A novel approach for the SARSAT system

A novel method for determining the location of a 406-MHz emergency locator transmitter (ELT) for the search and rescue satellite aided tracking (SARSAT) system is proposed. The technique uses information from a geostationary satellite (Geosat) link, as well as the conventional polar orbiting satelli...

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Bibliographic Details
Published in:IEEE transactions on aerospace and electronic systems 1991-03, Vol.27 (2), p.290-301
Main Authors: Vrckovnik, G., Carter, C.R.
Format: Article
Language:English
Subjects:
Aircraft
Applied sciences
Equations
Exact sciences and technology
Extraterrestrial measurements
Frequency estimation
Frequency measurement
Global Positioning System
Orbits
Radio transmitters
Radiocommunications
Satellite broadcasting
Satellite ground stations
Telecommunications
Telecommunications and information theory
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Summary:A novel method for determining the location of a 406-MHz emergency locator transmitter (ELT) for the search and rescue satellite aided tracking (SARSAT) system is proposed. The technique uses information from a geostationary satellite (Geosat) link, as well as the conventional polar orbiting satellite links. The method is based on solving a system of equations to determine the range from the ELT to the polar orbiting satellite (Polarsat) for each signal transmitted. Only two pulses need to be received from the ELT in order to obtain a location estimate. The main difference between the procedure outlined and the global positioning system (GPS) is that accurate time information is not available in the transmissions since aircraft and marine vessels seldom have accurate time standards onboard.< >
ISSN:0018-9251
1557-9603
DOI:10.1109/7.78304