ITU-R SM 1270-1997 Additional Information for Monitoring Purposes Related to Classification and Designation of Emission《与发射分类和指定有关的检测额外信息》.pdf
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1、Rec. ITU-R SM.1270 1 RECOMMENDATION ITU-R SM. 1270 ADDITIONAL INFORMATION FOR MONITORING PURPOSES RELATED TO CLASSIFICATION AND DESIGNATION OF EMISSION (Question ITU-R l/l) (1 997) The ITU Radiocommunication Assembly, considering that due to new techniques and technical capabilities the number of te
2、letype and other methods of that Article 25, No. 2055 (Article S19) of the Radio Regulations (RR) stipulates that: “All transmissions shall a) communication is increasing; b) be capable of being identified either by identification signals or by other means”; c) Recommendation ITU-R SM.1138 (RR Appen
3、dix 6, Part A) is sufficient for frequency management purposes; d) unambiguous and complete characterization of emissions, that the designation of emission in five characters mentioned in RR Article 4, Section Il (Article S4) and in that for monitoring purposes these five symbols for the classificat
4、ion of emission are inadequate for recommends that specified additional information should be collected by administrations on the different types of emissions; that a common database should be created at a place accessible to all monitoring services; that the structure of the database should be in a
5、ccordance with Annex 1, 1 2 3 ANNEX 1 Structure of the database Field name SYSTNUM SYSNAME TYPE ALPHABET BITS DET-COR MARK-CY REP-CY Type Length I 4 A 20 (Note 1) A 20 A 8 5 20 10 10 Description System number starting with 0001 common used system name like: SITOR, ROU-FEC, PACKET, TOR-342, etc. Syst
6、em type Possibilities: starstop burst type ARQ pulse train FEC twinplex SITOR multitone navigationlocation Used alphabet like ITA-2, SITOR, ITA-5 Number of bits per character Detectionkorrection system parity, marlspace ratio 3:4, etc. Mark cycle every 4,5 or 8 characters can be inverted to enable t
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