摘要
介绍了一套空间光学遥感器的计算机辅助热分析方法 ,包括热平衡计算、热弹性分析、热光学分析、热光学灵敏度分析以及热设计方案评价等。热平衡计算用来预示遥感器的温度分布 ,热弹性分析用来计算热致变形和面型变化 ,热光学分析讨论热致位移和面型变化对成像质量的影响 ,热光学灵敏度分析则讨论不同形式的温差变化对成像质量影响的敏感程度。通过上述分析 ,能够弄清空间热环境对遥感器温度分布以及温度分布对成像质量的影响 ,进而提出热控制指标、制定合理的热设计方案。
A computer aided thermal analysis method of space optical remote sensor (SORS) is presented, including thermal balance computation, thermo-elastic analysis, thermo-optical analysis, thermo-optical sensitivity analysis and thermal design evaluation. Thermal balance computation is to predict temperature distribution of SORS, thermo-elastic analysis is to compute thermal-induced elastic distortions of optical benches and surface figure of optical elements, thermo-optical analysis is to analyze the effects of above-mentioned distortions on image quality, thermo-optical sensitivity is to discuss sensitivity coefficients of circumferential, axial, radial and temperature level on image quality. These analyses are helpful to understand the effects of space thermal environments on SORS and therewith on image quality, to bring forward targets of thermal control, and to establish reasonable thermal design scheme. Its application in an engineering project indicates that this method is valuable.
出处
《中国科学院研究生院学报》
CAS
CSCD
2003年第4期407-413,共7页
Journal of the Graduate School of the Chinese Academy of Sciences
关键词
光学遥感器
热平衡
热弹性
热光学
热光学灵敏度
热设计评价
space optical remote sensor, thermal balance computation, thermo-elastic analysis, thermo-optical analysis, thermo-optical sensitivity analysis, thermal design evaluation
