ITU-R SA 1160-3-2017 Aggregate interference criteria for data transmission systems in the Earth exploration-satellite and meteorologicalsatellite services using satellites in the g.pdf
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1、 Recommendation ITU-R SA.1160-3 (07/2017) Aggregate interference criteria for data transmission systems in the Earth exploration-satellite and meteorological-satellite services using satellites in the geostationary orbit SA Series Space applications and meteorology ii Rec. ITU-R SA.1160-3 Foreword T
2、he role 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 a
3、re adopted. 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
4、Patent 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 Pate
5、nt Policy 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 Broa
6、dcasting 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
7、 and coordination 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 Resoluti
8、on ITU-R 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.1160-3 1 RECOMMENDATION ITU-R SA.1160-3 Aggregate interference criteria for data transmission systems
9、 in the Earth exploration-satellite and meteorological-satellite services using satellites in the geostationary orbit (Question ITU-R 141/7) (1995-1997-1999-2017) Scope The purpose of this Recommendation is to provide aggregate interference criteria for data transmission links for GSO satellites in
10、the Earth exploration-satellite and meteorological-satellite services. Keywords EESS, METSAT, GSO satellites, data transmission, interference criteria Related Recommendations and Reports Recommendations ITU-R SA.1022, ITU-R SA.1159 and ITU-R SA.1161 The ITU Radiocommunication Assembly, considering a
11、) that interference criteria are needed to ensure that systems can be designed to achieve adequate performance in the presence of interference; b) that interference criteria may be determined using the methodology described in Recommendation ITU-R SA.1022 and the performance objectives listed in Rec
12、ommendation ITU-R SA.1159; c) that interference criteria assist in the development of criteria for sharing bands among systems, including those operating in other services; d) that systems in the Earth exploration-satellite service (EESS) and meteorological-satellite (MetSat) service must specify in
13、terference thresholds at levels greater than or equal to the permissible levels; e) that the Annex presents the parameters of representative systems that provide the basis for determination of interference criteria for pertinent transmissions in the EESS and MetSat service, recommends that the inter
14、ference criteria levels specified in Table 1 should be used as the permissible aggregate levels of interfering signal power at the antenna output of stations operating in the EESS and MetSat service. 2 Rec. ITU-R SA.1160-3 TABLE 1 Interference criteria for stations in the EESS and MetSat service usi
15、ng spacecraft in the geostationary orbit Frequency band (MHz) Interfering signal power (dBW) in the reference bandwidth to be exceeded for no more than 20% of the time Interfering signal power (dBW) in the reference bandwidth to be exceeded for no more than p% of the time 1 670-1 710 space-to-Earth
16、158.0 dBW per 1 MHz 152.8 dBW per 1 MHz p 0.025 2 025-2 110 Earth-to-space 139.9 dBW per 1 MHz 136.6 dBW per 1 MHz p 0.025 25 500-27 000 space-to-Earth 144.6 dBW per 10 MHz 133.0 dBW per 10 MHz p 0.25 NOTE 1 The interfering signal powers (dBW) in the reference bandwidths are specified for reception
17、at elevation angles 3. NOTE 2 The total interfering signal power level that may be exceeded for no more than x% of the time, where x is less than 20% but greater than the specified short-term time percentage (p% of the time), may be determined by interpolation between the specified values using a lo
18、garithmic scale (base 10) for percentage of time and a linear scale for interfering signal power density (dB). NOTE 3 The interference criteria can be expressed as permissible power flux-densities into the main beam of the receive antenna by subtracting 10 log(G 2/4) from the value given in Table 1,
19、 where G is the receive antenna gain and is the wavelength. NOTE 4 Although the interference criteria are based on the systems described in the Annex, the interference criteria apply to all systems that operate in the subject frequency bands and which provide the specified service functions. Annex B
20、asis for determination of interference criteria This Annex presents the parameters used as inputs to the methodology of Recommendation ITU-R SA.1022 to determine the interference criteria for raw instrument data downlink transmissions to main reception earth stations belonging to satellite operator
21、and data dissemination to user stations. 1 Raw instrument data downlink transmissions to main reception earth stations Table 2 develops these criteria for raw instrument data downlink transmissions to main reception earth stations, in which all of the interference enters the receiving earth station
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