大气衰减对LRCS测量精度的影响研究  

Study of the influence on the LRCS measurement accuracy caused by atmospheric attenuation

作　　者：桑振夏[1] 李钟敏[2] 杨晓杰[1] 

机构地区：[1]中国人民解放军63898部队 [2]中国人民解放军63889部队

出　　处：《光学仪器》2011年第1期6-9,共4页Optical Instruments

摘　　要：为了研究大气衰减对激光雷达散射截面(laser radar cross section,LRCS)测量精度的影响,从LRCS测量原理入手,推导出大气衰减对LRCS测量精度影响的公式,得到大气衰减与LRCS测量精度的关系,即当前后两次测试时的大气衰减条件相差较大时,LRCS测量精度则会降低,反之,则会升高。通过MatLab仿真,得到直观的LRCS测量精度仿真结果,并结合经典大气衰减模型,举例验证了两种极端气候条件对测量误差的影响,同时给出一些测量LRCS建议,为后续的LRCS测量精度分析与修正提供参考。In order to study the influence on the laser radar cross section （LRCS） measurement accuracy caused by atmospheric attenuation, begin with the LRCS measurement, the paper deduces the formula about the influence on the LRCS measurement accuracy caused by atmospheric attenuation, and finds the relation between atmospheric attenuation and LRCS measurement accuracy, that is, the LRCS measurement accuracy will go down at the condition of fore and after two different atmospheric attenuation, or it will go up. The visual simulation result is offered by MatLab simulation. Based on the typical atmospheric attenuation model, the paper illustrates the influence on LRCS measurement accuracy caused by atmospheric attenuation in light of two extreme atmospheric conditions, and offers some advice about LRCS measurement, which will be useful reference to the subsequent LRCS accuracy analysis and amendment.

关 键 词：大气衰减 激光雷达散射截面 测量精度 

分 类 号：TN974[电子电信—信号与信息处理]