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非高斯相關(guān)噪聲中高斯信號的時延估計

梁應(yīng)敞,  張賢達(dá),  李衍達(dá),  張沛武

梁應(yīng)敞, 張賢達(dá), 李衍達(dá), 張沛武. 非高斯相關(guān)噪聲中高斯信號的時延估計[J]. 電子與信息學(xué)報, 1997, 19(5): 606-612.
引用本文: 梁應(yīng)敞, 張賢達(dá), 李衍達(dá), 張沛武. 非高斯相關(guān)噪聲中高斯信號的時延估計[J]. 電子與信息學(xué)報, 1997, 19(5): 606-612.
Liang Yingchang, Zhang Xianda, Li Yanda, Zhang Peiwu. TIME DELAY ESTIMATION OF GAUSSIAN SIGNAL IN NON-GAUSSIAN SPATIALLY CORRELATED NOISE[J]. Journal of Electronics & Information Technology, 1997, 19(5): 606-612.
Citation: Liang Yingchang, Zhang Xianda, Li Yanda, Zhang Peiwu. TIME DELAY ESTIMATION OF GAUSSIAN SIGNAL IN NON-GAUSSIAN SPATIALLY CORRELATED NOISE[J]. Journal of Electronics & Information Technology, 1997, 19(5): 606-612.

非高斯相關(guān)噪聲中高斯信號的時延估計

TIME DELAY ESTIMATION OF GAUSSIAN SIGNAL IN NON-GAUSSIAN SPATIALLY CORRELATED NOISE

  • 摘要: 高階統(tǒng)計量在信號處理中成功的應(yīng)用例子之一是估計高斯相關(guān)噪聲中非高斯信號的時延參數(shù).本文則研究非高斯相關(guān)噪聲中高斯信號的時延估計問題,提出了一種解決該問題的混合方法.該方法先計算觀測值的三階累積量,然后利用累積投影公式計算觀測噪聲的二階統(tǒng)計量,最后利用互相關(guān)方法確定信號時延參數(shù).仿真結(jié)果驗證了該方法的有效性.
    Abstract: One of the primary applications of higher order statistics has been for the time delay estimation of non-Gaussian signal in Gaussian spatially correlated noise. This paper studies the time delay estimation of Gaussian signal in the presence of unknown non-Gaussian spatially correlated noise. A hbrid approach for solving this problem is proposed. First, the third-order statistics of the measurements, thus those of the non-Gaussian noises are estimated; then the second-order statistics of the noises are computed by statistics projection; finally, cross-correlation based approaches are used to estimate time delay parameter. Simulation examples are also presented to demonstrate the effectiveness of the new approach.
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  • Nikias C L, Pan R. Time delay estimation in unknown Gaussian spatially correlated noise. IEEE Trans. on ASSP, 1988, ASSP-36(11): 1706-1714.[2]Chiang H H, Nikias C L. A new method for adaptive time delay estimation for non-Gaussian signals. IEEE Trans. on ASSP, 1990, ASSP-38(2): 209-219.[3]Hinich M J, Wilson G R. Time delay estimation using the cross bispectrum. IEEE Trans. on SP, 1992, SP-40(1): 106-113.[4]Tugnait J K. On time delay estimation with unknown spatially correlated Gaussian noise using fourth-order cumulants and cross cumulants. IEEE Trans. on SP, 1991, SP-39(6): 1258-1267.[5]Hinich M J, Marandpao D, Sullivan E J. Bispectrum of ship-radiated noise[J].J. Acoust. Soc. Amen.1989,85(4):1512-1517[6]Kassam S A. Signal Detection in Non-Gaussian Noise, New York: Springer-Verlag, 1988, Ch. 2.[7]Wegmaen E J, Thomas J B, Schwartz C C. Eds, Topics in Non-Gaussian Signal Processing, New York: Springer-Verlag, 1989, 2-16.[8]Carter G C. IEEE Trans. on ASSP, 1981, ASSP-29(3): 463-420.[9]Sadler B M, Giannakis G B, Lii K S. Estimation and detection in non-Ganssian noise using higher order statistics. IEEE Trans. on SP, 1994, SP-42(10): 2729-2741.[10]Chan Y T, Riley J M, Plant J B. A parameter estimation approach to time-delay estimation and signal detection. IEEE Trans. on ASSP, 1980, ASSP-28(2): 8-16.
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出版歷程
  • 收稿日期:  1995-10-23
  • 修回日期:  1996-01-04
  • 刊出日期:  1997-09-19

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