大气散射对合成孔径激光雷达回波信噪比的影响  

Effect of Atmosphere Scattering on Echo Signal SNR of SAL

作　　者：吕旭光[1,2] 闫飞[1,2] 郝士琦[1,2] 

机构地区：[1]脉冲功率激光技术国家重点实验室,安徽合肥230037 [2]电子工程学院,安徽合肥230037

出　　处：《光电技术应用》2011年第1期36-39,共4页Electro-Optic Technology Application

摘　　要：回波信号功率是影响雷达探测分辨率的重要因素。结合大气散射对激光传输的影响,建立了波长为200~1 200 nm的激光传输中大气散射衰减的数学模型,并对该模型进行了仿真分析,得出激光大气传输过程中大气散射作用对激光衰减及其回波信噪比影响的规律。The echo signal power is the important factor that limits detection resolution.Combining the impact of atmosphere scattering on laser transmission,the atmosphere scattering attenuation model of laser with the wavelength from 200 to 1200 nm through the atmosphere is built,and the model is simulated and analyzed.The laws for the impact of atmosphere scattering on laser attenuation and echo signal SNR（signal noise ratio） are obtained.

关 键 词：合成孔径激光雷达 信噪比 大气散射 衰减特性 

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]