version Number ...................................................................9
5.2.2 Data Item I022/020, Service Volume Identity........................................................9
5.2.3 Data Item I022/030, Surveillance Source Type.....................................................9
5.2.4 Data Item I022/040, Update Period .................................................................... 10
5.2.5 Data Item I022/050, Number of TIS-B Targets ................................................... 10
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5.2.6 Data Item I022/060, Number of ADS-B Targets ................................................. 11
5.2.7 Data Item I022/070, Accuracy of TIS-B Targets ................................................. 11
5.2.8 Data Item I022/080, Service Volume Reference Point........................................ 12
5.2.9 Data Item I022/090, Service Volume Altitude Extremes ..................................... 13
5.2.10 Data Item I022/100, Service Volume Vertices................................................. 14
5.3 User Application Profile for Category 022 .............................................................15
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1. INTRODUCTION
1.1 Scope
1.1.1 This document describes the structure for the transmission of TIS-Bmanagement messages from a TIS-B server to TIS-B ground stations.
1.1.2 This document defines the data out of Category 022.
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2. REFERENCES
2.1 General
The following Documents and Standards contain provisions which, throughreferences in this text, constitute provisions of this Eurocontrol StandardDocument.
At the time of publication of this Eurocontrol Standard Document, the editionsindicated for the referenced documents and standards were valid.
Any revision of the referenced ICAO Documents shall be immediately taken intoaccount to revise this Eurocontrol Standard Document.
Revisions of the other referenced documents shall not form part of the provisionsof this Eurocontrol Standard Document until they are formally reviewed andincorporated into this Eurocontrol Standard Document.
In the case of a conflict between the requirements of this Eurocontrol StandardDocument and the contents of the other referenced documents, this EurocontrolStandard Document shall take precedence.
2.2 Reference Documents
1. Eurocontrol Standard 000-1-92. Directives for the Uniform Drafting andPresentation of Eurocontrol Standard Documents. 1992.
2. Eurocontrol Standard SUR.ET1.ST05.2000-STD-01-01. All PurposeStructured Eurocontrol suRveillance Information Exchange - ASTERIX,edition 1.26 November 2000.
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3. DEFINITIONS, ACRONYMS AND ABBREVIATIONS
3.1 Definitions
For the purposes of this Eurocontrol Document, the following definitions shallapply:
3.1.1 Amalgamation: Amalgamation is the process by which tracks from co-operating SDPS are merged to form an 'amalgamated'track. It is used to smooth any possible differencesbetween the tracks to allow the same amalgamated trackinformation to be served to the users of both SDPS.
3.1.2 Calculated Item: A piece of information (e.g. the position of a target) derivedfrom raw information through an intermediate processingsuch as transformation of co-ordinates, tracking, codeconversion, etc.
3.1.3 Catalogue ofData Items:
List of all the possible Data Items of each Data Categorydescribing the Data Items by their reference, structure,size and units (where applicable).
3.1.4 Data Block: Unit of information seen by the application as a discreteentity by its contents. A Data Block contains one or moreRecord(s) containing data of the same category.
3.1.5 Data Category: Classification of the data in order to permit inter alia aneasy identification.
3.1.6 Data Field: Physical implementation for the purpose of communicationof a Data Item, it is associated with a unique FieldReference Number and is the smallest unit of transmittedinformation.
3.1.7 Data Item: The smallest unit of information in each Data Category.
3.1.8 Measured Item: A piece of information (e.g. the position of a target) directlyderived from raw information and transmitted without anysmoothing.
3.1.9 Record: A collection of transmitted Data Fields of the samecategory preceded by a Field Specification field, signallingthe presence/absence of the various Data Fields
3.1.10 Service: An SDPS information service is uniquely identified by aservice identification and is composed of a track elementand a sensor element. A track element is characterised bythe track selection (e.g. set of Mode-3/A codes, filtering inheight, primary only, secondary only… ), the track itemselection (e.g. WGS-84 position, Time of Day… ), the tracktransmission characteristics (e.g. synchronised on sensor,periodical, a-periodical event-triggered). A sensor elementis characterised by the sensor selection, the sensor item
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selection, the sensor transmission characteristics.
3.1.11 State vector: A vector describing the state of an object in terms ofposition co-ordinates, ground speed, course, accelerationsand Mode-of-Flight.
3.1.12 Track: Time sequence of state vectors of an object estimated bysome real time filtering technique using surveillance dataas input.
3.1.13 UserApplicationProfile:
The mechanism for assigning Data Items to Data Fields,and containing all necessary information which needs tobe standardised for the successful encoding and decodingof the messages.
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3.2 Acronyms and Abbreviations
For the purposes of this Eurocontrol Document, the following shall apply:
° Degree (angle)ADS-B Automatic Dependent Surveillance - BroadcastASTERIX All Purpose STructured Eurocontrol suRveillance Information
EXchange
CAT Data Category
EATMP European Air Traffic Management Programme
FRN Field Reference NumberFSPEC Field SpecificationFX Field Extension Indicator
ICAO International Civil Aviation Organization
LEN Length IndicatorLSB Least Significant Bit
PSR Primary Surveillance Radar
RE Reserved Expansion IndicatorREP Field Repetition Indicator
s second, unit of timeSAC System Area CodeSDPS Surveillance Data Processing SystemSIC System Identification CodeSP Special Purpose IndicatorSSR Secondary Surveillance RadarSTFRDE Surveillance Task Force on Radar Data ExchangeSURT Surveillance Team (EATMP)
UAP User Application Profile (see Definitions )UTC Co-ordinated Universal Time
WGS-84 World Geodetic System 84
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4. GENERAL PRINCIPLES
4.1 General
This document describes the application of ASTERIX to ADS-B target reports.
4.2 Time Management
The time-stamping shall comply with ICAO Annex 5.
4.3 Unused Bits in Data Items.
Decoders of ASTERIX data shall never assume and rely on specific settings ofspare or unused bits. However in order to improve the readability of binarydumps of ASTERIX records, it is recommended to set all spare bits to zero.
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4.4 User Application Profile and Data Blocks
4.5.1 A single User Application Profile (UAP) is defined and shall be used for ADS-Bmessages.
4.5.2 Data Blocks shall have the following layout.
CAT = 022 LEN FSPEC Items of thefirst record
FSPEC Items of thelast record
where:
• Data Category (CAT) = 022, is a one-octet field indicating that the DataBlock contains TIS-B management messages;
• Length Indicator (LEN) is a two-octet field indicating the total length inoctets of the Data Block, including the CAT and LEN fields;
• FSPEC is the Field Specification.
4.5 Composition of Messages
4.6.1 Messages shall be composed of Data Items assembled in the order defined bythe Field Reference Number (FRN) in the associated UAP.
4.6.2 When sent, items shall always be transmitted in a Record with the correspondingFSPEC bits set to one.
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5. LAYOUT OF MESSAGES
5.1 Standard Data Items
The standardised Data Items which shall be used for the transmission of TIS-Bmanagement messages are defined in Table 1 and described in the followingpages.
Table 1 - Data Items of Category 022
Data ItemReferenceNumber
DescriptionSystem Units
I022/010 Version Number N.A.
I022/020 Service Volume Identity N.A.
I022/030 Surveillance Source Type N.A.
I022/040 Update Period N.A.
I022/050 Number of TIS-B Targets N.A.
I022/060 Number of ADS-B Targets N.A.
I022/070 Accuracy of TIS-B Targets N.A.
I022/080 Service Volume Reference Point N.A.
I022/090 Service Volume Altitude Extremes 6.25 ft
I022/100 Service Volume Vertices N.A.
NOTE: N.A. = Not Applicable
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5.2 Description of Standard Data Items
5.2.1 Data Item I022/010, Version NumberDefinition: Version number of the TIS-B service.Format: One-octet fixed length Data ItemStructure:
Octet no. 18 7 6 5 4 3 2 10 0 0 0 version number
Bits-8/5 spare bits set to zeroBits-4/1 version number = 0 to 15
5.2.2 Data Item I022/020, Service Volume IdentityDefinition: Identification number of the TIS-B service volume.Format: One-octet fixed length Data ItemStructure:
Octet no. 18 7 6 5 4 3 2 10 0 0 0 0 0 SVI
Bits-8/3 spare bits set to zeroBits-2/1 (SVI) = 0 service volume number 1
= 1 service volume number 2= 2 service volume number 3= 3 service volume number 4
5.2.3 Data Item I022/030, Surveillance Source TypeDefinition: Surveillance source used for TIS-B target data.Format: One-octet fixed length Data ItemStructure:
Octet no. 18 7 6 5 4 3 2 10 0 0 0 0 0 SRC
Bits-8/3 spare bits set to zeroBits-2/1 (SRC) = 0 PSR
= 1 SSR mono radar= 2 multi sensor (including SSR) and/or multilateration system= 3 SMGCS
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5.2.4 Data Item I022/040, Update PeriodDefinition: The time within which all TIS-B targets will be transmitted by the
ground station.Format: One-octet fixed length Data ItemStructure:
Octet no. 18 7 6 5 4 3 2 10 0 update period
Bits-8/7 spare bits set to zeroBits-6/1 update period:
= 0 reserved= 1 update period 0,5 sec= 2 update period 1,0 sec= 3 update period 2,0 sec…= 61 update period 60,0 sec= 62-63 unused
5.2.5 Data Item I022/050, Number of TIS-B TargetsDefinition: The number of TIS-B targets transmitted by the ground station in
the last update period.Format: Two-octet fixed length Data ItemStructure:
Octet no. 1 Octet no. 2
16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
0 0 0 0 0 0 Number of TIS-B Targets
Bits-16/11 spare bits set to zeroBits-10/1 Number of TIS-B Targets:
= 0-1022 Number of TIS-B targets= 1023 Not available
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5.2.6 Data Item I022/060, Number of ADS-B TargetsDefinition: Number of ADS-B equipped aircraft in the service volume at the
time of transmission of the messageFormat: Two-octet fixed length Data ItemStructure:
Octet no. 1 Octet no. 2
16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
0 0 0 0 0 0 Number of ADS-B Targets
Bits-16/11 spare bits set to zeroBits-10/1 number of ADS-B targets:
= 0-1022 Number of ADS-B targets= 1023 Not available
5.2.7 Data Item I022/070, Accuracy of TIS-B TargetsDefinition: The accuracy of TIS-B targets in the service volumeFormat: One-octet fixed length Data ItemStructure:
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5.2.8 Data Item I022/080, Service Volume Reference PointDefinition: Reference point of TIS-B service volume in WGS-84 co-ordinates.Format : Six-octet fixed length Data Item.Structure:
Octet no. 1 Octet no. 2
48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33
Latitude in WGS - 84
Octet no. 3 Octet no. 4
32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17
LSB
Octet no. 5 Octet no. 6
16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
Longitude in WGS – 84 LSB
Bits-48/25 (Latitude) In WGS.84 in two’s complement.Range -90 <= latitude <= 90 deg.
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5.2.10 Data Item I022/100, Service Volume VerticesDefinition : Designation of lateral extents of TIS-B service volume.Format : One-octet repetition factor (REP >= 3), followed by N geographical
points expressed in WGS-84 co-ordinates, which are the consecutivevertices of the area.
Structure:
Octet no. 156 55 54 53 52 51 50 49
REP
Octet no. 2 Octet no. 3
48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33
Latitude in WGS - 84
Octet no. 4 Octet no. 5
32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17
LSB
Octet no. 6 Octet no. 7
16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
Longitude in WGS - 84 LSB
Bits-56/49 (REP) Repetition Factor
Bits-48/26 (Latitude) In WGS.84 in two’s complement.Range -90 <= latitude <= 90 deg.
bit 25 (LSB) = 180/223 degreesapprox. 2.145767 * 10-05 degrees.
This corresponds to a resolution ofat least 2.4 meters
Bits-24/2 (Longitude) In WGS.84 in two’s complement.Range -180 <= longitude <= 180 deg.
This corresponds to a resolution ofat least 2.4 meters.
NOTES 1. Closure of the polygon is not required.2. None of the border segments that make up the geographical area should
cross or overlap.
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5.3 User Application Profile for Category 022
The following User Application Profile shall be used for the transmission of TIS-Bmanagement messages.
Table 2 – TIS-B Management Messages UAP
FRN Data Item Information Length1 I022/010 Version Number 12 I022/020 Service Volume Identity 13 I022/030 Surveillance Source Type 14 I022/040 Update Period 15 I022/050 Number of TIS-B Targets 26 I022/060 Number of ADS-B Targets 27 I022/070 Accuracy of TIS-B Targets 1
FX - Field Extension Indicator -8 I022/080 Service Volume Reference Point 69 I022/090 Service Volume Altitude Extremes 410 I022/100 Service Volume Vertices 1+3*N11 - Spare -12 - Spare -13 RE Reserved Expansion Field 1+14 SP Special Purpose Field 1+FX - Field Extension Indicator -
In the above table• the first column indicates the Field Reference Number (FRN) associated
to each Data Item used in the UAP;• the fourth column gives the format and the length of each item, a
stand-alone figure indicates the octet-count of a fixed-length Data Item, 1+indicates a variable-length Data Item comprising a first part of 1 octetfollowed by n-octets extents as necessary.