载波调制激光雷达水下目标探测的仿真分析  

Simulation analysis of modulated lidar on optical carrier for target detection in water

作　　者：冀航[1] 马泳[1] 杨克成[2] 

机构地区：[1]华中科技大学电子与信息工程系武汉光电国家实验室,武汉430074 [2]华中科技大学光电子科学与工程学院,武汉430074

出　　处：《光学技术》2007年第5期648-650,653,共4页Optical Technique

基　　金：国家863高技术研究发展计划资助项目(2002AA616070)

摘　　要：激光雷达应用于水下目标探测,光信号受水体后向散射影响,导致目标对比度严重下降。一种以载波调制激光脉冲为探测信号的方法可实现对后向散射信号的抑制。利用基于蒙特卡罗的光子传输模型,模拟载波调制激光雷达水下目标探测的全过程。结果表明该方法对水下目标探测有明显改善,调制参数对探测性能有较大影响。In conventional lidar underwater target detection, underwater target contrast is limited by incoherent backscatter clutter. This problem can be solved by a kind of modulated lidar detection technology which superimpeses medulation on the optical carrier. The propagation modeling of photons based on Monte Carlo method is used to simulate the process of a modulated lidar system detecting underwater targets. The results show the targets contrast is improved significantly and modulation parameters affect the detection performance obviously.

关 键 词：载波调制激光雷达 后向散射 频域滤波 蒙特卡罗 

分 类 号：TN955[电子电信—信号与信息处理]