MVDR algorithm for broadband coherent source signals based on data reconstruction

摘要

We proposed an algorithm for broadband signals which provide minimum variance distortionless Response(MVDR) on data reconstruction. The output of different array elements at the same time is taken as the sampling of the continuous line array based on the sampling theorem, and the data of the time domain is re-sampled. The method is used to estimate the azimuth of the broadband coherent source and a method of obtaining the focus error is proposed to analyze the performance of the MVDR algorithm of the broadband coherent source. We compared the computer simulation of the FFT interpolation method and data reconstruction method of the azimuth estimation. Results show that data reconstruction method for the broadband MVDR algorithm, has better resolution probability and lower RMS error than the FFT interpolation method.