Publication: Magyar Közlöny
Issue: MK-2007-70 (Year: 2007, Number: 70)
Era: 2004-2010
Section: Melléklet a 2007. évi XLVI. törvényhez
Paragraph Index: 4565

b) Mode S transponder carriage is required on the basis of regional air navigation agreement in accordance with 2.1.3.3.1 and 2.1.3.3.2. Note.— Aircraft with maximum cruising true airspeed exceeding 324 km/h (175 kt) are required to operate with a peak power of not less than 21.0 dBW as specified in 3.1.2.10.2 c). 2.1.5.4 CAPABILITY REPORTING IN MODE S SQUITTERS 2.1.5.4.1 Capability reporting in Mode S acquisition squitters (unsolicited downlink transmissions) shall be provided in accordance with the provisions of 3.1.2.8.5.1 for all Mode S transponders installed on or after 1 January 1995. 2.1.5.4.2 Recommendation.— Transponders equipped for extended squitter operation should have a means to disable acquisition squitters when extended squitters are being emitted. Note.— This will facilitate the suppression of acquisition squitters if all ACAS units have been converted to receive the extended squitter. 2.1.5.5 EXTENDED LENGTH MESSAGE (ELM) TRANSMIT POWER In order to facilitate the conversion of existing Mode S transponders to include full Mode S capability, transponders originally manufactured before 1 January 1999 shall be permitted to transmit a burst of 16 ELM segments at a minimum power level of 20 dBW. 2007/70/II. szám Annex 10 — Aeronautical Telecommunications Volume IV 28/11/02 2-6 Note.— This represents a 1 dB relaxation from the power requirement specified in 3.1.2.10.2. 2.1.6 SSR Mode S address (aircraft address) The SSR Mode S address shall be one of 16 777 214 twenty-four-bit aircraft addresses allocated by ICAO to the State of Registry or common mark registering authority and assigned as prescribed in 3.1.2.4.1.2.3.1.1 and the Appendix to Chapter 9, Part I, Volume III, Annex 10. 2.2 HUMAN FACTORS CONSIDERATIONS Recommendation.— Human Factors principles should be observed in the design and certification of surveillance radar and collision avoidance systems. Note.— Guidance material on Human Factors principles can be found in Doc 9683, Human Factors Training Manual and Circular 249 (Human Factors Digest No. 11 — Human Factors in CNS/ATM Systems). 2007/70/II. szám ANNEX 10 — VOLUME IV 3-1 28/11/02 CHAPTER 3. SURVEILLANCE RADAR SYSTEMS 3.1 SECONDARY SURVEILLANCE RADAR (SSR) SYSTEM CHARACTERISTICS Note 1.— Section 3.1.1 prescribes the technical characteristics of SSR systems having only Mode A and Mode C capabilities. Section 3.1.2 prescribes the characteristics of systems with Mode S capabilities. Note 2.— Systems using Mode S capabilities are generally used for air traffic control surveillance systems. In addition, certain ATC applications may use Mode S emitters, e.g. for vehicle surface surveillance or for fixed target detection on surveillance systems. Under such specific conditions, the term “aircraft” can be understood as “aircraft or vehicle (A/V)”. While those applications may use a limited set of data, any deviation from standard physical characteristics must be considered very carefully by the appropriate authorities. They must take into account not only their own surveillance (SSR) environment but also possible effects on other systems like ACAS. Note 3.— Non-Standard-International alternative units are used as permitted by Annex 5, Chapter 3, 3.2.2. 3.1.1 Systems having only Mode A and Mode C capabilities Note 1.— In this section, SSR modes are designated by letters A and C. Suffixed letters, e.g. A2, C4, are used to designate the individual pulses used in the air-to-ground pulse trains. This common use of letters is not to be construed as implying any particular association of modes and codes. Note 2.— Provisions for the recording and retention of radar data are contained in Annex 11, Chapter 6. 3.1.1.1 INTERROGATION AND CONTROL (INTERROGATION SIDE-LOBE SUPPRESSION) RADIO FREQUENCIES (GROUND-TO-AIR) 3.1.1.1.1 The carrier frequency of the interrogation and control transmissions shall be 1 030 MHz. 3.1.1.1.2 The frequency tolerance shall be plus or minus 0.2 MHz. 3.1.1.1.3 The carrier frequencies of the control transmission and of each of the interrogation pulse transmissions shall not differ from each other by more than 0.2 MHz. 3.1.1.2 REPLY CARRIER FREQUENCY (AIR-TO-GROUND) 3.1.1.2.1 The carrier frequency of the reply transmission shall be 1 090 MHz. 3.1.1.2.2 The frequency tolerance shall be plus or minus 3 MHz. 3.1.1.3 POLARIZATION Polarization of the interrogation, control and reply transmissions shall be predominantly vertical. 3.1.1.4 INTERROGATION MODES (SIGNALS-IN-SPACE) 3.1.1.4.1 The interrogation shall consist of two transmitted pulses designated P1 and P3. A control pulse P2 shall be transmitted following the first interrogation pulse P1. 2007/70/II. szám Annex 10 — Aeronautical Telecommunications Volume IV 28/11/02 3-2 3.1.1.4.2 Interrogation Modes A and C shall be as defined in 3.1.1.4.3. 3.1.1.4.3 The interval between P1 and P3 shall determine the mode of interrogation and shall be as follows: Mode A 8 ±0.2 microseconds Mode C 21 ±0.2 microseconds 3.1.1.4.4 The interval between P1 and P2 shall be 2.0 plus or minus 0.15 microseconds. 3.1.1.4.5 The duration of pulses P1, P2 and P3 shall be 0.8 plus or minus 0.1 microsecond. 3.1.1.4.6 The rise time of pulses P1, P2 and P3 shall be between 0.05 and 0.1 microsecond. Note 1.— The definitions are contained in Figure 3-1 “Definitions of secondary surveillance radar waveform shapes, intervals and the reference point for sensitivity and power”. Note 2.— The intent of the lower limit of rise time (0.05 microsecond) is to reduce sideband radiation. Equipment will meet this requirement if the sideband radiation is no greater than that which, theoretically, would be produced by a trapezoidal wave having the stated rise time. 3.1.1.4.7 The decay time of pulses P1, P2 and P3 shall be between 0.05 and 0.2 microsecond. Note.— The intent of the lower limit of decay time (0.05 microsecond) is to reduce sideband radiation. Equipment will meet this requirement if the sideband radiation is no greater than that which, theoretically, would be produced by a trapezoidal wave having the stated decay time. 3.1.1.5 INTERROGATOR AND CONTROL TRANSMISSION CHARACTERISTICS (INTERROGATION SIDE-LOBE SUPPRESSION — SIGNALS-IN-SPACE) 3.1.1.5.1 The radiated amplitude of P2 at the antenna of the transponder shall be:

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