Blind array calibration technique for uniform linear array using ICA

This paper develops a technique for estimating the array calibration matrix using signal sources with unknown direction-of-arrivals (DOAs). These signal sources can be separated by the independent component analysis (ICA). In the proposed calibration technique, the calibration matrix is estimated with these separated signal sources. Iterative estimation is employed for the estimation since DOA of the signal source is unknown. The validity of the proposed calibration technique is examined by computer simulations.