Abstract:Since conventional amplitude and phase estimation(APES) algorithm cannot be applied to a non-uniform array, a vector APES(VAPES) based on vector-hydrophone is proposed. The phase difference between acoustic pressure and acoustic particle velocity received by vector-hydrophone is irrelative to the locations of sensors, thus the pressure and velocity channel can be used as two sub-arrays, and applied to non-uniform array. The array gain and its stability are analyzed. The simulations indicate that compared to conventional APES algorithm, the method can be applied to non-uniform array, and its array gain is higher; compared to minimum variance distortionless response(MVDR) algorithm, the method is more robust, can handle the coherent situation, and abtain more accrate signal power. The practical data verifies the validity of VAPES.