1、 Recommendation ITU-R M.628-5(03/2012)Technical characteristics for searchand rescue radar transpondersM SeriesMobile, radiodetermination, amateurand related satellite servicesii Rec. ITU-R M.628-5 Foreword The role of the Radiocommunication Sector is to ensure the rational, equitable, efficient and
2、 economical use of the radio-frequency spectrum by all radiocommunication services, including satellite services, and carry out studies without limit of frequency range on the basis of which Recommendations are adopted. The regulatory and policy functions of the Radiocommunication Sector are perform
3、ed by World and Regional Radiocommunication Conferences and Radiocommunication Assemblies supported by Study Groups. Policy on Intellectual Property Right (IPR) ITU-R policy on IPR is described in the Common Patent Policy for ITU-T/ITU-R/ISO/IEC referenced in Annex 1 of Resolution ITU-R 1. Forms to
4、be used for the submission of patent statements and licensing declarations by patent holders are available from http:/www.itu.int/ITU-R/go/patents/en where the Guidelines for Implementation of the Common Patent Policy for ITU-T/ITU-R/ISO/IEC and the ITU-R patent information database can also be foun
5、d. Series of ITU-R Recommendations (Also available online at http:/www.itu.int/publ/R-REC/en) Series Title BO Satellite delivery BR Recording for production, archival and play-out; film for television BS Broadcasting service (sound) BT Broadcasting service (television) F Fixed service M Mobile, radi
6、odetermination, amateur and related satellite services P Radiowave propagation RA Radio astronomy RS Remote sensing systems S Fixed-satellite service SA Space applications and meteorology SF Frequency sharing and coordination between fixed-satellite and fixed service systems SM Spectrum management S
7、NG Satellite news gathering TF Time signals and frequency standards emissions V Vocabulary and related subjects Note: This ITU-R Recommendation was approved in English under the procedure detailed in Resolution ITU-R 1. Electronic Publication Geneva, 2012 ITU 2012 All rights reserved. No part of thi
8、s publication may be reproduced, by any means whatsoever, without written permission of ITU. Rec. ITU-R M.628-5 1 RECOMMENDATION ITU-R M.628-51Technical characteristics for search and rescue radar transponders (1986-1990-1992-1994-2006-2012) Summary of revisions This revision reflects updated SOLAS
9、Convention Regulations and IMO Resolutions. Scope This Recommendation contains technical characteristics for search and rescue radar transponders (SART). A SART is used for locating a ship or survival craft at sea when it is in distress. A ship or survival craft at sea can use a SART to indicate tha
10、t it is in distress. The SART can be detected by radars operating in the frequency band 9 200-9 500 MHz. The ITU Radiocommunication Assembly, considering a) that there is a need to locate vessels or their survival craft in distress at sea; b) that part of that need can be fulfilled by the Global Mar
11、itime Distress Safety System; c) that the location of vessels and survival craft in distress at sea is enhanced by the carriage of radar transponders; d) that a locating system is more effective if the radar transponder was in conformity with internationally agreed technical and operating characteri
12、stics; e) that the International Maritime Organization (IMO) has adopted a Recommendation on performance standards for survival craft radar transponders for use in search and rescue operations, recognizing that the International Convention for the Safety of Life at Sea (SOLAS) requires the carriage
13、of one or more radar transponders operating in the 9 200 to 9 500 MHz frequency band, recommends 1 that the technical characteristics of search and rescue radar transponders (SART) operating in the frequency range 9 200-9 500 MHz should be in accordance with Annex 1; 2 that the maximum detection ran
14、ge of a SART having technical characteristics in accordance with Annex 1 by a radar conforming with the latest relevant IMO Resolution should be assessed using its measured technical characteristics in conjunction with the theoretical method given in Annex 2; 3 Notes 1 and 2 should be considered as
15、part of this Recommendation. 1The Director, Radiocommunication Bureau, is requested to bring this Recommendation to the attention of the International Maritime Organization (IMO), the International Civil Aviation Organization (ICAO), the International Electrotechnical Commission (IEC) and the Intern
16、ational Association of Lighthouse Authorities (IALA). 2 Rec. ITU-R M.628-5 NOTE 1 The propagation losses of a SART signal caused by a survival craft and its occupants are explained in Annex 3. NOTE 2 The technical characteristics of circular polarization SARTs are described in Annex 4. Annex 1 (Edit
17、orial note: No changes for Annex 1.) Annex 2 Detection ranges for search and rescue radar transponders operating over the band 9 200-9 500 MHz (Editorial note: No change for the body of this Annex apart from insertion of title.) Annex 3 (Editorial note: No changes for Annex 3.) Annex 4 (Editorial note: No changes for Annex 4.) _
