Implementation, Verification and Test Results of a MLE-based F-Correlator Method for Multi-Frequency GNSS Signal Trackings

Jong-Hoon won, Thomas Pany, and Bernd Eissfeller

Abstract:	In this paper an implementation, verification and test results of MLE based Doppler frequency tracking method, so called F-correlator, are presented for multi-frequency GNSS signal trackings. Direct use of MLE-based F-correlator method to the received signal model is based on a new cost function for carrier Doppler tracking and makes it possible to use a various kind of estimation techniques. The MLE solutions both for code delay and carrier phase contain only a computation of normal form of baseband I and Q values while that for Doppler frequency requires a computation of time index k inside of coherent integration and dump process, thereby producing a different form of baseband I and Q values. Test results show that the MLE algorithms in this paper provided a superior performance to the conventional method specially in high dynamic cases.
Published in:	Proceedings of the 20th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2007) September 25 - 28, 2007 Fort Worth Convention Center Fort Worth, TX
Pages:	2237 - 2249
Cite this article:	won, Jong-Hoon, Pany, Thomas, Eissfeller, Bernd, "Implementation, Verification and Test Results of a MLE-based F-Correlator Method for Multi-Frequency GNSS Signal Trackings," Proceedings of the 20th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2007), Fort Worth, TX, September 2007, pp. 2237-2249.
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