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

作　　者：李贝贝 葛如飞 龙澄 于雨 吴涛 LI Beibei;GE Rufei;LONG Deng;YU Yu;WU Tao(Shanghai Aerospace Electronic Technology Institute,Shanghai 201109,China)

机构地区：[1]上海航天电子技术研究所,上海201109

出　　处：《太赫兹科学与电子信息学报》2024年第7期764-767,共4页Journal of Terahertz Science and Electronic Information Technology

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。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 

分 类 号：TN015[电子电信—物理电子学]