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《Journal of Electronics and Information Technology》 1997-05
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TIME DELAY ESTIMATION OF GAUSSIAN SIGNAL IN NON-GAUSSIAN SPATIALLY CORRELATED NOISE

Liang Yingchang Zhang Xianda Li Yanda Zhang Peiwu (Tsinghua University, Beijing 100084) (Tangshan Coal Research Instistute, Tangshan 063012)  
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 hybrid 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.
【Fund】: 国家自然科学基金;; 中国博士后科学基金
【CateGory Index】: TN911
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