1、 Recommendation ITU-R BO.1443-3(12/2013)Reference BSS earth station antenna patterns for use in interference assessment involving non-GSO satellites in frequency bands covered by RR Appendix 30BO SeriesSatellite deliveryii Rec. ITU-R BO.1443-3 Foreword The role of the Radiocommunication Sector is to
2、 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 adopted. The regulatory and policy function
3、s 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 Policy for ITU-T/ITU-R/ISO/IEC referenc
4、ed 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 for ITU-T/ITU-R/ISO/IEC and the ITU-
5、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 service (sound) BT Broadcasting servi
6、ce (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 coordination between fixed-satellite and
7、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 1. Electronic Publication Geneva, 201
8、3 ITU 2013 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without written permission of ITU. Rec. ITU-R BO.1443-3 1 RECOMMENDATION ITU-R BO.1443-3 Reference BSS earth station antenna patterns for use in interference assessment involving non-GSO satellite
9、s in frequency bands covered by RR Appendix 30*(Question ITU-R 280/4) (2000-2002-2006-2013) Scope This Recommendation intends to provide tri-dimensional reference earth station antenna patterns for the broadcasting-satellite service (BSS) that can be used for the calculation of interference generate
10、d by non-GSO FSS satellites into BSS earth station antennas. Keywords Gain pattern, GSO, BSS. Abbreviations/Glossary The gain pattern is defined in the form: Gain = G(,) where: : off-axis angle of the antenna relative to boresight (degrees) : planar angle of the antenna (degrees) (0 azimuth is the h
11、orizontal plane). Related ITU Recommendations, Reports Recommendation ITU-R S.672-4 Satellite antenna radiation pattern for use as a design objective in the fixed-satellite service employing geostationary satellites Recommendation ITU-R S.1428-1 Reference FSS earth-station radiation patterns for use
12、 in interference assessment involving non-GSO satellites in frequency bands between 10.7 GHz and 30 GHz Recommendation ITU-R S.1503-1 Functional description to be used in developing software tools for determining conformity of non-geostationary-satellite orbit fixed-satellite system networks with li
13、mits contained in Article 22 of the Radio Regulations *The basis for the patterns contained in this Recommendation, including the methodology for analysing and plotting the data which measures the goodness of fit of the data sets to the recommended pattern are contained in Report ITU-R BO.2029 Broad
14、casting-satellite service earth station antenna pattern measurements and related analyses. This Report along with the raw data sets and the spread sheets used to perform the graphical analysis are contained on a CD-ROM available from ITU. 2 Rec. ITU-R BO.1443-3 The ITU Radiocommunication Assembly, c
15、onsidering a) that for earth station antennas in the BSS the reference antenna radiation patterns for GSO BSS receive antennas in Annex 5 to RR Appendix 30 were used to develop the BSS Plans and prescribe a reference radiation pattern which represents an envelope of the side lobes; b) that such refe
16、rence radiation patterns are necessary for interference calculations involving fixed or transportable BSS receivers and GSO satellites to ensure adequate protection of the BSS Plans; c) that in circumstances where there are multiple interfering sources whose positions vary substantially with time, t
17、he level of interference received inevitably depends on the troughs as well as the peaks in the gain pattern of the victim BSS earth station antenna; d) that for BSS earth stations, suitable reference radiation patterns are needed for use in assessing interference from non-GSO FSS systems; e) that t
18、o facilitate computer simulations of interference, the reference patterns should cover all off-axis angles from 0 to 180 in all planes; f) that the reference patterns should be consistent with the results of measurements on a wide range of consumer BSS earth station antennas; g) that it is appropria
19、te to establish different reference patterns for different ranges of antenna sizes; h) that the patterns may exhibit characteristics that may be important when modelling non-GSO interference, for example in the case of small offset-fed antennas, recommends 1 that for calculations of interference gen
20、erated by non-GSO FSS satellites into BSS earth station antennas, the reference earth station antenna radiation patterns described in Annex 1 should be employed; 2 that the methodology described in Annex 2 be used to convert the relative azimuth and elevation angle of the non-GSO satellite under inv
21、estigation into the same coordinate system as employed for the three-dimensional antenna pattern; 3 that the following Notes be considered part of this Recommendation: NOTE 1 The cross-polarization radiation pattern may be of importance in non-GSO interference calculations. This issue requires furth
22、er study. NOTE 2 This Recommendation is based on measurements and analysis of paraboloid antennas. If new earth station antennas are developed or are considered for use in the BSS, the reference antenna patterns in this Recommendation should be updated accordingly. Rec. ITU-R BO.1443-3 3 Annex 1 Ref
23、erence BSS antenna radiation patterns For 11 D/ 25.5 for 0 100 G() = Gmax 2.5 103(D/)2dBi for 0 0 and B 0 and B 90) = 450 B if (Az GrSrNrGSGSrrr =GNGNrrr =Gr8 Rec. ITU-R BO.1443-3 Then the elevation angles are: To calculate the difference in azimuth, convert vectors from earth station to GSO/non-GSO to be in the horizontal plane that is perpendicular to the zenith vector, i.e. Then: The sign of will be the same as the sign of the difference in longitude of the two satellites. ),(90GGSSrrel =),(90GGNNrrel =()GGSGGSGSrrrrr =()GGNGGNGNrrrrr =),(GNGSrrAz =Az
