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Volume 35 Issue 7
Jul.  2009
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Journal of Beijing University of Aeronautics and Astronautics  > 2009  >  35(7): 828-832.
Zhu Di, Shen Gongxun. BOC signal multi-path mitigation technique based on wavelet analysis[J]. Journal of Beijing University of Aeronautics and Astronautics, 2009, 35(7): 828-832. (in Chinese)
Citation: Zhu Di, Shen Gongxun. BOC signal multi-path mitigation technique based on wavelet analysis[J]. Journal of Beijing University of Aeronautics and Astronautics, 2009, 35(7): 828-832. (in Chinese)
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BOC signal multi-path mitigation technique based on wavelet analysis

  • School of Astronautics, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

  • Received Date: 17 Jun 2008
  • Publish Date: 31 Jul 2009
    Abstract
  • Satellite navigation receives requires to tracking code phase of satellite-s signals precisely because it affects the precision of pseudo-range directly. However, the multi-path effect introduces quite big errors to the traditional delay locked loop(DLL)-based estimators. An algorithm of multi-path mitigation by the method of wavelet analysis was proposed. The algorithm was formulated in detail. Simulation shows that it greatly improves the estimation performance of code phase compared with narrow correlator and double delta technique. Under certain extreme condition, this technique is equivalent to correlator method when Harr wavelets are adopted. The computation complexity is much lower than multipath mitigating technique(MMT) technique which is based on mostly likelihood method.

     

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  • [1] Van Dierendonck A J, Fenton P, Ford T. Theory and performance of narrow correlator spacing in a GPS receiver[J].Journal of the Institute of Navigation,1992, 39(3):34-41 [2] Garin L, Van Diggelen F, Rousseau J. Strobe and edge correlator multipath mitigation for code Proceedings of ION GPS-96. Kansas City: Institute of Navigation, 1996: 657-664 [3] Weill L R. GPS multipath mitigation by means of correlator reference waveform design Proceedings of the ION 1997 National Technical Meeting. Santa Monica, CA: Institute of Navigation, 1997:197-206 [4] Weill L. Multipath mitigation using modernized GPS signals: how good can it get ION GPS 2002. Portland, Oregon: Institute of Navigation, 2002: 24-27 [5] Weill L R. Application of super resolution concepts to the GPS receiver of multipath mitigation problem Proceedings of the ION 1998 National Technical Meeting. Long Beach, CA: Institute of Navigation, 1998: 673-682 [6] Irsigler M, Avila-Rodriguez J-A, Hein G. Criteria for GNSS multipath performance assessment Proceedings of ION GNSS 2005. Long Beach, CA: Institute of Navigation, 2005:104-108 [7] Jones J, Fenton P, Smith B. Theory and performance of the pulse aperture correlator . Calgary, Alberta, Canada: NovAtel Technical Report, NovAtel, Inc, 2004 . www.novatel.com/Documents/Papers/PAC.pdf
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