A new FOA estimation method in SAR/GALILEO system

Gang Liu; Bing He; Jilin Li

doi:10.1117/12.775232

10 November 2007 A new FOA estimation method in SAR/GALILEO system

Gang Liu, Bing He, Jilin Li

Proceedings Volume 6795, Second International Conference on Space Information Technology; 679566 (2007) https://doi.org/10.1117/12.775232
Event: Second International Conference on Spatial Information Technology, 2007, Wuhan, China

Abstract

The European Galileo Plan will include the Search and Rescue (SAR) transponder which will become part of the future MEOSAR (Medium earth orbit Search and Rescue) system, the new SAR system can improve localization accuracy through measuring the frequency of arrival (FOA) and time of arrival (TOA) of beacons, the FOA estimation is one of the most important part. In this paper, we aim to find a good FOA algorithm with minimal estimation error, which must be less than 0.1Hz. We propose a new method called Kay algorithm for the SAR/GALILEO system by comparing some frequency estimation methods and current methods using in the COAPAS-SARSAT system and analyzing distress beacon in terms of signal structure, spectrum characteristic. The simulation proves that the Kay method for FOA estimation is better.

Citation Download Citation

Gang Liu, Bing He, and Jilin Li "A new FOA estimation method in SAR/GALILEO system", Proc. SPIE 6795, Second International Conference on Space Information Technology, 679566 (10 November 2007); https://doi.org/10.1117/12.775232

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