抗背景光干扰的激光脉冲相关检测方法

摘要

针对激光脉冲相关检测对具有相关性的背景光干扰难以抑制的问题,提出了一种抗背景光干扰的系统改进方法.利用两路探测单元同时接收目标信号和背景光的混合信号,另两路视场完全相同的探测单元仅接收背景光,将它们的输出分别对应相减后再进行相关处理,从而抑制了各单元间相关的背景光干扰.实验结果表明,改进后的系统对背景光干扰能够有效的抑制,证明了方案的可实现性与有效性.%Considering that it is difficult to suppress background light interference with'dependency in laser pulse correlation detection, a method for background light interference suppression was proposed. Two of four parallel detectors were used for receiving target signal and background light,while the other two received background light only. The background light interference was suppressed through subtracting background light from the mixed signal before correlation processing. Experiment results demonstrated that the background light interference was suppressed effectively, and the scheme is proved to be feasible and effective.