Direction Finding In The Presence Of Mutual Coupling

An eigenstructure-based method for direction finding in the presence of sensor mutual coupling, gain and phase uncertainties is presented. The method provides estimates of the directions of arrival of all the radiating sources as well as calibration of the gain and phase of each sensor and the mutual coupling in the receiving array. Calibration sources at known locations are not required. The proposed algorithm is described in detail, and its behaviour is illustrated by a numerical example.