ITU-R RS 1263-1-2010 Interference criteria for meteorological aids operated in the 400 15-406 MHz and 1 668 4-1 700 MHz bands《运行于400 15-406 MHz和1668 4-1700 MHz频段的气象辅助的干扰标准》.pdf
《ITU-R RS 1263-1-2010 Interference criteria for meteorological aids operated in the 400 15-406 MHz and 1 668 4-1 700 MHz bands《运行于400 15-406 MHz和1668 4-1700 MHz频段的气象辅助的干扰标准》.pdf》由会员分享,可在线阅读,更多相关《ITU-R RS 1263-1-2010 Interference criteria for meteorological aids operated in the 400 15-406 MHz and 1 668 4-1 700 MHz bands《运行于400 15-406 MHz和1668 4-1700 MHz频段的气象辅助的干扰标准》.pdf(12页珍藏版)》请在麦多课文档分享上搜索。
1、 Recommendation ITU-R RS.1263-1(01/2010)Interference criteria for meteorological aids operated in the 400.15-406 MHz and 1 668.4-1 700 MHz bandsRS SeriesRemote sensing systemsRec. ITU-R RS.1263-1 ii Foreword The role of the Radiocommunication Sector is to ensure the rational, equitable, efficient an
2、d 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 perfor
3、med 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 fou
5、nd. 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, rad
6、iodetermination, 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
7、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 1. Electronic Publication Geneva, 2010 ITU 2010 All rights reserved. No part of th
8、is publication may be reproduced, by any means whatsoever, without written permission of ITU. Rec. ITU-R RS.1263-1 1RECOMMENDATION ITU-R RS.1263-1 Interference criteria for meteorological aids operated in the 400.15-406 MHz and 1 668.4-1 700 MHz bands (Question ITU-R 144/7) (1997-2010) Scope This Re
9、commendation provides interference criteria data which should be used for compatibility and sharing studies for MetAids operating in the 400.15-406 MHz and 1 668.4-1 700 MHz bands. The ITU Radiocommunication Assembly, considering a) that interference criteria are needed to ensure that systems can be
10、 designed to achieve adequate performance in the presence of interference; b) that the performance objectives for radiosonde, dropsonde, and rocketsonde systems are specified in Recommendation ITU-R RS.1165; c) that interference criteria assist in the development of criteria for sharing bands among
11、systems, including those operating in other services; d) that systems in the meteorological aids (MetAids) service must specify interference thresholds at least equal to the permissible levels, recommends 1 that the interference levels specified in Tables 1 and 2 should be used as the permissible to
12、tal levels of interfering signal power at the antenna output of receiving stations operating in the MetAids service based on the MetAids parameters of representative systems as provided in Annex 1. Rec. ITU-R RS.1263-1 2 TABLE 1 Interference criteria for radiosonde systems in the MetAids service Par
13、ameter Radio direction finding (RDF) radiosonde system 1 668.4-1 700 MHz GPS radiosonde system 1 675-1 683 MHz NAVAID with directional antenna 400.15-406 MHz NAVAID with omnidirectional antenna 400.15-406 MHz System reference bandwidth 1 300 kHz 150 kHz 300 kHz Interference signal power (dBW) in the
14、 reference bandwidth to be exceeded no more than PLOCK-LOSS% of the time 135.3 137.2 141.9 Not applicable(1)Percentage of time, PLOCK-LOSS (%)(2) 0.02 0.025 0.02 Not applicable(1)Interference signal power (dBW) in the reference bandwidth to be exceeded no more than PDATA-LOSS% of the time 139.4 145.
15、7 149.6 154.4 Percentage of time, PDATA-LOSS(%)(2)0.8 0.125 0.2 0.2 Interference signal power (dBW) in the reference bandwidth to be exceeded no more than 20% of the time(2)155.2 152.6 156.1 (1)Systems with omnidirectional antennas are not vulnerable to losing antenna lock on the signal due to inter
16、ference or signal fading. (2)This percentage of time shall not be exceeded on a per-flight basis. Rec. ITU-R RS.1263-1 3TABLE 2 Interference criteria for rocketsonde and dropsonde systems in the MetAids service Parameter Airborne dropsonde systems400.15-406 MHz Rocketsonde systems 400.15-406 MHz Sys
17、tem reference bandwidth 20 kHz 3 MHz Interference signal power (dBW) in the reference bandwidth to be exceeded no more than PLOCK-LOSS% of the time Not applicable(1)116.9 PLOCK-LOSS(%)(2)Not applicable(1)0.02 Interference signal power (dBW) in the reference bandwidth to be exceeded no more than PDAT
18、A-LOSS% of the time 161.6 122.1 PDATA-LOSS(%)(2)0.060 0.060 Interference signal power (dBW) in the reference bandwidth to be exceeded no more than 20% of the time 168.9 135.6 (1)Systems with omnidirectional antennas are not vulnerable to losing antenna lock on the signal due to interference or signa
19、l fading. (2)This percentage of time shall not be exceeded on a per-flight basis. Annex 1 Basis for performance and interference criteria for MetAids in the 400.15-406 MHz and 1 668.4-1 700 MHz bands 1 Introduction The bands 400.15-406 MHz (referred to as the 403 MHz bands throughout) and 1 668.4-1
20、700 MHz (referred to as the 1 680 MHz band throughout) are allocated to MetAids on a primary basis. The bands 400.15-403 MHz and 1 670-1 700 MHz are also allocated to the meteorological satellite (METSAT) users on a co-primary basis; and the band 400.15-401 MHz is allocated to the mobile-satellite s
21、ervice (MSS) worldwide. The band 1 668.4-1 675 MHz is allocated to the mobile-satellite service (MSS) on a worldwide basis. 4 Rec. ITU-R RS.1263-1 The term MetAids is used to describe a variety of types of meteorological equipment; radiosondes, dropsondes and rocketsondes. MetAids are flown worldwid
22、e for the collection of upper atmosphere meteorological data for weather forecasts and severe storm prediction, collection of ozone level data, and measurement of atmospheric parameters for various other applications. The data collected from these flights, or soundings, is of extreme importance for
23、the protection of life and property through the prediction of severe storms and providing vital data for commercial airlines operations. 2 Methodology for calculation of MetAids interference criteria Since MetAids are typically most vulnerable to interference at the maximum slant range of operation,
24、 the interference criteria will be established based on the link margin at the maximum slant range. Although this assumption does not allow other potential users of the bands the flexibility of taking advantage of the higher link margins at shorter slant ranges, this factor may be applied, if approp
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