Galileo Primary Code Acquisition Based on Multi-hypothesis Secondary Code Ambiguity Elimination

Giovanni E. Corazza, Claudio Palestini, Raffaella Pedone, and Marco Villanti

Abstract:	This paper addresses the problem of primary code acquisition for the Galileo E1 signal in challenging environments. The detector sensitivity is augmented by extending the observation window up to several primary code periods. A novel solution is proposed to cope with the secondary code ambiguity, based on the enumeration of all possible secondary chips sign combinations and exploiting an optimized parallel architecture. Performance is presented in terms of Receiver Operating Characteristics (ROC) and Mean Acquisition Time (MAT), obtained through simulation and analytical results. The paper shows that the proposed scheme is able to introduce an interesting improvement, limiting at the same the complexity increase.
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:	2459 - 2465
Cite this article:	Corazza, Giovanni E., Palestini, Claudio, Pedone, Raffaella, Villanti, Marco, "Galileo Primary Code Acquisition Based on Multi-hypothesis Secondary Code Ambiguity Elimination," 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. 2459-2465.
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