影响星载光学镜面热变形的部分因素分析  

Partial Factor Analysis of Effect Reflector Surface Thermal Distortion on Satellite

作　　者：李晓峰[1] 张百雷[1] 林密[1] 

机构地区：[1]电子科技大学物理电子学院,成都610054

出　　处：《电子科技大学学报》2005年第6期786-789,共4页Journal of University of Electronic Science and Technology of China

基　　金：国家863计划资助项目(2002AA107493)

摘　　要：在轨运行热环境条件下,星载激光通信端机光学天线镜面热变形将对空地激光通信链路性能产生严重影响。采用有限元分析法对不同固定方式下镜面热变形进行分析,结果表明:镜体释放热应力前后的法向角度偏差可达近3个数量级;在合理采用压板固定方式后,镜面法向偏转角度在10?7弧度量级。对采用潜望式结构的空地激光通信链路星上端机天线系统,压板固定法是适合其工作方式可选用的较优的反射镜镜体固定选择方案。With the terminal on satellite in the orbital motion thermal condition, optical antenna mirror surface thermal distortion will badly affect the performance of laser communications links. Applying finite element method to analyze shows that normal angle deviation of mirror body before and after thermal tension being released can be nearly 3 order magnitude which is 10^-7 radian when reasonable application of pressing-plate method. Pressing-plate method is, in certain condition, a more optimum solution of fixing method to the working way of terminal on satellite in space-to-ground laser communication links.

关 键 词：镜体固定方式 镜面热变形 热环境 空地激光通信链路 

分 类 号：TN929.13[电子电信—通信与信息系统]