海底入射角对多波束反向散射强度的影响及其改正  

Influence of Seafloor Incidence Angle on Multibeam Backscatter Intensity and Corrected Method

作　　者：金绍华[1] 翟京生[2] 刘雁春[1] 崔高嵩[1] 

机构地区：[1]大连舰艇学院海测绘科学与工程系,大连市解放路667号116018 [2]海洋测绘研究所,天津市友谊路40号300061

出　　处：《武汉大学学报（信息科学版）》2011年第9期1081-1084,共4页Geomatics and Information Science of Wuhan University

基　　金：国家自然科学基金资助项目(40871207);大连舰艇学院科研发展基金资助项目

摘　　要：综合考虑测船姿态、声线弯曲和海底地形对入射角的影响,推导了计算多波束海底入射角的实用模型。根据Lambert法则,改正海底入射角对反向散射强度的影响。实例计算结果表明,所述模型能精确地计算波束在海底的入射角,有效地改正其对反向散射强度的影响。From the spatial vector,comprehensively considering the effect of survey vessel attitude,sound velocity profile and seabed topography on incidence angle,the practical model for calculating multibeam seafloor incidence angle is derived.Based on Lambert law,the influence of seafloor incidence angle on backscatter intensity is corrected.The result shows that the proposed model can precisely calculate the beam incidence angle on the seafloor,and its influence on backscatter intensity is corrected effectively.

关 键 词：海底入射角 反向散射强度 测船姿态 声线弯曲 海底地形 

分 类 号：P229.1[天文地球—大地测量学与测量工程]