Experimental program and future plans for communications satellite in Japan
Abstract
Tests carried out as part of the Engineering Test Satellite Type II (ETS-II) program show that the millimeter wave band is more suitable for satellite than for terrestrial communications. Satellite communications in the 50/40 GHz frequency band are investigated, as are regenerative repeaters, multispot beam antennas, and satellite switching in TDMA and SDMA. It is found that by using extremely small earth stations, more than 20 telephone channels can be transmitted with some margins. Again with small earth stations, one TV channel can be transmitted with rain margins of about 10 dB.
- Publication:
-
Paris International Astronautical Federation Congress
- Pub Date:
- September 1982
- Bibcode:
- 1982pari.iafcQ....K
- Keywords:
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- Communication Satellites;
- Japanese Space Program;
- Mission Planning;
- Satellite Networks;
- Experiment Design;
- Millimeter Waves;
- Communications and Radar