非视距被动声定位与跟踪方法  

Research on the NLOS Acoustic Passive Localization and Target Tracking

作　　者：周德[1,2] 高勇[1] 

机构地区：[1]四川大学电子信息学院,四川成都610065 [2]中国人民解放军77108部队,四川成都611233

出　　处：《信息与电子工程》2009年第1期4-8,共5页information and electronic engineering

摘　　要：非视距声信号通过短程线路径绕射到达基阵,将信号传播所得的短程线离散化,通过离散点之间的迭代关系,对绕射信号进行了射线寻迹。针对非视距情况下被动声定位及跟踪技术的特点,基于射线寻迹的原理,提出了对被动声源进行非视距定位的方法,然后利用卡尔曼滤波分别对静止和移动目标进行跟踪。仿真结果表明,当障碍物为非对称几何体时,能够对非视距声源位置及速度进行有效估计。The Non-Line Of Sight（NLOS） sound signal usually arrives at acoustic array by diffraction in the geodesic path. The ray tracing of diffracted signal is performed between the discrete points on the geodesics. According to the characters of the NLOS acoustic passive localization and tracking technology, a method of NLOS acoustic passive localization based on ray tracing is presented, and the Kalman filtering is applied to trace both static and moving targets. The simulation results show that both localization and velocity parameters of the targets can be estimated effectively when the obstacles are dissymmetric geometries.

关 键 词：被动声定位 非视距 射线寻迹 卡尔曼滤波 

分 类 号：V249.3[航空宇航科学与技术—飞行器设计]