Research on acoustic inverted algorithms to allow effectively estimate underwater sound speed data and some seabed parameters in shallow water

Abstract

Theory of Inverted acoustic plays a significant role in estimating geo-acoustic and environmental parameters (e.g source and receiver location, sea deeth, sound speed profiles, seabed densities, seabed attenuation and thickness). These parameters are essential in constructing a set of underwater acoustic data to managing, localization underwater targets in shallow water. In VietNam, with long beach and big continental area, doing experiments on the whole area of Vietnamese sea is very difficult and expensive, especially coring, measuring sound speed and attenuation in sediments, etc. So that besides direct measurement of these parameters, we also apply a suitable and optimization inverted acoustic algorithm to estimate unknown parameters from a set of available data. Through algorithms, we can evaluate and construct more data set for underwater targets detecting and localizing systems. This article introduces about inversion acoustic method applied to estimate seabed sound speed parameters. This parameter significantly affects the quantity of detection and localization, but it is difficult to measure in actual experiments directly.