利用多途时延的被动目标定位方法  

Localization of passive submerged target using multipath time delays

作　　者：徐晓男 马启明[1] 杜栓平[1] 

机构地区：[1]杭州应用声学研究所声纳技术重点实验室,杭州310012

出　　处：《应用声学》2013年第2期129-136,共8页Journal of Applied Acoustics

摘　　要：本文研究了在海洋波导环境中利用多途时延信息进行水下目标被动定位的方法。理论分析了在等声速理想海洋波导环境中,多途时延信息随时间变化的规律及其与目标运动状态之间的联系。分析结果表明,不需要已知声线类型而仅利用多途时延信息即可实现浅海波导环境中水下目标的被动定位。利用多途时延信息,当有两条声线到达时可以估计运动目标的归一化径向速度;当有三条声线到达时,可实现水下运动目标距离、径向速度的估计。最后利用仿真和实验数据对上述结论进行了验证。In this paper, the problem of localization of passive submerged target in shallow water waveguide using multipath time delays is considered. The relationship between multipath time delays＇ temporary character and target motion state has been analyzed theoretically in constant sound velocity shallow water waveguide environment. The analysis indicates that submerged target can be localized in shallow water waveguide simply by using time delays without the information of the types of rays arrived. With some approximation, normalized radial velocity can be estimated using one time delay, while range and radial velocity can be estimated using two time delays. Examples of simulation and experiment are shown to verify the results.

关 键 词：多途时延 被动水下目标定位 波导 

分 类 号：TB566[交通运输工程—水声工程]