项目名称: 光学系统低温环境下辐射特性研究
项目编号: No.61308100
项目类型: 青年科学基金项目
立项/批准年度: 2014
项目学科: 无线电电子学、电信技术
项目作者: 谭凡教
作者单位: 哈尔滨工业大学
项目金额: 24万元
中文摘要: 空间光学系统辐射特性研究是空间光学系统研究与优化设计的必要环节,是空间光学遥感器性能评估、预测、应用不可逾越的过程。然而在空间低温环境下,光学系统承受低温环境、力学条件的双重作用,其辐射特性较常温状态截然不同。而目前我国空间光学领域研究低温环境下系统光学辐射特性仍然缺乏理论基础。本项目以辐射度学和形体非线性形变理论为方法,基于双向反射分布函数(BRDF)进行系统光学辐射特性的基础理论研究,着力研究光学系统在低温环境下的系统形体非线性形变和表面微观非相似性对系统辐射特性的作用机理模型。并建立低温环境试验,验证形变特性对辐射特性的作用模型,并将模型应用于典型空间光学系统和针对系统构件进行低温环境下辐射模型验证试验。该项目研究填补我国空间光学系统在低温环境下辐射特性研究的空白,对空间光学遥感技术研究具有突破性的基础探索研究价值和深远的研究意义,也为深冷空间光学系统设计与应用提供新理论和方法。
中文关键词: 光学系统;辐射特性;低温环境;双向反射分布函数;非线性形变
英文摘要: For space optical system research and optimizational design, it is necessary to research system radiation characteristic, and it is a necessary progress for space optical romote sensor appraising, optimization, pridiction, and application. However, under space low temperature condition, effected by double effectors of low temperature and system structure mechanical condition, space optical system's rediation condition is different to that under normal temperature. In nowadays, in our country, there lacks of theorical dasis for researching optical system radiation under low temperature in the field spacial optical research. Applying with radiometry and body nonline deformation theory, based on bidirectional reflectance distribution function(BRDF), the project researches the action model of system bodies nonline deformation and surfaces microstructure non-similarity to system radiation characteristic, and sets up testing experiment to test and check the working model of deformation character acting to radiation character, and lastly puts the model into use in classic spacial optical system and aimming at the class system's structure, sets up radiation model checking experiment under low temperature to check the structure action to system radiation. The research fills the gap of space optical radiation research und
英文关键词: optical system;radiation characteristic;low temperature condition;bidirectional reflectance distribution function;body nonlinear deformation