激光探测蒸发波导的原理与实验分析  

Theoretical and experimental analysis of laser detecting evaporation ducts

作　　者：王乐东[1] 王江安[1] 陈冬[1] 

机构地区：[1]海军工程大学电子工程学院,湖北武汉430033

出　　处：《华中科技大学学报（自然科学版）》2012年第4期80-83,共4页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：海军预研项目(4010607020201)

摘　　要：从海洋大气相对湿度的角度建立了大气折射率变化与气溶胶激光散射特性的理论联系.在实验室条件下,分别模拟了烟、水云、尘、雾、霾等类型粒子群的蒸发波导环境,采用波长为1.06μm的激光雷达对在不同温度和湿度条件下半径范围为0.1～100μm的气溶胶粒子群进行了探测实验,并对不同气溶胶粒子群的激光后向散射回波信号特征做了对比分析,实验结果进一步验证了激光蒸发波导的可行性和有效性.Theoretical relationships between atmospheric refractive index change and aerosol laser scattering characteristics were determined.Atmospheric environment evaporation that composed by particle swarm of smoke,dust, fog,haze and other types was simulated.A probe experiment for aerosol with radius from 0.1 to 100 μm was conducted using laser radar with wavelength of 1.06 μm.Echo signal characteristics of laser back scattering was analyzed comparatively,and the sumulation and experiment results shows that laser detecting.

关 键 词：激光探测 大气气溶胶 大气湿度 蒸发波导 大气折射率 

分 类 号：TN249[电子电信—物理电子学] TH766[机械工程—仪器科学与技术]