Test results of the L-band satellite EPIRB system and the future test
Abstract
The data transmission characteristics from a simulation test and sea trials of the satellite EPIRB (Emergency Positioning Indicating Radio Beacon) system using an FSK asynchronous detection and a signal superposition technique are described. The results show that the EPIRB system can, under practical conditions, transmit a distress message within 150 sec with a transmission power of 1 watt. The effectiveness of the signal superposition for bit error rate improvement is confirmed; the effect of superposition is close to that in a Rayleigh fading case. There are burst errors of 5-7 bits at a high C/No. It is concluded that the Japanese L-band satellite EPIRB system can be a candidate for an international system.
- Publication:
-
Stockholm International Astronautical Federation Congress
- Pub Date:
- October 1985
- Bibcode:
- 1985stoc.iafcW....H
- Keywords:
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- Maritime Satellites;
- Radio Beacons;
- Rescue Operations;
- Satellite Transmission;
- Spacecraft Position Indicators;
- Ultrahigh Frequencies;
- Bit Error Rate;
- Computerized Simulation;
- Frequency Shift Keying;
- Reception Diversity;
- Signal Transmission;
- Superposition (Mathematics);
- Synchronous Satellites;
- Space Communications, Spacecraft Communications, Command and Tracking