光学精密工程2017，Vol.25Issue(2)：342-350,9.DOI:10.3788/OPE.20172402.0342
星载激光通信系统遮光罩的优化设计
Optimized design of baffle in satellite laser communication system
摘要
Abstract
In order to enhance the available probably ratio and to improve the temperature level and difference in a specific geostationary earth orbit (GEO) laser communication system,the structure of baffle was optimized.The baffle was uniformly installed grids on internal surface on the basis of GEO orbit external thermal flux characteristics,without the decrease of laser communication signal property.Firstly,the impact of grid and baffle inner wall on the solar view factor of the primary mirror was discussed in terms of energy shield ratio standard less than 5 ％.Then,the thermal simulation of temperature level and difference on the primary and secondary mirrors were performed by IDEAS,in which the influence of number and layout of grids on temperature indexes was analyzed.Finally,the laser communication available probably ratio with the optimized baffle was calculated.The results show that deploying 4 equally distributed grids along both parallel and vertical directions to the equator in the baffle,the available communication probably ratio is raised from 81.51％ to 91.21％ in comparison with the one of traditional cylindrical hollow baffle.关键词
激光通信/遮光罩/栅板/温度水平/温度不均匀性Key words
laser communication/baffle/grid/temperature level/temperature difference分类
信息技术与安全科学引用本文复制引用
刘伟达,康一丁,李小明,孟立新,张树仁,张立中..星载激光通信系统遮光罩的优化设计[J].光学精密工程,2017,25(2):342-350,9.基金项目
国家863高技术研究发展计划资助项目(No.2012AA7011111) （No.2012AA7011111）
