| 低温红外镜头星点检测数据处理方法研究 |
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| 引用本文： | 李妥妥,苏云,兰丽艳.低温红外镜头星点检测数据处理方法研究[J].航天返回与遥感,2008,29(4):24-29. |
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| 作者姓名： | 李妥妥 苏云 兰丽艳 |
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| 作者单位： | 北京空间机电研究所,北京,100076 |
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| 基金项目： | 中国空间技术研究院自主研发课题 |
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| 摘 要： | 在实验室模拟低温真空环境对红外镜头进行星点检测时，不能在像面处直接测得星点光源的像，而是通过在焦面处放置反射镜使系统二次成像的方法测得二次成像的弥散斑大小。二次像斑尺寸的变化将能反映出由温度变化引起的被测镜头焦面处像斑尺寸的变化。通过理论推导得出一次像与二次像弥散斑大小的数学关系，并通过对不同尺寸星点光源、不同像质光学系统的仿真分析，得出星点检测法的检测精度与星点孔直径有关，而与镜头本身成像品质无关。
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| 关 键 词： | 弥散斑 星点检验 数据处理 低温光学 红外镜头 空间环境模拟 |
Study on a Method of Data Processing for Star Test of Cryogenic Infrared Lens |
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| Li Tuotuo,Su Yun,Lan Liyan.Study on a Method of Data Processing for Star Test of Cryogenic Infrared Lens[J].Spacecraft Recovery & Remote Sensing,2008,29(4):24-29. |
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| Authors: | Li Tuotuo Su Yun Lan Liyan |
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| Abstract: | During the star test to cryogenic infrared lens in the simulated cryogenic-vacuum environment,the image of star source can't be received in focal plane directly.When a mirror was placed in focal plane,the secondary image of star source can be received in object plane.The change of the first image caused by the temperature variation could be obtained from the secondary image.In the paper,the mathematic representation,which expressed the relation between the dispersion spots of the first image and the seconda... |
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| Keywords: | Dispersion spot Star test Data processing Cryogenic optics Infrared lens Space environment simulation |
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