【作者】 刘辉；

【导师】 刘继芳； 刘昆仑；

【作者基本信息】 西安电子科技大学 ， 电子与通信工程， 2013， 硕士

【摘要】 采用脉冲激光对舰船尾流进行后向探测是水下兵器制导的一个新应用方向。研究舰船尾流对激光脉冲后向散射特性的影响，探索出可用于探测舰船尾流的后向光学检测方法，是激光水下探测的研究重点之一。本文基于舰船尾流对脉冲激光的后向散射光学检测方法，搭建了一套光尾流探测系统，利用10m长的大水池分别实验研究了尾流中气泡和湍流对激光脉冲后向散射信号时域特性的影响。实验研究结果表明，气泡与湍流会对激光脉冲后向散射信号的时域特性如脉冲前后沿位置、脉冲宽度、形状等带来明显的改变，而且比较气泡与湍流的散射信号，时域特征的变化状况也有很大的区别。这说明利用脉冲激光对舰船尾流进行后向探测的方法不但可行，而且可以有效区分出尾流中的气泡与湍流。实验研究结果为光尾流制导的实际应用奠定了实验研究基础。更多还原

【Abstract】 Laser pulse backscatter used for backward detection of wakes is a new research direction of underwater weapon guidance. The study focus is the influence of bubbles and turbulence in ship wake on the backscattered laser pulse and how to develop a wake backward detection method.In this paper, an optical detection method to detect wakes is proposed and a detection system is build for experiment. The system is used to study the influence on the backscattered laser pulse of bubbles and turbulence experimentally in a pool with10m length.The experimental result shows that bubbles and turbulence can make obvious influence on backscattered laser pulse signal characteristics in time domain, so this method is feasible and can be used to distinguish the bubbles and turbulence in ship wake. This work will be a basis of a practical application in the detection system of the underwater weapon guidance.更多还原