浅海环境中应答器法测量水下平台声目标强度的理论分析  

Theoretical analyses of measurement of the acoustic target strength of underwater platform using the transponder method in shallow water

作　　者：张波[1,2,3] 马忠成 宋曼 

机构地区：[1]大连测控技术研究所水下测控技术重点实验室,大连116013 [2]中国科学院大学,北京100190 [3]中国科学院声学研究所声场声信息国家重点实验室,北京100190

出　　处：《应用声学》2013年第2期109-115,共7页Journal of Applied Acoustics

基　　金：装备预先研究项目(51303030408);船舶工业国防科技预研基金(11J 3.1.6)

摘　　要：应答器法是在浅海环境中测量水下运动平台声目标强度的常用方法。根据简正波理论分析浅海点源声场的空间特性,指出不同号简正波之间的相互干涉是导致声场空间起伏的主要原因。对基于应答器法的水平平均测量法(HAM法)进行了理论分析,并提出一种新的浅海环境中水下运动平台目标强度的测量方法,即垂直平均测量法(VAM法)。对比了HAM法和VAM法的有效性、物理意义、试验效率和技术难度,分析表明二者物理意义相同,VAM法比HAM法具有更高的有效性和试验效率,不过其技术难度更大。The transponder method is commonly used to measure the acoustic target strength of a underwater platform in shallow water. By utilizing the normal mode theory, the sound field spacial characteristics of a point source in shallow water are analyzed. It is shown clearly that the interaction between different normal modes is the main reason leading to sound field spacial fluctuations. Thehorizontal-average measurement （HAM） is analyzed theoretically, and a new method is put forward for measuring the acoustic target strength of a underwater platform, namely the vertical-average measurement （VAM）. HAM and VAM are analyzed comparatively in terms of effectiveness, physical meaning, test efficiency and technical difficulties. It is indicated that they have the same physical significance, and the former has higher testefficiency and effectiveness, but higher technical difficulty.

关 键 词：应答器法 声目标强度 声场起伏 水平平均测量法 垂直平均测量法 

分 类 号：O427[理学—声学]