An Array Shape Calibration Method Based on Gibbs Sampling and Azimuth Self-focusing
As the parameter of array signal processing,the accuracy of array shape seriously affects the gain and performance of array signal processing algorithm.In order to solve the formation distortion problem of flexible array,an array shape calibration method based on Gibbs sampling and azimuth self-focusing is proposed.In this method,the array receiving model of noise source target is estab-lished,and the joint updating likelihood based on the array cross-correlation function and array covariance function is used to realize the real-time estimation of the array shape through the Gibbs sampling iteration.Finally,combined with the heading information pro-vided by the non-acoustic sensor,the array shape is rotated to match,and the relative positions of each element after array correction are obtained.The simulation results show that the method can obtain relatively accurate relative positions of the array elements after the formation correction,which has good research and reference significance.
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