摘要
将匹配场原理应用到单矢量水听器上实现声源的三维定位,根据声压、质点振速表达式进行推导,获得Bartlett相关表达式并进行分析和仿真。对仿真结果进行分析后指出:声压方法可以获得距离、深度估计,但无法区分角度;声压、轴向振速、法向振速组合可以区分角度并且分辨左右弦,但是同声压方法相比,距离深度分辨严重下降;而垂直振速、轴向振速、法向振速组合可以区分角度并且分辨左右弦,并且在距离、深度上比声压方法稍有提高。所以在单矢量水听器下,为了同时获得距离、深度、角度的估计,需要应用垂直振速、轴向振速、法向振速组合方法。
Matched field processing approach is applied to a single vector hydrophone for 3D source location in this paper.According to pressure and particle velocity＇s expressions,the single vector hydrophone＇s Bartlett expression is deduced and analyzed.Then simulation is made on it and the analyzed results are described as follows： pressure method can achieve range and depth location but not distinguish angle;pressure-axial velocity-normal velocity combination can distinguish angle without left/right ambiguity problem but have much worse performance of range and depth location than pressure method;axial velocity-normal velocity-vertical velocity combination can also distinguish angle without left/right ambiguity and have little better performance of range and depth location compared to pressure method.So,axial velocity-normal velocity-vertical velocity combination needs to be used for a single vector hydrophone to achieve 3D location.
出处
《声学技术》
CSCD
2012年第1期72-76,共5页
Technical Acoustics
