Asterix Cat022 Tis b Management Messages Part v0.10!13!092001

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

KeywordsASTERIX Category 22 Management Messages TIS-B

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 :

Surveillance Data Exchange - Part 13Transmission of TIS-B ManagementMessages

SUR.ET1.ST05.2000-STD-13-01

Edition : 0.10 Working Draft Page iii

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

SUR.ET1.ST05.2000-STD-13-01 Surveillance Data Exchange - Part 13Transmission of TIS-B Management

Messages

Page iv Working Draft Edition : 0.10

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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Edition : 0.10 Working Draft Page v

TABLE OF CONTENTS

DOCUMENT IDENTIFICATION SHEET ................................................................................ ii

DOCUMENT APPROVAL...................................................................................................... v

DOCUMENT CHANGE RECORD......................................................................................... vi

1. INTRODUCTION.........................................................................................................1

1.1 Scope ........................................................................................................................1

2. References.................................................................................................................2

2.1 General.......................................................................................................................2

2.2 Reference Documents...............................................................................................2

3. Definitions, acronyms and abbreviations................................................................3

3.1 Definitions..................................................................................................................3

3.2 Acronyms and Abbreviations ...................................................................................5

4. GENERAL PRINCIPLES.............................................................................................6

4.1 General.......................................................................................................................6

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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Edition : 0.10 Working Draft Page 1

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


Messages


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.


Messages


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:


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:

Octet no. 18 7 6 5 4 3 2 10 0 0 0 TIS-B target accuracy

Bits-8/5 spare bits set to zeroBits-4/1 TIS-B target accuracy:

= 0 Unknown= 1 < 10 NM= 2 < 5 NM= 3 < 1 NM= 4 < 0.5 NM= 5 < 0.25 NM= 6 < 0.1 NM= 7 < 0.05 NM= 8 < 10 m= 9 < 3 m


Messages


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:


48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33

Latitude in WGS - 84


32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17

LSB


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.

(LSB) = 180/223 degreesapprox. 2.145767 * 10-05 degrees.

This corresponds to a resolution of atleast 2.4 meters.

Bits-24/1 (Longitude) In WGS.84 in two’s complement.Range -180 <= longitude < 180 deg.

(LSB) = 180/223 degreesapprox. 2.145767 * 10-05 degrees

This corresponds to a resolution of atleast 2.4 meters.


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5.2.9 Data Item I022/090, Service Volume Altitude ExtremesDefinition : Altitude extremes of TIS-B service volume, related to (standard)

barometric pressure.Format : Four-Octet fixed length data item.Structure:


32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17

Lower barometric altitude LSB


16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

Upper barometric altitude LSB

Bits-32/17 Lower barometric altitude(LSB) = 6.25 ftVmin = -1500 ftVmax = 150000 ft

Bits-16/1 Upper barometric altitude(LSB) = 6.25 ftVmin = -1500 ftVmax = 150000 ft


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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


48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33

Latitude in WGS - 84


32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17

LSB


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.

Bit-1 (LSB) = 180/223 degreesapprox. 2.145767 * 10-05 degrees

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.

Asterix Cat022 Tis b Management Messages Part v0.10!13!092001

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