Research on Model-Based Signal Localization Processing for Waveguide with Elastic Seabed

A localization method based on model-based processing technology is studied for wideband pulse signals in the environment with elastic seabed. Based on normal mode theory, the measurement equation is constructed using the relationship between the pressure ration of Scholte wave to normal mode and the source position. The target positioning method of model-based processing is established using the sequential Bayesian technology and particle filtering. The positioning performance of the proposed method is verified by simulation results from a shallow-water Pekeris waveguide with elastic seabed. In addition, the positioning performance of the pressure radio and vertical wave impedance as the measurement vector are simulated and analyzed respectively. Simulation results show that the source depth and the range can be correctly estimated by the two methods, and the two methods exhibit excellent positioning performance. Compared with the vertical wave impedance, the pressure radio can exhibit excellent positioning performance with less information.