| “HY—1A”卫星海洋水色扫描仪像旋转图像校正处理 |
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| 引用本文： | 曾韬,刘建强,谢春华. “HY—1A”卫星海洋水色扫描仪像旋转图像校正处理[J]. 海洋学报, 2008, 30(1): 47-50 |
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| 作者姓名： | 曾韬 刘建强 谢春华 |
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| 作者单位： | 国家卫星海洋应用中心, 北京, 100081 |
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| 摘 要： | "海洋1"号("HY—1A")卫星海洋水色扫描仪由于K镜的失效而出现了像旋现象,对获得的卫星图像质量产生直接影响。基于光学反射矢量理论,分析了多元探测器并行扫描方式下45°扫描镜加K镜的扫描轨迹特征,利用图像之间的相关性,首先自动寻找K镜停转的准确角度,然后根据K镜的停转角度与多元并扫理论对像旋图像进行了校正处理,获得了可用的校正图像。
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| 关 键 词： | 45° 扫描镜 K反射镜 像旋校正 多元探测器 |
| 文章编号： | 0253-4139(2008)01-0047-04 |
| 收稿时间： | 2006-12-11 |
| 修稿时间： | 2006-12-11 |
Correction to the image rotation of "HY-1A" COCTS images |
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| ZENG Tao,LIU Jian-qiang and XIE Chun-hua. Correction to the image rotation of "HY-1A" COCTS images[J]. Acta Oceanologica Sinica (in Chinese), 2008, 30(1): 47-50 |
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| Authors: | ZENG Tao LIU Jian-qiang XIE Chun-hua |
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| Affiliation: | National Satellite Ocean Application Service, Beijing 100081, China |
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| Abstract: | The image rotating phenomenon occurs in the China "HY——1A" satellite ocean color temperature scanner because the onboard K mirror is unable to work, and it impacts the quality of satellite images.The multi-pixel scanning track of 45° rotating scanning mirror with K mirror is analyzed based on the vector theory of optical refraction.First, the K mirror's angle is searched automatically based on the theory of image relativity.Second, the rotating image is corrected by the K mirror's angle and the theory of multipixel scanning.Finally, a usable corrected-image is obtained. |
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| Keywords: | 45° rotating scanning mirror K mirror image rotating correction multi-pixel scanner |
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