Publication: Magyar Közlöny
Issue: MK-2007-70 (Year: 2007, Number: 70)
Era: 2004-2010
Section: Melléklet a 2007. évi XLVI. törvényhez
Paragraph Index: 4654

b) when on the surface (3.1.2.8.6.7), the non-transponder device shall transmit ES/NT squitters using the top antenna. 3.1.2.8.7.6 Register timeout. The non-transponder device shall clear all 56 bits of the airborne position, surface position and velocity registers used for these messages if these registers are not updated within two seconds of the previous update. This timeout shall be determined separately for each of these registers. Termination of extended squitter broadcast shall be as specified in Annex 10, Volume III, Part I, Appendix 1 to Chapter 5, 2.4.3. Note.— These registers are cleared to prevent the reporting of outdated position and velocity information. 3.1.2.8.7.7 Airborne/surface state determination. Aircraft with an automatic means of determining on-the-ground condition shall use this input to select whether to report the airborne or surface message types. Aircraft without such means shall report the airborne type messages. 3.1.2.8.7.8 Surface squitter rate control. Once per second the algorithm for aircraft motion specified in Table 2-7 in Annex 10, Volume III, Part I, Appendix 1 to Chapter 5 shall be executed. The surface squitter rate shall be set according to the results of this algorithm. 2007/70/II. szám Chapter 3 Annex 10 — Aeronautical Telecommunications 3-61 28/11/02 3.1.2.8.8 EXTENDED SQUITTER MILITARY APPLICATION, DOWNLINK FORMAT 19 Note.— This format supports the broadcast of extended squitter ADS-B messages in support of military applications. A separate format is used to distinguish these extended squitters from the standard ADS-B message set broadcast using DF = 17 or 18. 3.1.2.8.8.1 Military format. The format used for DF = 19 shall be a 112-bit downlink format containing the following fields: 3.1.2.8.8.2 Application field. This 3-bit (6-8) downlink field in DF = 19 shall be used to define the format of the 112-bit transmission. Code 0 to 7 = Reserved 3.1.2.8.9 EXTENDED SQUITTER MAXIMUM TRANSMISSION RATE 3.1.2.8.9.1 The maximum total number of extended squitters (DF = 17, 18 or 19) emitted by any extended squitter installation shall not exceed 6.2 per second. 3.1.2.9 AIRCRAFT IDENTIFICATION PROTOCOL 3.1.2.9.1 Aircraft identification reporting. A ground-initiated Comm-B request (3.1.2.6.11.2) containing RR equals 18 and either DI does not equal 7 or DI equals 7 and RRS equals 0 shall cause the resulting reply to contain the aircraft identification in its MB field. 3.1.2.9.1.1 AIS, aircraft identification subfield in MB. The transponder shall report the aircraft identification in the 48bit (41-88) AIS subfield of MB. The aircraft identification transmitted shall be that employed in the flight plan. When no flight plan is available, the registration marking of the aircraft shall be inserted in this subfield. Note.— When the registration marking of the aircraft is used, it is classified as “fixed direct data” (3.1.2.10.5.1.1). When another type of aircraft identification is used, it is classified as “variable direct data” (3.1.2.10.5.1.3). 3.1.2.9.1.2 Coding of the AIS subfield. The AIS subfield shall be coded as follows: Note.— Aircraft identification coding provides up to eight characters. The BDS code for the aircraft identification message shall be BDS1 equals 2 (33-36) and BDS2 equals 0 (37-40). Each character shall be coded as a 6-bit subset of the International Alphabet Number 5 (IA-5) as illustrated in Table 3-7. The character code shall be transmitted with the high order unit (b6) first and the reported aircraft identification shall be transmitted with its left-most character first. Characters shall be coded consecutively without intervening SPACE code. Any unused character spaces at the end of the subfield shall contain a SPACE character code. AF:3 Field Reference DF downlink format 3.1.2.3.2.1.2 AF control field 3.1.2.8.8.2 BDS Char. 1 Char. 2 Char. 3 Char. 4 Char. 5 Char. 6 Char. 7 Char. 8 2007/70/II. szám Annex 10 — Aeronautical Telecommunications Volume IV 28/11/02 3-62 Table 3-7. Character coding for transmission of aircraft identification by data link (subset of IA-5 — see 3.1.2.9.1.2) 3.1.2.9.1.3 Aircraft identification capability report. Transponders which respond to a ground-initiated request for aircraft identification shall report this capability in the data link capability report (3.1.2.6.10.2.2.2) by setting bit 33 of the MB subfield to 1. 3.1.2.9.1.4 Change of aircraft identification. If the aircraft identification reported in the AIS subfield is changed in flight, the transponder shall report the new identification to the ground by use of the Comm-B broadcast message protocol of 3.1.2.6.11.4. 3.1.2.10 ESSENTIAL SYSTEM CHARACTERISTICS OF THE SSR MODE S TRANSPONDER 3.1.2.10.1 Transponder sensitivity and dynamic range. Transponder sensitivity shall be defined in terms of a given interrogation signal input level and a given percentage of corresponding replies. Only correct replies containing the required bit pattern for the interrogation received shall be counted. Given an interrogation that requires a reply according to 3.1.2.4, the minimum triggering level, MTL, shall be defined as the minimum input power level for 90 per cent replyto-interrogation ratio. The MTL shall be –74 dBm ±3 dB. The reply-to-interrogation ratio of a Mode S transponder shall be:

Source: https://magyarkozlony.hu/hivatalos-lapok/7e70cec03f34e3c2efd8610b865b65591eafd701/dokumentumok/a55dc160549d57fa4db0035e37c6a6a98dd1a0b9/letoltes