ITU-R S 1069-1994 Compatibility between the Fixed-Satellite Service and the Space Science Service in the Band 13 75-14 GHz《13 75-14GHz频段固定卫星业务和空间科学业务之间的兼容性》.pdf
《ITU-R S 1069-1994 Compatibility between the Fixed-Satellite Service and the Space Science Service in the Band 13 75-14 GHz《13 75-14GHz频段固定卫星业务和空间科学业务之间的兼容性》.pdf》由会员分享,可在线阅读,更多相关《ITU-R S 1069-1994 Compatibility between the Fixed-Satellite Service and the Space Science Service in the Band 13 75-14 GHz《13 75-14GHz频段固定卫星业务和空间科学业务之间的兼容性》.pdf(4页珍藏版)》请在麦多课文档分享上搜索。
1、ITU-R RECMNxS. LO69 74 S 4855232 0523487 Tb7 Rec. ITU-R S.1069 433 RECOMMENDATION ITU-R S. 1069 COMPATIBILITY BETWEEN THE FIXED-SATELLITE SERVICE AND THE SPACE SCIENCE SERVICES IN THE BAND 13.75-14GHz (Question ITU-R 80/4) ( 1994) The ITU Radiocommunication Assembly, considering a) that the World Ad
2、ministrative Radio Conference for Dealing with Frequency Allocations in Certain Parts of the Spectrum (Malaga-Torremolinos, 1992) (WARC-92) allocated the frequency band 13.75-14 GHz to the fixed-satellite service (FSS) on a primary basis; b) that this band is also allocated to the space research ser
3、vice on a secondary basis and may also be employed by the Earth exploration-satellite and space research services on a secondary basis for radiolocation stations installed on spacecraft; c radionavigation services in order to allow these services to share this band; d) that RR No. 855B provides for
4、geostationary space stations in the space research service, for which information for advance publication has been received by the ex-IFRB prior to 3 1 January 1992, to operate on an equal basis with stations in the FSS; that No. 855A of the Radio Regulations (RR) places restrictions on the fixed-sa
5、tellite, radiolocation and e) services are to be protected until 1 January 2000 in accordance with RR No. 855B; f) services, to take certain steps to provide protection to them; that non-geostationary-satellite orbit (GSO) space stations in the space research and Earth exploration-satellite that unt
6、il 1 January 2000 it is necessary for FSS users, in order to be compatible with the space science g) that the permissible levels of interference for the current space services are specified in Annex 2 of Recommendation ITU-R SA.1071. These should be applied until 1 January 2000 when considering spec
7、ific sharing situations; h) that Recommendation ITU-R SA.1071 states that there is a need to extend, beyond 1 January 2000, protection to the links from a data relay satellite in the band 13.772-13.778 GHz in support of space research and Earth exploration- satellite missions; j) that, whilst non-GS
8、O science service space stations intended for use beyond 1 January 2000 should be designed for operation outside of the band 13.75-14 GHz, unforeseen circumstances may create the need for individual stations to operate within this band after that date, on a secondary basis and without the regulatory
9、 protection from FSS emissions afforded before that date; k) those given in Annex 1; 1) designed to operate at frequencies outside the 13.75-14 GHz band; m protection period is likely to be fairly severe, that maximum pfd levels likely to be produced at the GSO by space stations in the space science
10、 services are that it would be desirable for future data relay satellite networks operating in the space science services to be that the interference environment for space science services continuing to operate in the band after the recommends that to protect spaceborne altimeters from unacceptable
11、interference until 1 January 2000, the follow , F i. consultative steps should be taken: 1.1 upon publication of the RR Appendix 4 information of an FSS network intending to use the 13.75-14 GHz band, the administration with a spaceborne altimeter in the band should inform the notifying administrati
12、on of the geographic constraints, if any, which may affect the location of earth stations in the FSS network; ITU-R RECMNrS. LO69 94 M 4855232 0523488 9T3 Rec. ITU-R S.1069 434 1.2 system about the location(s) of proposed earth stations in the network, that would not meet the geographic constraints;
13、 the FSS network operator should review the information above and advise the operator of the spaceborne 1.3 spaceborne altimeter; the consultation should then focus on these earth stations in order to ensure the protection required by the 2. that to protect spaceborne scatterometers using fan beams
14、from unacceptable interference until 1 January 2000, FSS earth stations should not exceed an e.i.r.p. density toward the scatterometer orbit over the oceans of 25 dBW in any 2 kHz band between 13.99356 GHz and 13.99644 GHz. To meet this condition it may be advisable to avoid operation between these
15、frequencies. Exceptionally, on a case-by-case basis the avoidance of unacceptable interference may be accomplished through consultation; 3. that to protect spaceborne precipitation radars from unacceptable interference: 3. 1 until 1 January 2001 3.1.1 600 kHz band between 13.793 GHz and 13.805 GHz;
16、the e.i.r.p. density of any FSS earth station at a latitude between f 55“ should not exceed 61 dBW in any 3.1.2 the elevation angle of any FSS earth station using the band 13.75-14 GHz should not exceed 71 O; 3.2 until i January 2000, implementation of individual FSS earth stations planned to use th
17、e band 13.75-13.86 GHz at latitudes between f 40“ will require consultation on a case-by-case basis, in order to ensure that the appropriate protection is given (see Note i); 3.3 whenever practicable the appropriate protection is given (see Note 1); the consultation process in 0 3.2 should be extend
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