Striation-based source depth estimation with a vertical line array in the deep ocean

Abstract

A striation-based method with a vertical line array is proposed for source depth estimation. Broadband striation structures of direct and surface-reflected arrivals after propagating to receivers near the ocean bottom are applied. A tracking algorithm for the striation structures is proposed based on the extended Kalman filter. A cost function for source depth estimation is presented by matching the traces of the measured striations with a library of model-based traces under different source depths. The method is demonstrated on array data collected during an acoustic research experiment in the South China Sea in 2016.

A Deep-Sea Broadband Sound Source Depth Estimation Method Based on the Interference Structure of the Compensated Beam Output

“…Yang's group has completed much work on depth estimation using interference structure. They tracked the interference fringe structure of the measured direct and once-sea-surface-reflected waves and then matched them with the model library to estimate the source depth [16]. Afterward, Yang transformed the oscillation period of the interference fringes into target motion velocity and depth information [17].…”