Research on high-resolution direction-of-arrival estimation based on an acoustic vector-hydrophone

In order to increase the resolving power for only using a single acoustic vector-sensor, the MUSIC algorithm is applied to the DOA (direction of arrival) estimation. Taking into account the characteristic of single coustic vector-sensor, the high-resolution DOA estimation based on subspace decomposing theory is realized. According to the problem apprearing in the application, the improved algorithm is advanced. Simulation indicates that the result using the algorithm achieves the high-resolution DOA estimation whether narrowband or wideband signal with theirs information unknown and obtains the gradually agonic estimation without bias when the SNR (signal-to-noise ratio) is high. The result of processing data testifies to the validity of improved algorithm.