A DOA estimation algorithm of virtual array based on beam forming

Virtual Array Transformation of DOA Algorithm is widely used in actual engineering DOA estimation of the uniform linear array (ULA) of spacing of array elements greater than half a wavelength or any non-uniform linear array (NULA). However, when virtual array is transformed, if there is a signal outside the current transformation sensor, a serious impact will be had on virtual array DOA estimation performance of the signal in the current transformation interval. In this paper, a virtual array transformation algorithm is proposed based on beam forming methods, which can effectively solve the existing problems of traditional virtual array transformation algorithms, and the mathematical model and test simulation results of the algorithm are given.