A Matched Beam Intensity Processing Method for Estimating Source Depth using Vertical Linear Array in Deep Water

Since the bottom vertical short array deployed in the deep sea has the advantage of strong concealment, this paper proposes a matched beam intensity processing method adapted to the bottom vertical array for the estimation of the depth of the deep sea source, derives the relationship between vertical array beamforming and source range and depth based on the principle of Lloyd mirror interference, and reveals the tracking beam space fluctuation caused by source depth modulation. This paper proposes a deep-sea source depth estimation method based on beam intensity matched. The source depth estimation is realized by matched tracking beam fluctuation of data and tracking beam fluctuation of copy field. Based on simulation data, the effectiveness of the method of using vertical array data to match beam intensity to estimate the source depth is verified, and the depth estimation algorithm is verified based on the sea trial data of a deep sea area.