T. Zhang, Y. Lu (Singapore), and H.T. Hui (Australia)
Mutual coupling, direction of arrival, least square method.
A structured Least Square (LS) method for simultaneous estimation of the mutual coupling matrix (MCM) and di rection of arrival (DOA) of signal source is proposed in this paper. Mutual coupling effects are modelled in the form of a complex Toeplitz matrix. The DOAs and MCM can be si multaneously estimated by the proposed method when the observations of at least two different DOAs are available. This method is especially useful for the calibration of uni form linear array (ULA) and uniform circular array (UCA). Simulation results confirm the efficiency of the proposed method.
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