“猫眼”系统中离焦量的变化对回波功率的影响  

Influence of the reflected wave power in deviate focus "Cat-eye" system

作　　者：卞学丽[1] 

机构地区：[1]电子科技大学,四川成都610054

出　　处：《中国测试技术》2007年第2期84-86,共3页CHINA MEASUREMENT & TESTING TECHNOLOGY

摘　　要：阐述了“猫眼效应”的基本原理,给出了离焦时的“猫眼”模型,采用光线追迹的方法着重分析了离焦时“猫眼”系统的回波功率的变化情况。通过分析可看出,后向移动光敏面的可调制范围远远大于前向移动光敏面的可调制范围,这使得应用“猫眼”系统后向离焦量的改变,来改变回波功率的大小,使其能传递信息成为可能。This paper introduced the basic principle of the ＂cat-eye effect＂ in detail. A basic model of ＂cat-eye effect＂ has been given when the plane of reflect deviates from focus plane. On emphases, the intensity changes of the reflected wave when the planet deviated from focus plane with the ＂ray tracing＂ method. The properties of the focus-deviations in the ＂cat-eye＂ systems were carefully studied. It is possible to employ this decreasing curve to the transfer of the information.

关 键 词：光线追迹 猫眼效应 离焦 回波功率 光敏面 

分 类 号：TP212.2[自动化与计算机技术—检测技术与自动化装置]