1、 1 - Place des Nations Telephone +41 22 730 51 11 Telex 421 000 uit ch E-mail: itumailitu.int CH-1211 Geneva 20 Telefax Gr3: +41 22 733 72 56 Telegram ITU GENEVE www.itu.int Switzerland Gr4: +41 22 730 65 00 C:DOCUMENTS AND SETTINGSQGV33745MY DOCUMENTSDOWNLOADSR-QUE-SG04.272-2004-MSW-E.DOC QUESTION
2、 ITU-R 272*Frequency sharing between the FSS and the space research service in the 37.5-38 GHz and 40-40.5 GHz bands (2005) The ITU Radiocommunication Assembly, considering a) that the 37.5-38 and 40-40.5 GHz bands are allocated to the FSS; b) that the bands, or portions thereof, are also allocated
3、to the space research, fixed, mobile, Earth exploration-satellite and mobile-satellite services; c) that the band 37.5-38 GHz is shared, inter alia, between the FSS (space-to-Earth) and the space research service (SRS) (space-to-Earth) on a primary basis; d) that the band 40.0-40.5 GHz is shared, in
4、ter alia, between the SRS (Earth-to-space) and the FSS (space-to-Earth) on a primary basis; e) that the use of the band 37.5-38 GHz by the SRS may include the reception of signals at earth stations from manned Lunar-based and planetary-based stations, and from space very long baseline interferometry
5、 (S-VLBI) satellites; f) that the use of the band 40-40.5 GHz by the SRS may include the transmission of signals from earth stations for reception by manned Lunar-based and planetary-based stations, and for telecommand and precise reference signals used for S-VLBI satellites; g) that geostationary (
6、GSO) and non-geostationary (non-GSO) FSS satellite systems are expected to be introduced into the bands 37.5-38 GHz and 40-40.5 GHz, decides that the following Question should be studied 1 What are the criteria and techniques to facilitate sharing between systems operating in the SRS and the FSS in
7、the bands 37.5-38 GHz and 40-40.5 GHz? further decides 1 that the results of the above studies should be included in (a) Recommendation(s); 2 that the above studies should be completed by 2006. Category: S2 _ *This Question should be brought to the attention of Radiocommunication Study Groups 7, 8 and 9.
