The ITU Radiocommunication Assembly considering that the number of satellites and associated uplink terminals is increasing; that the number of satellites and associated uplink terminals is increasing; that the economic aspects of satellite systems become more and more important by the installation of new applications such as radiodetennination satellite systems and fleet management; that some frequency bands used by satellites are shared with terrestrial services and the radioastronomy service; that because of the necessity for different techniques, emissions from spacecraft cannot be monitored by conventional monitoring stations.