卫星角反射器有效衍射区域的研究  

Effective Diffraction Region for Satellite Retroreflector

作　　者：周辉[1] 李松[1] 郑国兴[1] 高俊玲[1] 韩春俊 

机构地区：[1]武汉大学电子信息学院,武汉430079 [2]国营红峰机械厂,湖北孝感432000

出　　处：《光子学报》2009年第8期1920-1925,共6页Acta Photonica Sinica

基　　金：国家航天项目资助

摘　　要：本文基于角反射器的几何结构模型,采用矢量形式的折反射定律,推导了在不同入射条件下有效衍射区域的数学表达式.通过数值模拟的方法分析了有效衍射区域的变化规律,以及该规律对远场衍射光强空间分布的影响.结果表明,随着光束入射角的增加,有效衍射区域逐渐减小,进而导致角反射器衍射强度发散程度增加.光束方位角的引入不会改变有效衍射区域的形状和衍射强度的总能量,而只会使其各自分布旋转方位角的大小.在不考虑大气效应的情况下,根据不同入射条件对应的衍射强度分布,并结合速差补偿理论,提出了一种全新的角反射器口径设计方法.Based on geometrical structure of retroreflector and vector form of reflection-refraction law, a mathematical model with EDR is built up for retroreflector.By the means of numerical simulation, the regularity of change for EDR and the impaction of regularity on far field diffraction intensity （FFDI） are analysed. The simulated results show that EDR decreases with the increase of the divergence of FFDI with laser incidence angle.But,laser amuzith has no impact on shape of EDR and total diffraction intensity,which only makes their distributions rotate amuzith angle. When atmospheric effects are ignored,In terms of FFDI distribution with different incidence condition and velocity aberration theory, the new way for designing retroreflector radius is put forward.The investigation of EDR provides important approach to calculate FFDI and design satellite retroreflector.

关 键 词：角反射器 有效衍射区域 远场衍射光强 速差补偿 

分 类 号：O436[机械工程—光学工程]