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Reduced-Size FFT Correlation Techniques for GPS Signal Acquisition

Published on None 2011 by Vandana Patel
journal_cover_thumbnail

Evolution in Networks and Computer Communications
Foundation of Computer Science USA
ENCC - Number 2
None 2011
Authors: Vandana Patel
19e4f253-9c8f-4c92-b7c0-c5dfd895d870

Vandana Patel . Reduced-Size FFT Correlation Techniques for GPS Signal Acquisition. Evolution in Networks and Computer Communications. ENCC, 2 (None 2011), 14-19.

@article{
author = { Vandana Patel },
title = { Reduced-Size FFT Correlation Techniques for GPS Signal Acquisition },
journal = { Evolution in Networks and Computer Communications },
issue_date = { None 2011 },
volume = { ENCC },
number = { 2 },
month = { None },
year = { 2011 },
issn = 0975-8887,
pages = { 14-19 },
numpages = 6,
url = { /specialissues/encc/number2/3722-encc011/ },
publisher = {Foundation of Computer Science (FCS), NY, USA},
address = {New York, USA}
}
%0 Special Issue Article
%1 Evolution in Networks and Computer Communications
%A Vandana Patel
%T Reduced-Size FFT Correlation Techniques for GPS Signal Acquisition
%J Evolution in Networks and Computer Communications
%@ 0975-8887
%V ENCC
%N 2
%P 14-19
%D 2011
%I International Journal of Computer Applications
Abstract

Signal acquisition is the primary step in a GPS receiver. In this paper, frequency-domain methods of GPS L1 signal acquisition are proposed that use reduced number of FFT points to perform circular correlation for faster as well as reliable acquisition. The possibility of reduction has been considered by analyzing the spectrum of C/A code alone. Simulation of various FFT sizes are carried out on MATLAB and the results are verified by those obtained from the GPS Signal Tap Receiver. Besides, the performances of reduced-size FFT correlation techniques are compared and evaluated using different lengths of noncoherent pre-integration period.

References
  1. Dinesh Manandhar, Yongcheol Suh and Ryosuke Shibasaki, “GPS Signal Acquisition and Tracking: An Approach towards Development of Software-based GPS Receiver,” Technical Report of IEICE.
  2. James Bao-Yen Tsui, Fundamentals of Global Positioning System Receivers, John Wiley and Sons, ISBN 0-471-38154-3, 2000.
  3. Sophia Y. Zheng, “Signal Acquisition And Tracking For A Software GPS Receiver”, Master of Science Thesis, Blacksburg, Virginia, February, 2005.
  4. Guoliang Zhu, Xiaohui Chen, “An Improved Acquisition Algorithm for GPS Signals,” Jan. 2010, Volume 7, No.1 (Serial No.62), Journal of Communication and Computer, ISSN 1548-7709, USA.
  5. Accord GPS Signal Tap User’s Guide, Accord Software & Systems Private Limited, Bangalore, India, April 2004.
Index Terms

Computer Science
Information Sciences

Keywords

GPS Signal acquisition C/A code FFT Circular correlation MATLAB