Pre- and Post-Correlation Methods for Acquisition of New GNSS Signals with Secondary Code

Jirí Svaton, František Vejražka

Abstract:	Correlation of GNSS signals that is implemented into a block processing by help of a FFT allows using and evolving of methods that has never been used before in a traditional continual processing. Our contribution focuses on utilization of a block pre-correlation processing for an acquisition of modern GNSS signals. This method combines the parallel in code search (PCS) algorithm with the Pre-Correlation Averaging (PCA) method for an acquisition of a secondary code of GNSS signals. The PCA method is working with samples of consecutives signal periods and averages them together period-by-period coherently to allow using a longer coherent time without additional costs in a correlation stage and without boost of the FFT unit size.
Published in:	2018 IEEE/ION Position, Location and Navigation Symposium (PLANS) April 23 - 26, 2018 Hyatt Regency Hotel Monterey, CA
Pages:	1422 - 1427
Cite this article:	Svaton, Jirí, Vejražka, František, "Pre- and Post-Correlation Methods for Acquisition of New GNSS Signals with Secondary Code," 2018 IEEE/ION Position, Location and Navigation Symposium (PLANS), Monterey, CA, April 2018, pp. 1422-1427. https://doi.org/10.1109/PLANS.2018.8373535
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