A method of mutual coupling calibration based on MMUSIC

A study on the method of direction of arrival(DOA) estimation for many groups of coherent and uncorrelated sources under mutual coupling based on MMUSIC is described in this paper. The method decoherences the coherent sources by the use of MMUSIC firstly. Then, the method estimates the mutual coupling parameter of the linear array and the DOA of every signal using minimal optimization function. The method improves the utilization rate of the array. At the same time, it has a high accuracy. The performance of many relevant algorithms is compared by simulations, the effectiveness and accuracy of the proposed algorithm is verified.