准光学馈电网络高精确度镜体结构热变形仿真分析
Thermal deformation simulation of high precision mirror structure in quasi-optical feed network
李贝贝 1葛如飞 1龙澄 1于雨 1吴涛1
作者信息
- 1. 上海航天电子技术研究所,上海 201109
- 折叠
摘要
毫米波亚毫米波探测仪在静止轨道运行时,其各子系统性能受环境热辐射影响.根据在轨温度场数据,采用有限元分析法对准光学馈电网络热变形情况进行仿真;采用GRASP软件将器件热变形后的形位、形面参数进行拟合,仿真分析当准光馈电网络受在轨环境热辐射时电性能变化情况.结果表明,环境热辐射对准光学馈电网络的电性能有一定影响,采用温控措施后,可避免在轨温度变化引起的性能变化.
Abstract
Millimeter-wave and sub-millimeter-wave detectors,when operating in geostationary orbit,are influenced by environmental thermal radiation in the performance of their subsystems.Based on in-orbit temperature field data,finite element analysis is employed to simulate the thermal deformation of the quasi-optical feed network;the GRASP software is adopted to fit the positional and surface parameters after the device's thermal deformation,and to simulate the changes in electrical performance when the quasi-optical feed network is subjected to on-orbit environmental thermal radiation.The results show that environmental thermal radiation has a certain impact on the electrical performance of the quasi-optical feed network,and by adopting temperature control measures,it is possible to avoid performance changes caused by temperature variations in orbit.
关键词
准光学馈电网络/热变形分析/有限元分析/静止轨道/辐射场分析Key words
quasi-optical feed network/thermal deformation analysis/finite element analysis/geostationary orbit/radiation field analysis引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据