“HY—1A”卫星海洋水色扫描仪像旋转图像校正处理  

Correction to the image rotation of "HY—1A" COCTS images

作　　者：曾韬[1] 刘建强[1] 谢春华[1] 

机构地区：[1]国家卫星海洋应用中心,北京100081

出　　处：《海洋学报》2008年第1期47-50,共4页

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。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.

关 键 词：45°扫描镜 K反射镜 像旋校正 多元探测器 

分 类 号：V443.5[航空宇航科学与技术—飞行器设计]