Optimizational Algorithms for Source Parameters with Single Hydrophone in Shallow Water

Though analyzing the characteristics of normal modes in complex marine environments, this paper proposes a modal selection method in source motion parameters estimating technique based on broadband interference structures with single hydrophone. By extracting the normal modes that play a significant role in the interference structure, the suitability of motion parameter estimation algorithm in complex marine environments is greatly improved. In numerical simulations, the excellent applicability of the optimization algorithm in shallow sea waveguides with negative sound speed gradient profile and elastic seabed condition is verified. Finally, the applicability of the optimized algorithm in complex marine environments is verified by experimental data from sea areas with elastic seabed. The estimated values of radial velocity and initial distance are in good agreement with the actual parameters of the ship.