色差对猫眼系统回波影响的理论与实验  

Theory and Experiment of Influence of Chromatic Aberration on Cat-eye System Echo

作　　者：豆贤安[1] 孙晓泉[1] 张创新[1] 

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

出　　处：《光电技术应用》2011年第2期35-38,共4页Electro-Optic Technology Application

摘　　要：利用光学窗口"猫眼效应"进行的激光主动探测易受探测激光波长的影响。建立透射式光学系统猫眼效应的色差理论模型,分析了由探测激光波长与透射式猫眼系统工作波段不匹配所产生的色差对激光主动探测的影响,并设计实验对理论分析结果进行验证。结果表明:由探测激光波长与透射式猫眼系统工作波段不匹配产生的色差,使猫眼系统的焦点发生偏移,导致激光主动探测的回波发散角明显增大、回波接收功率显著降低。得出结论:在对透射式猫眼系统进行激光主动探测中,探测激光波长应与猫眼系统的工作波段相匹配。Using optical window cat-eye effect,the laser active detection is easily influenced by laser wavelength.A chromatic aberration theoretical model of the transmission-type cat-eye effect is established.The detecting laser wavelength doesnt’ match with the operating band of transmission-type cat-eye system,which generates the chromatic aberration,so the influence of chromatic aberration on laser active detection is analyzed.An experiment is designed to validate the theoretical analysis results.The results indicate that the generated chromatic aberration results in the focus shift,the echo divergence angle is obviously increased and the received echo power is decreased.The conclusion is that the detecting laser wavelength should match with the operating band of the transmission-type cat-eye system.

关 键 词：激光主动探测 猫眼效应 色差 焦点偏移 

分 类 号：TN249[电子电信—物理电子学]