Leasat
Abstract
The LEASAT system, which will provide worldwide communications services to land mobile, airborne, shipborne, and fixed earth stations of the U.S. Department of Defense, is analyzed. The satellite propulsion system (necessary to lift the satellite from the Space Shuttle into geosynchronous orbit) consists of a solid propellant perigee motor in the center surrounded by a liquid propellant apogee motor. The operational configuration of LEASAT is described (weight, 1,322 kg), as is the wide body solar panel (diameter, 4.3 m; length, 2.9 m). The LEASAT satellite has 12 UHF repeaters in the frequency band from 240 to 400 MHz (the channelization of these repeaters includes one 500 kHz channel, six 25 kHz channels, and five 5 kHz channels). Channel characteristics (bandwidth, EIRP, and G/T) are given, and the elements making up the ground segment of LEASAT are shown schematically.
- Publication:
-
Tokyo International Astronautical Federation Congress
- Pub Date:
- September 1980
- Bibcode:
- 1980toky.iafc.....J
- Keywords:
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- Communication Satellites;
- Satellite Design;
- Satellite Networks;
- Spacecraft Communication;
- Ground Stations;
- Maritime Satellites;
- Satellite Configurations;
- Space Shuttles;
- Spacecraft Propulsion;
- Launch Vehicles and Space Vehicles