space radiocommunication service in which:
– information relating to the characteristics of the Earth and its natural phenomena is obtained from active or passive sensors on Earth satellites;
– similar information is collected by an Earth satellite from airborne or Earth-based platforms which transmit automatically or by interrogation;
– such information may be distributed to Earth stations
NOTE – This radiocommunication service may also include feeder links necessary for its operation and intersatellite links.
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