ITU-R M 1796-2-2014 Characteristics of and protection criteria for terrestrial radars operating in the radiodetermination service in the frequency band 8 500-10 680 MHz《频率在8500-106.pdf
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1、 Recommendation ITU-R M.1796-2(02/2014)Characteristics of and protection criteria for terrestrial radars operating in the radiodetermination service in the frequency band 8 500-10 680 MHzM SeriesMobile, radiodetermination, amateurand related satellite servicesii Rec. ITU-R M.1796-2 Foreword The role
2、 of the Radiocommunication Sector is to ensure the rational, equitable, efficient and 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 adop
3、ted. The regulatory and policy functions of the Radiocommunication Sector are performed 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
4、Policy for ITU-T/ITU-R/ISO/IEC referenced in Annex 1 of Resolution ITU-R 1. Forms to 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 Poli
5、cy for ITU-T/ITU-R/ISO/IEC and the ITU-R patent information database can also be found. 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 Broadcastin
6、g service (sound) BT Broadcasting service (television) F Fixed service M Mobile, radiodetermination, 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 co
7、ordination between fixed-satellite and fixed service systems SM Spectrum management SNG 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-
8、R 1. Electronic Publication Geneva, 2014 ITU 2014 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without written permission of ITU. Rec. ITU-R M.1796-2 1 RECOMMENDATION ITU-R M.1796-2 Characteristics of and protection criteria for terrestrial radars oper
9、ating in the radiodetermination service in the frequency band 8 500-10 680 MHz*(2007-2012-2014) Scope This Recommendation provides the technical and operational characteristics and protection criteria for radiodetermination systems operating in the frequency band 8 500-10 680 MHz. It was developed w
10、ith the intention to support sharing studies in conjunction with Recommendation ITU-R M.1461 addressing analysis procedures for determining compatibility between radars operating in the radiodetermination service and other services. Keywords Radar, Protection criteria, Search radar, Interference, ra
11、diodetermination Abbreviations/Glossary CFAR Constant-false-alarm-rate IMO International Maritime Organization pps Pulses per second SART Search and rescue transponder The ITU Radiocommunication Assembly, considering a) that antenna, signal propagation, target detection, and large necessary bandwidt
12、h characteristics of radars to achieve their functions are optimum in certain frequency bands; b) that the technical characteristics of radiodetermination radars are determined by the mission of the system and vary widely even within a frequency band; c) that ITU-R is considering the potential for t
13、he introduction of new types of systems or services in frequency bands between 420 MHz and 34 GHz used by radars in the radiodetermination service; d) that representative technical and operational characteristics of radars operating in the radiodetermination service are required to determine, if nec
14、essary, the feasibility of introducing new types of systems into frequency bands allocated to the radiodetermination service, noting a) that technical and operational characteristics of maritime radar beacons operating in the frequency band 9 300-9 500 MHz are to be found in Recommendation ITU-R M.8
15、24; *Characteristics of meteorological ground-based radars operating in this frequency band are contained in Recommendation ITU-R M.1849. 2 Rec. ITU-R M.1796-2 b) that technical parameters of radar target enhancers operating in the frequency band 9 300-9 500 MHz are to be found in Recommendation ITU
16、-R M.1176; c) that technical and operational characteristics of search and rescue radar transponders (SART) operating in the frequency band 9 200-9 500 MHz are to be found in Recommendation ITU-R M.628, recognizing a) that the required protection criteria depend upon the specific types of interferin
17、g signals; b) that the application of protection criteria may require consideration for the inclusion of the statistical nature of the application of those criteria and other elements of the methodology for performing compatibility studies (e.g. propagation loss). Further development of these statis
18、tical considerations, together with the required probability of detection for various maritime operational scenarios may be incorporated into future revisions of this Recommendation, as appropriate, recommends 1 that the technical and operational characteristics of the radiodetermination radars desc
19、ribed in Annex 1 should be considered representative of those operating in the frequency band 8 500-10 680 MHz; 2 that this Recommendation, in conjunction with Recommendation ITU-R M.1461, should be used in analysing compatibility between radiodetermination radars and systems in other services; 3 th
20、at the criterion of interfering signal power to radar receiver noise power level, an I/N ratio of 6 dB, should be used as the required protection level for radiodetermination radars in the frequency band 8 500-10 680 MHz, even if multiple interferers are present (see Note 1); 4 that the results of i
21、nterference susceptibility trials performed on shipborne radionavigation radars operating in the frequency band 9 200-9 500 MHz, which are contained in Annex 3, should be used in assessing interference into shipborne radionavigation radars, noting that the results are for non-fluctuating targets and
22、 that radar cross-section (RCS) fluctuations should be taken into account. NOTE 1 Further information is provided in Annex 2. Annex 1 Technical and operational characteristics of radars in the radiodetermination service in the frequency band 8 500-10 680 MHz 1 Introduction The characteristics of rad
23、iodetermination radars operating worldwide in the frequency band 8 500-10 680 MHz are presented in Tables 1, 2, 3 and 4, and described further in the following paragraphs. Rec. ITU-R M.1796-2 3 2 Technical characteristics The frequency band 8 500-10 680 MHz is used by many different types of radars
24、on land-based, transportable, shipboard, and airborne platforms. Radiodetermination functions performed in the frequency band include airborne and surface search, ground-mapping, terrain-following, navigation (both aeronautical and maritime), target-identification, and meteorological (both airborne
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