| 星载光机扫描仪像移模型及补偿方法 |
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| 引用本文： | 王跃明,王建宇.星载光机扫描仪像移模型及补偿方法[J].红外与激光工程,2012,41(4):952-957. |
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| 作者姓名： | 王跃明 王建宇 |
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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;中国科学院红外探测与成像技术重点实验室,上海 200083 |
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| 基金项目： | 载人航天工程空间应用系统项目资助 |
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| 摘 要： | 针对地球自转运动形成的星载光机扫描式成像仪的图像畸变问题,详细描述了畸变量与地球纬度及仪器工作参数之间的关系,给出了太阳同步轨道扫描成像仪的畸变量计算公式。针对传统地面畸变校正算法的不足,提出了基于光学补偿扫描和星上软件补偿采样的两种像移补偿方法。详细分析两种方法的特点与可行性,并给出仿真结果。该研究工作对于提高星载光机扫描式成像系统的图像质量具有参考意义。
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| 关 键 词： | 星载 光机扫描仪 像移补偿 畸变校正 |
Imaging motion model and compensation methods of spaceborne opto-mechanical scanner |
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| Wang Yueming
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Wang Jianyu.Imaging motion model and compensation methods of spaceborne opto-mechanical scanner[J].Infrared and Laser Engineering,2012,41(4):952-957. |
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| Authors: | Wang Yueming Wang Jianyu |
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| Affiliation: | 1,2(1.Shanghai Institute of Technical Physics,Chinese Academy of Sciences,Shanghai 200083,China; 2.Key Laboratory of Infrared Detecting & Imaging Technology,Chinese Academy of Sciences,Shanghai 200083,China) |
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| Abstract: | The rotation of the earth plays an important role in the distortion of spaceborne opto-mechanical scanner′s image.The distortion results from imaging motion.The relationship among image distortion,latitude and instrument operating parameter was described in detail.A formula for distortion calculation of sun-synchronous obit scanner was given.To avoid adjacency effect resulting from software distortion correction,two methods for imaging motion compensation were presonted.They are optical compensation scanning and compensation sampling.The characteristics and feasibilities of the two methods were analyzed.The simulation result was also given in the end.The study will benefit the improvement of spaceborne scanner′s image quality. |
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| Keywords: | spaceborne opto-mechanical scanner compensation for imaging motion distortion correction |
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