Research on the motion track correction algorithm of underwater noise source

摘要

For motion track errors in the measurement of underwater noise sources, utilized MUSIC near-field focused beamforming correcting the sound source trajectory, established measurement model based on the algorithm of near-field focused beamforming. MUSIC algorithm is based on the characteristics decomposition of the covariance matrix to obtain the noise subspace and the signal subspace corresponding to signal components, and achieve DOA estimation using the two-orthogonal subspace. Through numerical simulations obtaining the following conclusions: After utilizing the modified data reconstructing the sound field, the amplitude reconstructive accuracy and phase reconstructive accuracy have all exist different improvements, which proved the correctness and effectiveness of the algorithm.