1、 QUESTION ITU-R 232-1/7*,*Frequency sharing between spaceborne passive sensors and other services in the bands 10.60-10.68 GHz, 31.5-31.8 GHz and 36-37 GHz (2000-2002) The ITU Radiocommunication Assembly, considering a) that the bands 10.60-10.68 GHz, 31.5-31.8 GHz and 36-37 GHz are allocated on a p
2、rimary basis to the Earth exploration-satellite service (passive); b) that the band 10.60-10.68 GHz is also allocated on a primary basis to the fixed and mobile services with limits on transmission characteristics in some countries as given in RR 5.482; c) that the band 31.5-31.8 GHz is also allocat
3、ed on a secondary basis to the fixed and mobile services in Regions 1 and 3 with some countries within Region 1 allocating the band to the fixed and mobile services on a primary basis as given in RR 5.546; d) that the band 36-37 GHz is also allocated on a primary basis to the fixed and mobile servic
4、es; e) that the band 10.60-10.68 GHz is essential for land and sea surface temperature, soil moisture, wind intensity and precipitation over the sea (in combination with the other windows between 1 and 40 GHz); f) that the band 31.5-31.8 GHz is essential for determining the surface temperature of th
5、e Earth and will be jointly used with the 50 to 60 GHz bands for temperature sounding of the atmosphere; g) that the band 36-37 GHz is essential for the study of the global water cycle; h) that the performance and interference criteria for satellite passive sensing are contained in Recommendations I
6、TU-R SA.1028 and ITU-R SA.1029, decides that the following Question should be studied 1 What are the technical and operational characteristics of passive spaceborne sensor systems in this band? 2 What are the criteria by which passive spaceborne sensor systems can share with other services in the ba
7、nds 10.60-10.68 GHz, 31.5-31.8 GHz and 36-37 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 2011. _ *In the year 2009, Radiocommunication Study Group 7 extended the completion date of studies for this Question. *This Question should be brought to the attention of Radiocommunication Study Groups 8 and 9.
