Hardware-Software Optimized FFT-Based Acquisition Engine for GNSS

B. Bardak, Y. Adane, I. Kale

Abstract:	The L-band in the frequency spectrum will be very crowded in the near future with the new signals coming from new constellations and upgrades. The idea to use the multi frequency receiver encourages the use of frequency domain receivers, which can provide parallel correlation and process different signals in a common structure. The FFT can be used to search carrier code phase and frequency of GNSS signals at the same time. Frequency domain GNSS receivers utilize the FFT and IFFT to transform incoming signals and locally generated signals to the frequency domain for processing and the processed result back to the time domain. Due to these transformations inside the receiver; the computational load and the cost of a frequency based receiver becomes enormous.
Published in:	Proceedings of the 2011 International Technical Meeting of The Institute of Navigation January 24 - 26, 2011 Catamaran Resort Hotel San Diego, CA
Pages:	1019 - 1024
Cite this article:	Bardak, B., Adane, Y., Kale, I., "Hardware-Software Optimized FFT-Based Acquisition Engine for GNSS," Proceedings of the 2011 International Technical Meeting of The Institute of Navigation, San Diego, CA, January 2011, pp. 1019-1024.
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