A simple method for depth estimation of a sound source at known range in the deep sea

Based on the distribution of acoustic intensity at different depths at a fixed distance, a simple method is proposed to estimate the sound source depth at known range in the deep sea. First, the method calculates the acoustic intensity distribution of all the depths at a receiving distance. Second, the depths with the strongest acoustic intensity are selected. Sound sources are set at the selected depths to calculate the transmission loss (TL) at the same distance through the acoustic model, and the depth of the minimum superimposed TL is considered as the depth of the original sound source. The simulation and experiment verify the feasibility and reliability of the method.