基于极低频电场信号的水下目标远程探测及定位研究

项目名称： 基于极低频电场信号的水下目标远程探测及定位研究

项目编号： No.41476153

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 天文学、地球科学

项目作者： 王向军

作者单位： 中国人民解放军海军工程大学

项目金额： 80万元

中文摘要： 随着人们对目标特性认识的深化以及传感器技术、信号处理技术和微电子技术的发展，极低频电场信号作为水下目标的一种重要的物理场，成为了以电磁目标特性为信号源的新型水中兵器的攻击源。由于极低频电场信号在海水中传播特性复杂，受海洋环境中各种信号干扰严重，信噪比极低，国内外对利用该信号进行远程探测及定位的研究尚不成熟。本课题以水下目标的极低频电场传播特性为研究基础，通过对极低频电场信号物理建模、数值仿真、微弱信号的的检测和数据处理，最后得出一种适合于水下目标定位的分析方法，并研制原理样机进行海上实验验证。本课题提出的利用极低频电场进行水下目标定位的方法，将作为现有定位方法的有力补充，解决水下目标特性获取中对目标的远程探测及定位难题。

中文关键词： 反演算法；数值模拟

英文摘要： With the development of sensor technique,signal processing technique,microelectronic technique and identification of target properties, as an important physical field for underwater target, extremely low frequency electronic field signal is an aggressive source for certain signal source with electromanetism target properties. Because the propagation characteristic is extraordinary complex for the extremely low frequency electronic field signal,and catastrophic perturbation, low signal-to-noise ratio in the environment of seawater, the research on remote detection and localization is immaturity to utilize the extremely low frequency elcetronic field signal. The subject is based on propagation characteristic of the extremely low frequency electronic field signal for underwater target, by physical model building, numeric simulation, weak signal's detection and processing technique of the extremely low frequency electronic field signal, yield to an anlaytic method of localization for underwater target. The method is validated by prototype experiment on the seawater. The proposed the localization method is the supplement for localization in possession and settle the problem of remote detection and localization by underwater target properties.

英文关键词： inversion algorithm;numerical simulation