1、 Recommendation ITU-R SA.510-3 (07/2017) Feasibility of frequency sharing between the space research service and other services in bands near 14 and 15 GHz Potential interference from data relay satellite systems SA Series Space applications and meteorology ii Rec. ITU-R SA.510-3 Foreword The role o
2、f 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 adopte
3、d. 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 Po
4、licy 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 Policy
5、 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 Broadcasting
6、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 coor
7、dination 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-R
8、1. Electronic Publication Geneva, 2017 ITU 2017 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without written permission of ITU. Rec. ITU-R SA.510-3 1 RECOMMENDATION ITU-R SA.510-3 Feasibility of frequency sharing between the space research service and
9、other services in bands near 14 and 15 GHz Potential interference from data relay satellite systems (Question ITU-R 118/7) (1978-1982-1997-2017) Scope This Recommendation provides conditions for the feasibility of frequency sharing, on a non-interference basis, between transmitters in the space rese
10、arch service and receivers of other services near 14 and 15 GHz. Keywords Frequency, sharing, SRS, 14 GHz, 15 GHz Related ITU-R Recommendations and Reports Recommendation ITU-R SA.1626 The ITU Radiocommunication Assembly, considering a) that frequency sharing within the range 13 to 16 GHz between ne
11、ar-Earth space research applications (transmitters of the data relay satellite (DRS) system) and other services is feasible; b) that, in accordance with the relevant provisions of the Radio Regulations, the space research service may operate on a secondary basis in some of the bands where other serv
12、ices are primary, recognizing that frequency sharing, on a non-interference basis, between transmitters in the space research service and receivers of other services is feasible near 14 and 15 GHz provided that appropriate pfd limits are specified for the space research service; recommends that, in
13、frequency bands near 14 and 15 GHz shared between the space research service (DRS systems) and other services, the space research satellites should operate with the following pfd limits produced at the surface of the Earth in any 4 kHz band for all conditions and methods of modulation not exceeding: 148 dB(W/m2) for 0 5148 ( 5)/2 dB(W/m2) for 5 25138 dB(W/m2) for 25 90where is the angle of arrival of the radio-frequency wave (degrees above the horizontal); and that these limits relate to the pfd and angles of arrival which would be obtained under free-space propagation conditions.
