Non-Periodic Short Spreading Sequences for GPS Puncturing, Time-Multiplexing, and Acquisition Aiding

J.M. Anderson

Abstract:	With an already crowded GPS spectrum, and the impending arrival of new signals, short pulse sequences may provide an attractive approach for augmenting GPS. Examples include puncturing of the GPS satellite signal with an acquisition-aiding pulse, and pseudolites designed to minimize interference with the primary signals. Unlike the current navigation signals, which are either very long (P-code) or short and repeating (C/A-code), pulsed signals require aperiodic correlation functions to evaluate the peak autocorrelation sidelobe and maximum crosscorrelation value. When a single pulse function is required, radar modulation techniques may be appropriate. For sets of pulse codes, recent research has resulted in techniques for developing code sets with good performance. This paper compares periodic and aperiodic correlation functions, and demonstrates results generated by combinatorial optimization.
Published in:	Proceedings of the 16th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS/GNSS 2003) September 9 - 12, 2003 Oregon Convention Center Portland, OR
Pages:	1090 - 1095
Cite this article:	Anderson, J.M., "Non-Periodic Short Spreading Sequences for GPS Puncturing, Time-Multiplexing, and Acquisition Aiding," Proceedings of the 16th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS/GNSS 2003), Portland, OR, September 2003, pp. 1090-1095.
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