1、168 Bit synchronization I Frame synchronization Rec. ITU-R SM.1052 RECOMMENDATION ITU-R SM. 1052 Data Error correction AUTOMATIC IDENTIFICATION OF RADIO STATIONS (Question ITU-R 34/1) (1994) The ITU Radiocommunication Assembly, considering a) identification signals or by other means; b) c) d) that t
2、he Radio Regulations require that all transmissions shall be capable of being identified either by that the variations in the types of automatic data transmission systems are increasing; that the identification of such data transmission systems made manually is very time consuming; that there are me
3、thods of identification by automatic system analysis, recommends that modem microprocessor technology-based equipment should be used to assist in identification; that for the HF-range the equipment perform at least: - measurement of frequency shift; - measurement of baud rate; - - that for VHF range
4、, the following identification signal format is accepted: 1. 2. continuous analysis of the transmission code; text output for standard code signals (for the most used codes see Annex 1); 3. ITU-R RECMNxSM. LO52 94 = 4855232 0523335 788 Rec. ITU-R SM.1052 ANNEX I 169 Bases for the named systems are t
5、he alphabets ITA number 2/3/5 and SITOR. One way or another those alphabets are involved in the codes of the named systems. ITA2 BAUDOT BAUDOT - CYRILLIC BAUDOT - ARABIC ARQ-1000 duplex ARQ-N TORG 10-1 1 UN-ARQ HC-ARQ ARTRAC F7 Baudot/Morse FEC- 1 O0 AUTOSPEC HNG-FEX Piccolo mk 6/2 Coquelet mk 1 Coq
6、uelet mk 2 ITA ARQ - E3 TOR 342 1 chamei TOR 342 2 channel TOR 342 4 channel TOR 242 2 channel ARQ-1000 simplex ARQ-6 70 FEC-100 simplex ITA ASCII PACKET Piccolo mk 6/5 TRA-2300 PAC-TOR SITOR POL-ARQ Simplex TOR-A Simplex TOR-B ARQ-SWE ARQ-6 98 ARQ-6 90 F7B -1 -2 -3 -4 -5 -6 Special Russ. Piccolo -1 -2 -3 -4 ROU-FEC RS-ARQ SITA (VHF) POCSAC (VHF) FACSIMILE
