The ITU Radiocommunication Assembly considering a)that the data transmission characteristics of Earth exploration-satellite systems, frequencies and bandwidths, and performance, interference and frequency sharing criteria are established by Recommendations ITU-R SA.514, ITU-R SA.1024, ITU-R SA.1025, ITU-R SA.1026 and ITU-R SA.1027;b)that these systems may require very high transmission rates.