影响多波束声学海底分类的入射角效应分析与实验研究

项目名称： 影响多波束声学海底分类的入射角效应分析与实验研究

项目编号： No.41306038

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 天文学、地球科学

项目作者： 陈宝伟

作者单位： 哈尔滨工程大学

项目金额： 25万元

中文摘要： 基于多波束测深声纳的声学海底分类是目前在海底地质调查科学研究中先进调查手段之一。声波的入射角与海底反向散射声学特性间存在密切而复杂的关联性（即入射角效应），它体现了海底底质特性对声波散射影响的一种固有物理现象，是多波束声学海底分类研究中不能回避的重要科学问题。本申请项目从高频声波在海底的统计散射理论出发,研究入射角效应对多波束声学海底分类的影响与消除方法以及入射角效应消除后各统计特征量的底质分类能力，对多波束声学海底分类的入射角效应机理进行了全面、系统地探索。主要研究内容包括：(1)多波束声纳海底反向散射数据的统计建模；(2)入射角效应对多波束声学海底分类的影响与消除方法研究；(3)基于多波束实测数据的多统计特征量估计；(4)水池环境下统计特征量底质分类能力实验验证。

中文关键词： 多波束声纳；入射角效应；声学海底分类；反向散射；

英文摘要： Nowadays, acoustic seabed classification (ASC), based on multibeam bathymetric sonar, is an advanced investigating method, which has been applied in seabed geologic investigation and scientific research. The incident angle and seabed backscatter acoustic data have close and complex relevance (referred to as the incidence angle effect). It is an inherent physical phenomena of seabed features to acoustic scattering, and thus can not become an avoided important scientific issue in multibeam acoustic seabed classification. This project starts with seabed statistical scattering theory of high frequency acoustic, and studies the incidence angle effect on multibeam acoustic seabed classification and its elimination method,and the seabed classification capability of the statistical characteristics after its effet elimination, which all-roundly and systematically investigate the incidence angle effect mechanism of multibeam acoustic seabed classification.The research topics include:(1) statistical modeling of seabed backscattering data measured by multibeam sonar; (2) the incidence angle effect on multibeam acoustic seabed classification and its elimination method; (3) multiple statistical characteristics estimation based on multibeam measured data; (4) under pool environment, experimental verification of sediment classi

英文关键词： multibeam sonar；incidence angle effect；acoustic seabed classification；backscatter；