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| TIME DELAY ESTIMATION OF GAUSSIAN SIGNAL IN NON-GAUSSIAN SPATIALLY CORRELATED NOISE |
| Liang Yingchang①; Zhang Xianda①; Li Yanda①; Zhang Peiwu② |
| ①Tsinghua University Beijing 100084;②Tangshan Coal Research Instistute Tangshan 063012 |
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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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Received: 23 October 1995
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1997, Vol. 19 
