Related citation: | Jie Huang,Chaolan You,Peng Hou,Da Luo,Xiangsen Kong,Xin Fu.Study on Thermal Deformation Measurement of Optical Remote Sensing Satellite Platform Based on Machine Vision[J].Journal of Harbin Institute Of Technology(New Series),2019,26(5):72-78.DOI:10.11916/j.issn.1005-9113.17146. |
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Author Name | Affiliation | Jie Huang | Shanghai Institute of Satellite Engineering, Shanghai 201109, China | Chaolan You | Shanghai Institute of Satellite Engineering, Shanghai 201109, China | Peng Hou | Shanghai Institute of Satellite Equipment, Shanghai 200240, China | Da Luo | Shanghai Institute of Satellite Engineering, Shanghai 201109, China | Xiangsen Kong | Shanghai Institute of Satellite Engineering, Shanghai 201109, China | Xin Fu | Shanghai Institute of Satellite Engineering, Shanghai 201109, China |
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Abstract: |
To solve the special requirements of the high orbit optical remote sensing-satellite for the thermal deformation of the platform, the thermal deformation test and measurement scheme of the satellite platform is designed. Through the comparative analysis of test results, the rationality of the thermal deformation design of the platform structure is verified. The results of thermal deformation measurement show that the maximum deformation of A camera mounting surface is 57.5〃, and the maximum deformation of B camera mounting surface points to 79.3〃, which can be used as the basis for thermal deformation prediction of satellite during the orbit operation. |
Key words: remote sensing satellite thermal deformation meteorological satellite |
DOI:10.11916/j.issn.1005-9113.17146 |
Clc Number:TU391 |
Fund: |
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Descriptions in Chinese: |
基于机器视觉的光学遥感卫星平台热变形试验及测量研究 黄杰1,尤超蓝1,侯鹏2,罗达1,孔祥森1,付鑫1 (1.上海卫星工程研究所,上海 201109; 2. 上海卫星装备研究所,上海 200240) 创新点说明:1)使用摄影测量方法进行卫星平台热变形测量,代替了原有的人工测量手段,提高了精度、效率; 2)卫星整平台使用摄影测量法进行热变形测量国内未见相关研究文献出现。 研究目的: 1)获取不同温度工况下平台结构热变形引起凝视相机安装面、扫描相机安装面的指向变化,以及两相机安装面之间的相对指向变化; 2)验证平台结构热变形设计的合理性。 研究方法: 设计了卫星平台热变形试验,试验模拟在轨典型外热流工况对卫星平台实施加热控制,使用数字近景摄影测量技术对热变形引起两台相机安装面绝对指向变化、两相机安装面之间的相对指向变化情况进行实时测量和分析。通过平台热变形测量结果与仿真分析结果的对比分析,为在轨卫星热变形的合理预测提供了技术基础。 研究结果: 通过平台结构热变形试验获取了6种典型温度工况下平台结构热变形引起的相机安装面、两相机间的指向变化规律,同时对比了有限元仿真结果,结论如下: 1)试验结果与仿真结果趋势基本一致,验证了平台结构热变形设计的合理性,进而得出仿真模型参数进一步修正的依据。 2)A相机安装面最大变形57.5角秒,B相机安装面最大变形79.3角秒,为在轨运行初期热变形预测提供了依据。 结论: 该方法有效对热变形规律进行了摸底,为修正仿真模型、在轨热模型提供了基础。 关键词:遥感卫星;热变形;气象卫星 |