水下小目标的回波特性

Research on the Echo Characteristic of Underwater Small Targets

应用板块元方法对水下小目标的回波特性进行了研究,包括回声强度和多波束近程回波亮点声图像仿真等.通过回声强度计算和多波束仿真表明,小目标的目标强度指向性很强,并且可以看出亮点形成结构.湖上实验结果表明,板块元方法可以对水下小目标的回波特性进行预报且预报结果良好.

Theory of the article was applied in research of the echo characteristic of underwater small tar-gets, comprising the target strength and the multi-beam of short range echo highlight of sonar image emula-tion using the BKY method which used to forecast the large size targets such as submarines. The theory was tested and verified by the experiment on the lake. It can be concluded that the target strength of small targets changes dramatically with the angle variation. It is difficult to detect underwater small targets ow-ing to the target strength minor. The optimization of line shape is important to conceal property. The BKY method can be applied to forecast the echo characteristic of underwater small targets.