Publication: Magyar Közlöny
Issue: MK-2009-104 (Year: 2009, Number: 104)
Era: 2004-2010
Section: 
Paragraph Index: 2457

b) version one (1) ADS-B or TIS-B messages, as defined in 3.1.2.8.6.2 and 3.1.2.8.7 respectively, when the navigation integrity category (NIC) is 10 or 11; UTC measured time data shall have a minimum range of 300 seconds and a resolution of 0.0078125 (1/128) seconds. 5.2.3.5.2 NON-PRECISION LOCAL TIME REFERENCE 5.2.3.5.2.1 For receiving systems not intended to generate ADS-B and/or TIS-B reports based on reception of ADS-B or TIS-B messages meeting the NUC or NIC criteria as indicated in 5.2.3.5.1, a non-precision time source shall be allowed. In such cases, where there is no appropriate precision time source available, the receiving system shall establish an appropriate internal clock or counter having a maximum clock cycle or count time of 20 milliseconds. The established cycle or clock count shall have a minimum range of 300 seconds and a resolution of 0.0078125 (1/128) seconds. Note.— The use of a non-precision time reference as described above is intended to allow the report time of applicability to accurately reflect the time intervals applicable to reports within a sequence. For example the applicable time interval between state vector reports could be accurately determined by a client application, even though the absolute time (e.g. UTC measured time) would not be indicated by the report. 5.2.3.6 REPORTING REQUIREMENTS 5.2.3.6.1 Reporting requirements for Type I Mode S extended squitter airborne receiving systems. As a minimum, the report assembler function associated with Type I Mode S extended squitter receiving systems, as defined in 5.2.3, shall support that subset of ADS-B and TIS-B reports and report parameters, that are required by the specific client applications being served by that receiving system. 5.2.3.6.2 Reporting requirements for Type II Mode S extended squitter airborne receiving systems. The report assembler function associated with Type II receiving systems, as defined in 5.2.3, shall generate ADS-B and TIS-B reports according to the class of the receiving system as shown in Table 5-4 when the prerequisite ADS-B and/or TIS-B messages are being received. Annex 10 — Aeronautical Telecommunications Volume IV 22/11/07 5-8 5.2.3.6.3 Reporting requirements for Mode S extended squitter ground receiving systems. As a minimum, the report assembler function associated with Mode S extended squitter ground receiving systems, as defined in 5.2.3, shall support that subset of ADS-B reports and report parameters, that are required by the specific client applications being served by that receiving system. 5.2.4 Interoperability The Mode S extended squitter receiving system shall provide interoperability with both version 0 and version 1 extended squitter ADS-B message formats. Note 1.— Version 0 and version 1 messages are defined in the Technical Provisions for Mode S Services and Extended Squitter (Doc 9871). Note 2.— Techniques for providing interoperability of version 0 and version 1 ADS-B message formats are described in the Manual on the Secondary Surveillance Radar (SSR) Systems (Doc 9684) and further information is provided in RTCA DO-260A, Appendix N. 5.2.4.1 INITIAL MESSAGE DECODING The Mode S extended squitter receiving system shall, upon acquiring a new ADS-B target, initially apply the decoding provisions applicable to version 0 (zero) ADS-B messages until or unless an operational status message is received indicating version 1 (one) message format is in use. 5.2.4.2 APPLYING VERSION NUMBER The Mode S extended squitter receiving system shall decode the version number information conveyed in the operational status message and shall apply the corresponding decoding rules, version 0 (zero) or version 1 (one), for the decoding of the subsequent extended squitter ADS-B messages from that specific airborne or vehicle. 5.2.4.3 HANDLING OF RESERVED MESSAGE SUBFIELDS The Mode S extended squitter receiving system shall ignore the contents of any message subfield defined as reserved. Note.— This provision supports interoperability between message versions by allowing the definition of additional parameters that will be ignored by earlier receiver versions and correctly decoded by newer receiver versions. Chapter 5 Annex 10 — Aeronautical Telecommunications 5-9 22/11/07 TABLES FOR CHAPTER 5 Table 5-1. ADS-B Class A equipment characteristics Equipment class Minimum transmit power (at antenna terminal) Maximum transmit power (at antenna terminal) Airborne or surface Minimum extended squitter message capability required (see Note 2) Airborne Airborne position A/C identification and type Airborne velocity A/C operational status Extended squitter A/C status A0 (Minimum) 18.5 dBW (see Note 1) 27 dBW Surface Surface position A/C identification and type A/C operational status Extended squitter A/C status Airborne Airborne position A/C identification and type Airborne velocity A/C operational status Extended squitter A/C status A1 (Basic) 21 dBW 27 dBW Surface Surface position A/C identification and type A/C operational status Extended squitter A/C status Airborne Airborne position A/C identification and type Airborne velocity A/C operational status Extended squitter A/C status Reserved for target state and status A2 (Enhanced) 21 dBW 27 dBW Surface Surface position A/C identification and type A/C operational status Extended squitter A/C status Airborne Airborne position A/C identification and type Airborne velocity A/C operational status Extended squitter A/C status Reserved for target state and status A3 (Extended) 23 dBW 27 dBW Surface Surface position A/C identification and type A/C operational status Extended squitter A/C status Note 1.— See Chapter 3, 3.1.2.10.2 for restrictions on the use of this category of Mode S transponder. Note 2.— The extended squitter messages applicable to Class A equipment are defined in Version 1 of extended squitter formats of the Technical Provisions for Mode S Services and Extended Squitter (Doc 9871). Annex 10 — Aeronautical Telecommunications Volume IV 22/11/07 5-10 Table 5-2. ADS-B Class B equipment characteristics Equipment class Minimum transmit power (at antenna terminal) Maximum transmit power (at antenna terminal) Airborne or surface Minimum extended squitter message capability required Airborne Airborne position A/C identification and type Airborne velocity A/C operational status Extended squitter A/C status B0 (Airborne) 18.5 dBW (see Note 1) 27 dBW Surface Surface position A/C identification and type A/C operational status Extended squitter A/C status Airborne Airborne position A/C identification and type Airborne velocity A/C operational status Extended squitter A/C status B1 (Airborne) 21 dBW 27 dBW Surface Surface position A/C identification and type A/C operational status Extended squitter A/C status B2 Low (Ground Vehicle) 8.5 dBW < 18.5 dBW (see Note 2) Surface Surface position A/C identification and type A/C operational status B2 (Ground Vehicle) 18.5 dBW 27 dBW (see Note 2) Surface Surface position A/C identification and type A/C operational status B3 (Fixed Obstacle) 18.5 dBW 27 dBW (see Note 2) Airborne (see Note 3) Airborne position A/C identification and type A/C operational status Note 1.— See Chapter 3, 3.1.2.10.2 for restrictions on the use of this category of Mode S transponder. Note 2.— The appropriate ATS authority is expected to get the maximum power level permitted. Note 3.— Fixed obstacles use the airborne ADS-B message formats since knowledge of their location is of primary interest to airborne aircraft. Chapter 5 Annex 10 — Aeronautical Telecommunications 5-11 22/11/07 Table 5-3. Reception performance for airborne receiving systems Receiver class Intended air-to-air operational range Receiver minimum trigger threshold level (MTL) Reception technique Required extended squitter ADS-B message support (see Note 3) Required extended squitter TIS-B message support (see Note 4) A0 (Basic VFR) 10 nmi. –72 dBm (see Note 1) Standard (See Note 2) Airborne position Surface position Airborne velocity Airborne identification and type Extended squitter airborne status Airborne operational status Fine airborne position Coarse airborne position Fine surface position Identification and type Airborne velocity Management A1 (Basic IFR) 20 nmi. –79 dBm (see Note 1) Enhanced (See Note 2) Airborne position Surface position Airborne velocity Airborne identification and type Extended squitter airborne status Airborne operational status Fine airborne position Coarse airborne position Fine surface position Identification and type Airborne velocity Management A2 (Enhanced IFR) 40 nmi. –79 dBm (see Note 1) Enhanced (See Note 2) Airborne position Surface position Airborne velocity Airborne identification and type Extended squitter airborne status Airborne operational status Reserved for target state and status Fine airborne position Coarse airborne position Fine surface position Identification and type Airborne velocity Management A3 (Extended capability) 90 nmi. –84 dBm (and -87 dBm at 15% probability of reception – see Note 1) Enhanced (See Note 2) Airborne position Surface position Airborne velocity Airborne identification and type Extended squitter airborne status Airborne operational status Reserved for target state and status Fine airborne position Coarse airborne position Fine surface position Identification and type Airborne velocity Management Note 1.— Specific MTL is referenced to the signal level at the output terminal of the antenna, assuming a passive antenna. If electronic amplification is integrated into the antenna assembly, then the MTL is referenced at the input to the amplifier. For Class A3 receivers, a second performance level is defined at a received signal level of –87 dBm where 15 per cent of the messages are to be successfully received. MTL values refer to reception under non-interference conditions. Note 2.— The extended squitter receiver reception techniques are defined in 5.2.2.4. “Standard” reception techniques refer to the baseline techniques, as required for ACAS 1 090 MHz receivers, that are intended to handle single overlapping Mode A/C fruit. “Enhanced” reception techniques refer to techniques intended to provide improved reception performance in the presence of multiple overlapping Mode A/C fruit and improved decoder re-triggering in the presence of overlapping stronger Mode S fruit. The requirements for the enhanced reception techniques that are applicable to the specific airborne receiver classes are defined in 5.2.2.4. Note 3.— The extended squitter messages are defined in the Technical Provisions for Mode S Services and Extended Squitter (Doc 9871). However, the target state and status message, as defined in the Manual on Mode S Specific Services (Doc 9688), is not yet at the same level of maturity as the other ADS-B messages. Note 4.— The TIS-B messages are defined in the Technical Provisions for Mode S Services and Extended Squitter (Doc 9871). Annex 10 — Aeronautical Telecommunications Volume IV 22/11/07 5-12 Table 5-4. Mode S extended squitter airborne receiving system reporting requirements Receiver class Minimum ADS-B reporting requirements Minimum TIS-B reporting requirements A0 (Basic VFR) ADS-B state vector report (per 5.2.3.1.1) and ADS-B mode status report (per 5.2.3.1.2) TIS-B state report and TIS-B management report A1 (Basic IFR) ADS-B state vector report (per 5.2.3.1.1) and ADS-B mode status report (per 5.2.3.1.2) and ADS-B air referenced velocity report (ARV) (per 5.2.3.1.3) TIS-B state report and TIS-B management report A2 (Enhanced IFR) ADS-B state vector report (per 5.2.3.1.1) and ADS-B mode status report (per 5.2.3.1.2) and ADS-B ARV report (per 5.2.3.1.3) and Reserved for ADS-B target state report (per 5.2.3.1.4) TIS-B state report and TIS-B management report A3 (Extended capability) ADS-B state vector report (per 5.2.3.1.1) and ADS-B mode status report (per 5.2.3.1.2) and ADS-B ARV report (per 5.2.3.1.3) and Reserved for ADS-B target state report (per 5.2.3.1.4) TIS-B state report and TIS-B management report Chapter 5 Annex 10 — Aeronautical Telecommunications 5-13 22/11/07 FIGURE FOR CHAPTER 5 Figure 5-1. ADS-B/TIS-B system functional model ___________________ GNSS, navigation and other data Airborne applications using ADS-B and/or TIS-B data Ground applications using ADS-B data Pilot input (e.g. call sign) Message transmission at 1 090 MHz Transmitting system Transmitting system Receiving system Receiving system Pressure altitude ADS-B message generation function TIS-B message generation function ADS-B/TIS-B message exchange function receive – ADS-B message exchange function receive – ADS-B message exchange function transmit – TIS-B message exchange function transmit – ADS-B/TIS-B report assembler function ADS-B report assembler function Surveillance data (e.g. from SSR) Aircraft Ground ANNEX 10 — VOLUME IV ATT-1 22/11/07 ATTACHMENT TO VOLUME IV Guidance material related to airborne collision avoidance system (ACAS) Note 1.— The following material is intended to provide guidance concerning the technical characteristics of the airborne collision avoidance system (ACAS) having vertical resolution capability (ACAS II, unless stated otherwise). ACAS SARPs are contained in Chapter 4. Note 2.— Non-SI alternative units are used as permitted by Annex 5, Chapter 3, Section 3.2.2. In limited cases, to ensure consistency at the level of the logic calculations, units such as ft/s, NM/s and kt/s are used.

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