激光声水下目标探测器的设计
Design of underwater target detector by laser-induced sound signal
刘涛 1王江安 1宗思光 1梁善勇1
作者信息
- 1. 海军工程大学电子工程学院,湖北武汉430033
- 折叠
摘要
针对一种水下目标的声探测方法设计了激光声水下目标探测器.对激光声信号产生机理进行研究,并开展了水下探测器发射声信号检测的实验.结果表明:强脉冲激光聚焦于液体介质可以产生爆炸性球面声源,探测器内部的声反射面将球面声信号转变为高指向性的平面波信号.通过对探测器的发射信号和接收的目标回波信号进行数值计算,发现探测器发射信号具有窄波束指向性、高距离分辨力和远探测距离等特点,可以满足水下目标探测的应用需求.
Abstract
An underwater target detector by laser-induced sound was designed based on a method of detecting the underwater target by sound. The theories of laser-induced sound was researched. The detecting experiment system of a small underwater target was built. The experimental results show that the laser-induced sound signal will be produced by high .power pulse laser breakdown in water. The spherical laser-induced sound signal can be changed into the plane wave signal by acoustic reflector inside the detector. The laser-induced sound signals from the detector have the characters of narrow-beam direction, high range resolution and the long detection range by carrying out the numerical solution. The detector can complete the detection mission because of those characteristics.
关键词
激光声/水下目标/探测器/距离分辨力Key words
laser-induced sound/underwater target/detector/range resolution引用本文复制引用
基金项目
武器装备预研基金(51400010105JB1101)
武器装备预研重点基金(9140A14060207JB11)
出版年
2012
NETL
NSTL
维普
万方数据