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An effective technique in estimating the directions of arrival (DOAs) of incoming signals using three orthogonal sensors is proposed. The model of channel with multipath transmissions for code-division multiple access (CDMA) users whose signals are modulated with binary phase-shift keying (BPSK) is used. Utilizing the maximum-likelihood (ML) method, the channel impulse response vectors of three sensors can be estimated, then all of the corresponding propagation delays and amplitude weights ofdoi:10.1109/tvt.2002.801762 fatcat:t4rrgz5snfgltmyt5dowfjzesm