Robust Capon-based direction-of-arrival estimators in partly calibrated sensor array

In this paper a problem of direction-of-arrival (DOA) estimation in partly calibrated sensor arrays is considered. It is assumed that a sensor array consists of subarrays with full inner calibration and unknown intersubarray distortions. Capon-based methods are proposed for DOA estimation as suitable techniques have robustness to intersubarray distortions. These methods are an extension of robust Capon beamformer developed for partly calibrated array to the DOA estimation. The simulations validate efficiency of the proposed algorithms.