1、4855212 0536592 985 Rec. ITU-R SA.1415 63 RECOMMENDATION ITU-R SA. 141 5 SHARING BETWEEN INTER-SATELLITE SERVICE SYSTEMS IN THE FREQUENCY BAND 25.25-27.5 GHz (Question ITU-R 225/7) (1 999) The ITU Radiocommunication Assembly, considering a) that the 25.25-27.5 GHz fiequency band is allocated to the
2、inter-satellite service, limited by No. S5.536 of the Radio Regulations to space research and earth exploration-satellite applications, and also transmission of data originating from industrial and medical activities in space; b) the 25.25-27.5 GHz band, that requirements for both data relay satelli
3、te link systems and proximity link systems have been identified for recommends 1 that proximity link systems utilize the 25.25-25.60 GHz and 27.225-27.5 GHz portions ofthe allocation and data relay satellite link systems utilize the remainder of the allocation when both systems are implemented on a common space platform; 2 that standard sharing mechanisms, such as time sharing, spatial diversity, antenna polarization and frequency diversity be used to share the allocation in other circumstances.
