基于声场干涉结构的双水平阵(元)被动测距  

Passive ranging based on acoustic field interference structure using double arrays(elements)

作　　者：余赟[1,2] 惠俊英 赵智勇 王鲁军 

机构地区：[1]海军装备研究院,北京100161 [2]哈尔滨工程大学水声技术重点实验室,哈尔滨150001 [3]海军驻宜昌地区军事代表室,宜昌443000

出　　处：《声学学报》2012年第4期440-447,共8页Acta Acustica

摘　　要：为探寻适用于拖曳线列阵声呐的被动测距方法,基于海洋波导的重要特征一低频声场具有稳定可观察的干涉结构,结合波导不变量理论提出了两种被动测距算法。采用双水平阵(元)模型,分别获得各阵(元)的LOFAR图和方位时间历程后,对LOFAR图进行Radorn变换提取干涉条纹的频率时间历程,进而结合各测距算法实现被动测距。并通过仿真研究和定位精度分析,验证了算法的可行性。Two kinds of passive ranging algorithms are proposed combined with waveguide invariant theory based on the important characteristic of the ocean waveguide that the interference structure is stable and can be observed in the low-frequency acoustic field,in order to explore the passive ranging method suitable for the towed line array sonar.The double arrays（elements） model is adopted,so the LOFARgram and bearing-time records of the each array（element） can be obtained.Then the frequency-time records can be extracted by processing the LOFARgram via Radon transform,so the passive ranging can be achieved combined the corresponding ranging algorithms.And the feasibility of the algorithms has been verified by simulation researches and positioning accuracy analysis.

关 键 词：干涉条纹 被动测距 低频声场 结构 拖曳线列阵声呐 测距算法 水 时间历程 

分 类 号：TB566[交通运输工程—水声工程]