STUDY OF CAPON METHOD FOR ARRAY SIGNAL-PROCESSING

The mean-square error (MSE) of Capon estimate of the directions-of-arr ival (DOA) is established in the narrowband array processing case. An improved Capon-like DOA estimator is proposed and its MSE is studied a s well. Performance comparisons between the standard and improved Capo n DOA estimates, and between these two estimates and the linear predic tion DOA estimate, are performed. It is concluded that the improved Ca pon-like method introduced in this paper provides more accurate DOA es timates in most cases.