激光水下目标探测信号的光学遮挡接收

Optical Block Reception for Signals in Laser Underwater Target Detection System

针对激光水下目标探测信号接收的困难，提出了简单易行的光学遮挡接收方法。蒙特卡罗模拟结果表明：该方法能完全去除接收信号中的海面强反射脉冲和部分海水后向散射包络，同时保证有用的目标反射脉冲基本不受影响。

In a laser underwater target detecting system,the signals received usually consist ofthree components,namely,that due to surface reflection,the backscatter envelope and thepulse refiected from a target.In general,the first two useless components of a signal aremuch stronger than the useful target pulse,which makes signal recording very difficult.Toremedy such a situation,a simple and easy method using only an optical block is proposed. The results of Monte Carlo simulation have proved that it is capable of completely eliminat-ing the surface reflection and partially eliminating the backscatter envelope while guarantee- ing that the useful target pulse will not be affected.