一种混沌水下定位优化方法研究  

Research on a chaotic underwater location optimization method

作　　者：徐亮 赵英亮 王黎明 郭思毅 田培廷 Xu Liang;Zhao Yingliang;Wang Liming;Guo Siyi;Tian Peiting(Institute of Signal Capture And Processing,North University of China,Taiyuan 030051,China)

机构地区：[1]中北大学信息探测与处理技术研究所

出　　处：《国外电子测量技术》2019年第11期119-123,共5页Foreign Electronic Measurement Technology

摘　　要：水下定位技术是我国开展海洋事业和发展水下集群智能系统的关键技术。由于水声信道复杂,噪声干扰以及多径效应严重,严重影响水下定位算法,使得目标定位存在较大误差。提出一种基于混沌的水声定位优化方法。该方法以混沌扩频信号作为水声信号,利用混沌信号相关特性理想的特点,通过相关法提高测距精度,进而对三边定位算法进行优化,减小目标定位误差。仿真结果表明,该方法测距精度高,目标定位结果准确、误差小,达到了预期的优化效果。Underwater positioning technology is the key technology to develop the Marine industry and intelligent underwater cluster system in China.Due to the complexity of underwater acoustic channel,serious noise interference and multipath effect,the underwater positioning algorithm is seriously affected,and the target positioning has a large error.This paper presents an optimization method of underwater acoustic location based on chaos.This method takes chaotic spread spectrum signal as underwater acoustic signal,and makes use of the ideal characteristics of chaotic signal correlation,improves the ranging accuracy by correlation method,and then optimizes the three-sided positioning algorithm to reduce the target positioning error.Simulation results show that this method has high accuracy,accurate target location results,small error,and achieves the expected optimization effect.

关 键 词：水声信道 混沌信号 相关法 三边定位 

分 类 号：TN929.3[电子电信—通信与信息系统]