Publication: Magyar Közlöny
Issue: MK-2009-104 (Year: 2009, Number: 104)
Era: 2004-2010
Section: 
Paragraph Index: 2341

b) less than 1 800 per second averaged over a 1-second interval. Note.— Typical minimum distance to ensure sidelobe separation between interrogators is 35 km. 3.1.2.11.2 INTERROGATOR-EFFECTIVE RADIATED POWER Recommendation.— The effective radiated power of all interrogation pulses should be minimized as described in 3.1.1.8.2. 3.1.2.11.3 Inactive-state interrogator output power. When the interrogator transmitter is not transmitting an interrogation, its output shall not exceed –5 dBm effective radiated power at any frequency between 960 MHz and 1 215 MHz. Note.— This constraint ensures that aircraft flying near the interrogator (as close as 1.85 km (1 NM)) will not receive interference that would prevent them from being tracked by another interrogator. In certain instances even smaller interrogator-to-aircraft distances are of significance, for example if Mode S surveillance on the airport surface is used. In such cases a further restraint on inactive state interrogator output power may be necessary. 3.1.2.11.3.1 Spurious emission radiation Recommendation.— CW radiation should not exceed 76 dB below 1 watt. Chapter 3 Annex 10 — Aeronautical Telecommunications 3-71 22/11/07 3.1.2.11.4 Tolerances on transmitted signals. In order that the signal-in-space be received by the transponder as described in 3.1.2.1, the tolerances on the transmitted signal shall be as summarized in Table 3-12. 3.1.2.11.5 SPURIOUS RESPONSE Recommendation.— The response to signals not within the passband should be at least 60 dB below normal sensitivity. 3.1.2.11.6 Lockout coordination. A Mode S interrogator shall not be operated using all-call lockout until coordination has been achieved with all other operating Mode S interrogators having any overlapping coverage volume in order to ensure that no interrogator can be denied the acquisition of Mode S-equipped aircraft. Note.— This coordination may be via ground network or by the allocation of interrogator identifier (II) codes and will involve regional agreements where coverage overlaps international boundaries. 3.1.2.11.7 MOBILE INTERROGATORS Recommendation.— Mobile interrogators should acquire, whenever possible, Mode S aircraft through the reception of squitters. Note.— Passive squitter acquisition reduces channel loading and can be accomplished without the need for coordination. Annex 10 — Aeronautical Telecommunications Volume IV 22/11/07 3-72 TABLES FOR CHAPTER 3 Table 3-1. Pulse shapes — Mode S and intermode interrogations (Rise time) (Decay time) Pulse Duration Duration tolerance Min. Max. Min. Max. P1, P2, P3, P5 0.8 ±0.1 0.05 0.1 0.05 0.2 P4 (short) 0.8 ±0.1 0.05 0.1 0.05 0.2 P4 (long) 1.6 ±0.1 0.05 0.1 0.05 0.2 P6 (short) 16.25 ±0.25 0.05 0.1 0.05 0.2 P6 (long) 30.25 ±0.25 0.05 0.1 0.05 0.2 Table 3-2. Pulse shapes — Mode S replies (Rise time) (Decay time) Pulse duration Duration tolerance Min. Max. Min. Max. 0.5 ±0.05 0.05 0.1 0.05 0.2 1.0 ±0.05 0.05 0.1 0.05 0.2 Table 3-3. Field definitions Field Format Designator Function UF DF Reference AA Address announced 11, 17, 18 3.1.2.5.2.2.2 AC Altitude code 4, 20 3.1.2.6.5.4 AF Application field 3.1.2.8.8.2 AP Address/parity All 0, 4, 5, 16, 20, 21, 24 3.1.2.3.2.1.3 AQ Acquisition 3.1.2.8.1.1 CA Capability 11, 17 3.1.2.5.2.2.1 CC Cross-link capability 3.1.2.8.2.3 CF Control field 3.1.2.8.7.2 CL Code label 3.1.2.5.2.1.3 DF Downlink format All 3.1.2.3.2.1.2 DI Designator identification 4, 5, 20, 21 3.1.2.6.1.3 DR Downlink request 4, 5, 20, 21 3.1.2.6.5.2 DS Data selector 3.1.2.8.1.3 FS Flight status 4, 5, 20, 21 3.1.2.6.5.1 IC Interrogator code 3.1.2.5.2.1.2 ID Identity 5, 21 3.1.2.6.7.1 Chapter 3 Annex 10 — Aeronautical Telecommunications 3-73 22/11/07 Field Format Designator Function UF DF Reference KE Control, ELM 3.1.2.7.3.1 MA Message, Comm-A 20, 21 3.1.2.6.2.1 MB Message, Comm-B 20, 21 3.1.2.6.6.1 MC Message, Comm-C 3.1.2.7.1.3 MD Message, Comm-D 3.1.2.7.3.3 ME Message, extended squitter 17, 18 3.1.2.8.6.2 MU Message, ACAS 4.3.8.4.2.3 MV Message, ACAS 3.1.2.8.3.1, 4.3.8.4.2.4 NC Number of C-segment 3.1.2.7.1.2 ND Number of D-segment 3.1.2.7.3.2 PC Protocol 4, 5, 20, 21 3.1.2.6.1.1 PI Parity/interrogator identifier 11, 17, 18 3.1.2.3.2.1.4 PR Probability of reply 3.1.2.5.2.1.1 RC Reply control 3.1.2.7.1.1 RI Reply information 3.1.2.8.2.2 RL Reply length 3.1.2.8.1.2 RR Reply request 4, 5, 20, 21 3.1.2.6.1.2 SD Special designator 4, 5, 20, 21 3.1.2.6.1.4 UF Uplink format All 3.1.2.3.2.1.1 UM Utility message 4, 5, 20, 21 3.1.2.6.5.3 VS Vertical status 3.1.2.8.2.1 Table 3-4. Subfield definitions Subfield Designator Function Field Reference ACS Altitude code subfield ME 3.1.2.8.6.3.1.2 AIS Aircraft identification subfield MB 3.1.2.9.1.1 ATS Altitude type subfield MB 3.1.2.8.6.8.2 BDS 1 Comm-B data selector subfield 1 MB 3.1.2.6.11.2.1 BDS 2 Comm-B data selector subfield 2 MB 3.1.2.6.11.2.1 IDS Identifier designator subfield UM 3.1.2.6.5.3.1 IIS Interrogator identifier subfield SD 3.1.2.6.1.4.1 a) UM 3.1.2.6.5.3.1 LOS Lockout subfield SD 3.1.2.6.1.4.1 d) LSS Lockout surveillance subfield SD 3.1.2.6.1.4.1 g) MBS Multisite Comm-B subfield SD 3.1.2.6.1.4.1 c) MES Multisite ELM subfield SD 3.1.2.6.1.4.1 c) Annex 10 — Aeronautical Telecommunications Volume IV 22/11/07 3-74 Subfield Designator Function Field Reference RCS Rate control subfield SD 3.1.2.6.1.4.1 f) RRS Reply request subfield SD 3.1.2.6.1.4.1 e) and g) RSS Reservation status subfield SD 3.1.2.6.1.4.1 c) SAS Surface antenna subfield SD 3.1.2.6.1.4.1 f) SCS Squitter capability subfield MB 3.1.2.6.10.2.2.1 SIC Surveillance identifier capability MB 3.1.2.6.10.2.2.1 SIS Surveillance identifier subfield SD 3.1.2.6.1.4.1 g) SRS Segment request subfield MC 3.1.2.7.7.2.1 SSS Surveillance status subfield ME 3.1.2.8.6.3.1.1 TAS Transmission acknowledgement subfield MD 3.1.2.7.4.2.6 TCS Type control subfield SD 3.1.2.6.1.4.1 f) TMS Tactical message subfield SD 3.1.2.6.1.4.1 d) TRS Transmission rate subfield MB 3.1.2.8.6.8.1 Table 3-5. Interrogation — reply protocol summary Interrogation UF Special conditions Reply DF RL (3.1.2.8.1.2) equals 0 RL (3.1.2.8.1.2) equals 1 RR (3.1.2.6.1.2) less than 16 RR (3.1.2.6.1.2) equal to or greater than 16 RR (3.1.2.6.1.2) less than 16 RR (3.1.2.6.1.2) equal to or greater than 16 Transponder locked out to interrogator code, IC (3.1.2.5.2.1.2) Stochastic reply test fails (3.1.2.5.4) Otherwise No reply No reply RR (3.1.2.6.1.2) less than 16 RR (3.1.2.6.1.2) equal to or greater than 16 AP contains broadcast address (3.1.2.4.1.2.3.1.3) No reply RR (3.1.2.6.1.2) less than 16 RR (3.1.2.6.1.2) equal to or greater than 16 AP contains broadcast address (3.1.2.4.1.2.3.1.3) No reply RC (3.1.2.7.1.1) equals 0 or 1 RC (3.1.2.7.1.1) equals 2 or 3 No reply Chapter 3 Annex 10 — Aeronautical Telecommunications 3-75 22/11/07 Table 3- .٦Table for register 1016 Subfields of register 1016 MB bits Comm-B bits Continuation flag ACAS capability 16 and 37-40 48 and 69-72 Mode S subnetwork version number 17-23 49-55 Transponder enhanced protocol indicator Specific services capability Uplink ELM capability 26-28 58-60 Downlink ELM capability 29-32 61-64 Aircraft identification capability Squitter capability subfield (SCS) Surveillance identifier code capability (SIC) Common usage GICB capability report Status of DTE sub-addresses 0 to 15 41-56 73-88 Table 3-7. Validation of on-the-ground status Determination of airborne status A/V category Ground speed Airspeed Radio altitude No information No change to on-the-ground status Weight < 15 500 lbs (7 031 kg) No change to on-the-ground status Weight ≥15 500 lbs (7 031 kg) >100 knots or >100 knots or >50 feet High performance (>5 g acceleration and >400 knots) >100 knots or >100 knots or >50 feet Rotorcraft No change to on-the-ground status Table 3- .٨Surface format broadcast without an automatic means of on-the-ground determination ADS-B Emitter Category set “A” Coding Meaning Ground Speed Airspeed Radio Altitude No ADS-B emitter category information Always report airborne position message (3.1.2.8.6.3.1) Light (<15 500 lbs or 7 031 kg) Always report airborne position message (3.1.2.8.6.3.1) Small (15 500 to 75 000 lbs or 7 031 to 34 019 kg) < 100 knots and <100 knots and <50 feet Large (75 000 lbs to 300 000 lbs or 34 019 to 136 078 kg) <100 knots and <100 knots and <50 feet Annex 10 — Aeronautical Telecommunications Volume IV 22/11/07 3-76 High-vortex aircraft <100 knots and <100 knots and <50 feet Heavy (> 300 000 lbs or 136 078 kg) <100 knots and <100 knots and <50 feet High performance (>5g acceleration and >400 knots) <100 knots and <100 knots and <50 feet Rotorcraft Always report airborne position message (3.1.2.8.6.3.1) ADS-B Emitter Category Set “B” Coding Meaning Ground Speed Airspeed Radio Altitude No ADS-B emitter category information Always report airborne position message (3.1.2.8.6.3.1) Glider/sailplane Always report airborne position message (3.1.2.8.6.3.1) Lighter-than-air Always report airborne position message (3.1.2.8.6.3.1) Parachutist/skydiver Always report airborne position message (3.1.2.8.6.3.1) Ultra-light/hang-glider/paraglider Always report airborne position message (3.1.2.8.6.3.1) Reserved Reserved Unmanned aerial vehicle Always report airborne position message (3.1.2.8.6.3.1) Space/trans-atmospheric vehicle <100 knots and <100 knots and <50 feet ADS-B Emitter Category Set “C” Coding Meaning No ADS-B emitter category information Always report airborne position message (3.1.2.8.6.3.1) Surface vehicle – emergency vehicle Always report surface position message (3.1.2.8.6.3.2) Surface vehicle - service vehicle Always report surface position message (3.1.2.8.6.3.2) Fixed ground or tethered obstruction Always report airborne position message (3.1.2.8.6.3.1) 4 – 7 Reserved Reserved ADS-B Emitter Category Set “D” Coding Meaning No ADS-B emitter category information Always report airborne position message (3.1.2.8.6.3.1) 1 – 7 Reserved Reserved Chapter 3 Annex 10 — Aeronautical Telecommunications 3-77 22/11/07 Table 3-9. Character coding for transmission of aircraft identification by data link (subset of IA-5 — see 3.1.2.9.1.2) b6 b5 b4 b3 b2 b1 P SP A Q B R C S D T E U F V G W H X I Y J Z K L M N O Annex 10 — Aeronautical Telecommunications Volume IV 22/11/07 3-78 Table 3-10. Timer characteristics Timer Duration Tolerance Name Number Reference Symbol s s Resettable Non-selective lock-out 3.1.2.6.9.2 TD ±1 no Temporary alert 3.1.2.6.10.1.1.2 TC ±1 no SPI 3.1.2.6.10.1.3 TI ±1 no Reservations B, C, D 3* 3.1.2.6.11.3.1 TR ±1 yes Multisite lockout 3.1.2.6.9.1 TL ±1 no * As required Table 3-11. DAPs registers Register Name Data content Bits MCP/FCU selected altitude 1-13 FMS selected altitude 14-26 Barometric pressure setting minus 800 mb 27-39 MCP/FCU mode bits 48-51 40 {HEX} Selected vertical intention Target altitude source bits 54-56 Roll angle 1-11 True track angle 12-23 Ground speed 24-34 Track angle rate 35-45 50 {HEX} Track and turn report True airspeed 46-56 Magnetic heading 1-12 Indicated airspeed 13-23 Mach 24-34 Barometric altitude rate 35-45 60 {HEX} Heading and speed report Inertial vertical velocity 46-56 Chapter 3 Annex 10 — Aeronautical Telecommunications 3-79 22/11/07 Table 3-12. Transmitted signal tolerances Reference Function Tolerance 3.1.2.1.4.1 Pulse duration P1, P2, P3, P4, P5 Pulse duration P6 ±0.09 microsecond ±0.20 microsecond 3.1.1.4 Pulse duration P1 – P3 Pulse duration P1 – P2 ±0.18 microsecond ±0.10 microsecond 3.1.2.1.5.1.3 Pulse duration P3 – P4 ±0.04 microsecond 3.1.2.1.5.2.4 Pulse duration P1 – P2 Pulse duration P2 — sync phase reversal Pulse duration P6 — sync phase reversal Pulse duration P5 — sync phase reversal ±0.04 microsecond ±0.04 microsecond ±0.04 microsecond ±0.05 microsecond 3.1.1.5 Pulse amplitude P3 P1 ±0.5 dB 3.1.2.1.5.1.4 Pulse amplitude P4 P3 ±0.5 dB 3.1.2.1.5.2.5 Pulse amplitude P6 Equal to or greater than P2 – 0.25 dB 3.1.2.1.4.1 Pulse rise times 0.05 microsecond minimum, 0.1 microsecond maximum 3.1.2.1.4.1 Pulse decay times 0.05 microsecond minimum, 0.2 microsecond maximum Annex 10 — Aeronautical Telecommunications Volume IV 22/11/07 3-80 FIGURES FOR CHAPTER 3 Definitions Phase reversal. A 180-degree change in the phase of the radio frequency carrier. Phase reversal duration. The time between the 10-degree and 170-degree points of a phase reversal. Pulse amplitude A. The peak voltage amplitude of the pulse envelope. Pulse decay time. The time between 0.9A and 0.1A on the trailing edge of the pulse envelope. Pulse duration. The time interval between 0.5A points on leading and trailing edges of the pulse envelope. Pulse interval. The time interval between the 0.5A point on the leading edge of the first pulse and the 0.5A point on the leading edge of the second pulse. Pulse rise time. The time between 0.1A and 0.9A on the leading edge of the pulse envelope. Time intervals. The intervals are referenced to:

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