ITU-R S.483-3 SPANISH-1997
调频卫星固定业务地球同步卫星网络电视信道中,由此业务的其他网络引起的干扰最大允许值

Maximum permissible level of interference in a television channel of a geostationary-satellite network in the fixed-satellite service employing frequency modulation, caused by other networks of this service

作废

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标准号

ITU-R S.483-3 SPANISH-1997

发布

1997年

发布单位

国际电信联盟

 

 

引用标准

ITU-R BT.500 ITU-R S.354 ITU-R S.741

被代替标准

ITU-R S.483-3-1992

适用范围

The ITU Radiocommunication Assembly considering: a) that TV/FM carriers are sensitive to interference from other fwed-satellite service (FSS) carriers; b) that in particular, W/FM carriers are sensitive to interference from other W/FM carriers; c) that interference between networks in the FSS contributes to the noise in the system; d) that it is desirable that the interference noise in television channels of networks in the FSS caused by transmitters of different networks of this service should be such as to give a reasonable orbit utilization efficiency; e) that the overall performance of a network should essentially be under the control of the system designer; f) that it is necessary to protect a network in the FSS from interference by other networks of this service; g) that it is necessary to specifi the maximum permissible interference power in a television channel, in order to determine space station and earth station characteristics such as required protection ratios and minimum orbital spacing; h) that protection ratio masks are useful to determine minimum orbital spacing and in coordination exercises; j) that for direct to home (DTH) reception quality grade 4, as defined in Recommendation ITU-R BT.500, is usually adequate.

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