背景散射对LRCS测量精度的影响分析  

Influence of background scattering on measurement accuracy of laser radar cross section

作　　者：包学志[1] 高卫[1] 贾养育 吕鸿鹏 

机构地区：[1]北京跟踪与通信技术研究所,北京100094 [2]中国兵器工业第二O三研究所,陕西西安710065

出　　处：《应用光学》2008年第4期590-594,共5页Journal of Applied Optics

摘　　要：针对激光雷达散射截面的测量精度,指出测量中存在的背景散射问题。给出了激光雷达散射截面的测量方程,分析了地面、支撑架等背景散射对激光雷达散射截面测量精度影响的机理。根据测量方程和影响机理提出了敷设消光材料、多次比对测量、尺寸匹配等方法,并对敷设消光材料法进行了实验验证。实验表明:所用方法能够有效地减小背景散射,提高激光雷达散射截面的测量精度。To improve the measurement accuracy of laser radar cross section （LRCS）, the background scattering existing in the measurement is pointed out. The equation for measuring LRCS is presented. The mechanism for the effects of the background scattering from the ground and supporting frame on the measurement accuracy was analyzed. According to the equation and the mechanism, the methods to reduce the background scattering, which include extinction material coating, multi-contrasting measurement, size matching, are put forward. The method of the extinction material coating was verified by experiment. The experimental results show that the method could effectively reduce the background scattering and improve the measurement accuracy.

关 键 词：激光雷达散射截面 测量精度 比对测量 背景散射 

分 类 号：TN958.98[电子电信—信号与信息处理] TN249[电子电信—信息与通信工程]