海底剖面声阻抗分布声遥测模拟实验研究

MODEL EXPERIMENT ON THE REMOTE MEASURING OF ACOUSTIC IMPEDANCE OF THE SEA-BOTTOM

本文介绍一种声遥测海底平面层系声阻抗分布的模拟实验结果。实验在油漆厂冷却水池中进行,采用取样平均迭代的反演方法,对三介质层系的遥测结果与实测值较好地接近。

This paper presents the results obtained in the model experiments on the remote measuring of the acoustic impedance profile of a sea-bottom consisting of horizontal layers. The experiments were conducted in the cooling-water pool of a paint factory. Three inverse methods were used for the sound signals from a three-medium layer system. While the error by the difference method increased dramatically, leading to overflow in computation, and the results given by the 'sample iteration' method was irrational, the results obtained by using the 'sample-averaging iteration' method were quite close to the measured acoustic impedance.