| 风云四号辐射计的高精度动态测角系统 |
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| 引用本文： | 程仕东,刘宏伟,裴云天,王淦泉.风云四号辐射计的高精度动态测角系统[J].红外与激光工程,2007,36(1):89-91. |
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| 作者姓名： | 程仕东 刘宏伟 裴云天 王淦泉 |
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| 作者单位： | 中国科学院上海技术物理研究所,上海,200083 |
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| 摘 要： | 为了测试风云四号气象卫星扫描成像辐射计的扫描镜的动态运动精度，设计了一种高精度动态测角仪。该测角仪利用了扫描成像辐射计的可见光通道，采用622 nm的LED可见光,经过菲涅耳透镜投射到目标板上，然后充满投影光学系统的入瞳,利用光学成像分析像点位置及相互关系的方法来评价扫描镜的运动精度。介绍了该测角仪的投影光学系统、照明系统和系统总体的设计。
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| 关 键 词： | 辐射计 投影光学系统 照明系统 菲涅耳透镜 测角仪 |
| 文章编号： | 1007-2276（2007）01-0089-03 |
| 收稿时间： | 2006/8/18 |
| 修稿时间： | 2006-08-182006-09-20 |
High-performance collimator for dynamic test of FY-4 imager |
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| CHENG Shi-dong,LIU Hong-wei,PEI Yun-tian,WANG Gan-quan.High-performance collimator for dynamic test of FY-4 imager[J].Infrared and Laser Engineering,2007,36(1):89-91. |
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| Authors: | CHENG Shi-dong LIU Hong-wei PEI Yun-tian WANG Gan-quan |
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| Affiliation: | Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China |
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| Abstract: | The high-performance wide-field collimator for dynamic test of FY-4 imager is designed in order to test the dynamic scanning performance of the FY-4 geostationary meteorological satellite imager. This system uses an array of LEDs radiating at 622 nm, which is within the visible bands of the imager. The light from LEDs is projected through a Fresnel lens and the target plate to the pupil of the projection lens. The scanner′s dynamic performance is evaluated by analyzing the position of images and their relationship.The design of collimator′s projection lens, illumination system and general construction of system are introduced. |
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| Keywords: | Imager Projection lens system Illumination system Fresnel lens Collimator |
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