Characteristics and performance aspects of a concept for satellite-based maritime search and rescue
Abstract
With the advent of low and synchronously orbiting satellites, a potential for alleviating the deficiencies of current Search and Rescue (SAR) techniques presents itself. Several corresponding concepts have been studied and experiments conducted. Recently, a new concept for a SAtellite-based Maritime Search And Rescue System (SAMSARS) has been proposed which provides capabilities not available in other concepts. These include the absence of a requirement for a dedicated distress channel, together with a capability for detecting many simultaneous distress transmissions. These features are accomplished via employment of spread spectrum techniques. The present paper expands on the previous work and specifies more fully the operational and technical capabilities of SAMSARS. Considerations include exploring means for incorporating a position location capability, specifying more fully a potential shore station receiver, and predicting its performance. An especially important aspect of the receiver design is the code matched filter that is central to proper system operation. Finally, the analytical results presented indicate that the distress signal may be acquired, with high probability, in less than one minute following the distress occurrence.
- Publication:
-
Satellite Applications to Marine Technology
- Pub Date:
- 1977
- Bibcode:
- 1977samt.conf...12W
- Keywords:
-
- Marine Technology;
- Maritime Satellites;
- Rescue Operations;
- System Effectiveness;
- Data Acquisition;
- Matched Filters;
- Performance Prediction;
- Position (Location);
- Satellite Transmission;
- Launch Vehicles and Space Vehicles