轻型空间遥感器光机系统研究

Research on Opto-mechanical System of Lightweight Space Telescope

TMA空间光学系统可以同时实现大视场和轻型化,在目前空间光学遥感器中得到了广泛的应用。本文对焦距1m、视场8.5°的空间遥感器光机系统进行了研究,对遥感器具体结构进行了细致的探讨,利用有限元分析技术对空间遥感器整机结构进行了工程分析。结果表明,采用单点挠性支撑的各反射镜支撑系统、采用环氧/碳纤复合材料的桁架主支撑结构可以很好地保证反射镜在静力学、热环境下镜面具有较高的面形精度和位置精度,而其支撑自身在动力学环境中不会破坏。这种光学遥感器非常适合在重量要求较严格的大视场空间成像小卫星中使用。

TMA space optical system can obtain wide field of view and lightweight simultaneously,so this kind of space telescope has been applied widely in the current.A 1 m focal length with 8.5° field of view space optical remote sensor was discussed in this paper,and the specific structure of the remote sensor was studied in detail at the same time.By adopting finite element analysis technique,the structure of the space remote sensor was analyzed.The analysis results indicated that all the space mirror system and support structure had enough static,dynamic stiffness and thermal dimensional stability,the support structure would not be destroyed in the dynamic environment.This space optical remote sensor was very suitable for little satellite application.