一种侧扫声呐检测力的评价方法  

An Evaluation Method for Side Scan Sonar Detection Force

作　　者：库安邦 周兴华[2] 董立峰[2] 王方旗[2] 丁继胜[2] 刘敦武[2] 陶常飞[2] 

机构地区：[1]山东科技大学测绘科学与工程学院,山东青岛266510 [2]国家海洋局第一海洋研究所,山东青岛266061

出　　处：《海洋技术学报》2017年第2期35-40,共6页Journal of Ocean Technology

基　　金：海洋公益性行业科研项目资助(201305034);国家自然科学年基金资助项目(41606056)

摘　　要：侧扫声呐是海洋调查常用的探测仪器,为保证测量数据的准确性,对其实际探测性能的评价就显得尤为迫切。文中从侧扫声呐的工作原理出发,梳理了检测力和分辨力在概念上的混淆,并提出了一种评价检测力的方法;通过在海底人工放置一些已知大小的目标物,精确测量各个目标物的位置信息,并使用EdgeTech 4200MP双频侧扫声呐系统对目标物进行扫测试验以检测其检测力。结果表明,目标物和航迹线方向平行时,能够清晰地分辨直径或边长为20 cm,30 cm的物体,不能分辨出直径为10 cm的圆形物体,但能较清晰的分辨出直径为0.9 cm的长绳;目标物在垂直航迹线方向时,能够清晰地分辨直径或边长为10 cm的目标物,但是不能分辨出直径为0.9 cm的长绳;综合评价得出其纵向检测力优于1 cm,横向检测力优于10 cm。对常用声呐探测仪器的标准化体系的建立有一定的帮助。Side scan sonar is often used for marine survey detection. In order to ensure the accuracy of measured data,evaluation of the actual detection performance is of particular significance. Based on the working principle of side scan sonars,this paper analyzes the confusion of detection force and resolution in terms of concepts,and presents an evaluation method for the detection force. Some objects with known size and position are placed on the seafloor,and the Edge Tech 4200 MP dual frequency side scan sonar system is applied to accurately detect the position information of each target. The results show that when the objects and track direction are parallel,it is capable of clearly distinguishing the object whose diameter or length is 20 cm and 30 cm. However,it cannot clearly distinguish the object whose diameter is 10 cm. Nevertheless,it can clearly distinguish the long rope whose diameter is 0.9 cm. When the objects and track line are vertical,it can clearly distinguish the object whose diameter or length is 10 cm,but it cannot distinguish the long rope whose diameter is 0.9 cm. It can be concluded that its parallel detection force is less than 1 cm and its vertical detection is less than 10 cm. The results of this paper is conducive to establishing a standardized system for side scan sonars.

关 键 词：侧扫声呐 检测力 分辨力 方法 

分 类 号：P715[天文地球—海洋科学]