浅海环境中被动定位方法研究及软件实现  

Studies on Passive Positioning Method in Shallow Water and the Implementation of Positioning Software

作　　者：刘亚琴 刘岩 祝献[1] LIU Yaqin;LIU Yan;ZHU Xian(Hangzhou Applied Acoustic Research Institution,Hangzhou 310023,China)

机构地区：[1]杭州应用声学研究所,浙江杭州310023

出　　处：《电声技术》2022年第4期27-30,共4页Audio Engineering

摘　　要：针对浅海环境中的宽带脉冲信号,研究基于粒子滤波算法的被动定位,并在此基础上,完成被动定位软件设计。基于简正波理论,利用接收点处声压、振速时域信号,获取频率域上垂直波阻抗作为测量向量,构建测量方程,建立基于粒子滤波算法进行水中目标定位的估计方法。在此基础上,完成定位软件的设计实现。在两种不同的波导环境中进行软件测试。测试结果表明,定位软件能够成功绘制距离和声源深度估计曲线,且估计曲线收敛于真值附近,表明软件能够有效完成对距离和声源深度的估计。A passive positioning method based on the particle filtering is studied for wideband pulse signals in shallow water environement.On this basis,passive positioning software is designed.Based on normal mode theory,the vertical wave impedance in the frequency domain is obtained as the measurement vector by using the time domain signals of sound pressure and vibration at the receiving point,the measurement equation is constructed,and the estimation method bassed on particle filter algorithm is established.On the basis,the design and implementation of positioning software is completed.The software is tested in two different waveguide environments,and the results show that the software can successfully draw the estimation curves of distance and source depth,and the estimation curves converge near the true value,indicating that the software can effectively estimate the distance and source depth.

关 键 词：浅海 被动定位 粒子滤波 定位软件 

分 类 号：TN912.2[电子电信—通信与信息系统]