YANG Dongkai, YAO Yanxin, GUO Jia. GPS Multipath Signal Estimation Based on AllPhase DFT[J]. Chinese Journal of Electronics, 2010, 19(2): 369-372.
Citation: YANG Dongkai, YAO Yanxin, GUO Jia. GPS Multipath Signal Estimation Based on AllPhase DFT[J]. Chinese Journal of Electronics, 2010, 19(2): 369-372.

GPS Multipath Signal Estimation Based on AllPhase DFT

  • Received Date: 2009-07-01
  • Rev Recd Date: 1900-01-01
  • Publish Date: 2010-04-05
  • The GPS multipath signal model is given
    and analyzed. The all phase DFT (apDFT) is proposed
    as a new spectral analysis way, which makes full use of
    (2N ¡ 1) samples to do linear transform into N point se-
    quence called all phase signal. Phase di®erence method is
    integrated with apDFT to determine the accurate signal
    frequency through calculating the two phase value for the
    two sequences' DFT result, i.e. one is from point 1 to point
    (2N ¡1) and the other is from (N +1) to (3N ¡1) separately.
    The application of the proposed method on GPS multipath
    signal estimation is analyzed, which has multiple frequen-
    cies components. Monte Carlo simulation results based on
    GPS simulator data show that the apDFT and the integra-
    tion with phase di®erence method could give the accurate
    frequency and precise phase estimation in both ideal and
    noisy environments.
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      沈阳化工大学材料科学与工程学院 沈阳 110142

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