侧扫声纳系统声图几何失真分析及其改正方法  

Correction and analysis of geometric distortion in side scan sonar image

作　　者：熊传梁[1] 夏伟[1] 孙新轩[1] 刘雁春[1] 

机构地区：[1]海军大连舰艇学院海洋测绘与测绘工程系,辽宁大连116018

出　　处：《辽宁工程技术大学学报（自然科学版）》2013年第5期637-641,共5页Journal of Liaoning Technical University (Natural Science)

基　　金：国家自然科学基金资助项目(40871207)

摘　　要：针对侧扫声纳系统声图中的几何失真问题,通过拖鱼坐标系的七参数模型,分析了侧扫声纳系统拖鱼姿态、速度、升沉及声线弯曲对侧扫声纳声图造成的几何失真,建立了声图中拖鱼姿态改正、船速和升沉改正以及声线弯曲改正模型,并分析模型误差.研究结果表明:所用模型可有效改善声图的几何形变,模型误差小,对水下目标探测具有一定的理论和实践意义.In order to correct the geometric distortion in Side-Scan Sonar images, this study using the seven-parameters transform formula of the tow coordinate, analyzed the effect of tow＇s attitude, speed, heave and sound velocity profile, geometric distortion in side scan sonar, and derived the model for correcting geometric distortion produced by tow＇s attitude, speed, heave and sound velocity profile. The study result shows that the model can correct geometric distortion in side scan sonar image effectively, with little error, having theoretical and practical significance in target-detecting underwater.

关 键 词：侧扫声纳 声图 几何失真 七参数 拖鱼姿态 船速 升沉 声线弯曲 

分 类 号：P229.1[天文地球—大地测量学与测量工程]