| FY-2卫星S-VISSR数据几何纠正研究 |
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| 引用本文： | 刘良明,叶沅鑫,范登科,徐琪.FY-2卫星S-VISSR数据几何纠正研究[J].武汉大学学报(信息科学版),2012,37(4):384-388. |
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| 作者姓名： | 刘良明 叶沅鑫 范登科 徐琪 |
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| 作者单位： | 武汉大学遥感信息工程学院,武汉市珞喻路129号,430079 |
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| 基金项目： | 国家教育部高校博士研究生自主科研资助项目，国家科技支撑计划资助项目 |
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| 摘 要： | 提出了一种简单高效的FY-2卫星S-VISSR数据的几何纠正方法。该方法以FY-2标称投影图像（NOM）经纬度对照表作为参考图像，FY-2卫星S-VISSR数据作为输入图像，首先利用S-VISSR数据提供的简化格网数据在两幅图像间获取同名点，然后根据同名点寻找两幅图像间的几何变换模型，最后对S-VISSR数据进行几何纠正。实验表明，利用该方法能够快速地完成对FY-2E和FY-2D卫星S-VISSR数据的几何纠正，其精度达到了1个像素左右。
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| 关 键 词： | FY-2 S-VISSR 几何纠正 精度分析 |
Study on Geometric Rectification for FY-2 S-VISSR Data |
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| LIU Liangming,YE Yuanxin,FAN Dengke,XU Qi.Study on Geometric Rectification for FY-2 S-VISSR Data[J].Geomatics and Information Science of Wuhan University,2012,37(4):384-388. |
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| Authors: | LIU Liangming YE Yuanxin FAN Dengke XU Qi |
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| Institution: | 1(1 School of Remote Sensing and Information Engineering,Wuhan University,129 Luoyu Road,Wuhan 430079,China) |
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| Abstract: | This Paper proposed a simple and effective geometric rectification approach for FY-2 S-VISSR data.In this Method,FY-2 normalized projective latitude and longitude comparison Table is used as the reference image,while FY-2 S-VISSR data is used as the input image.Firstly,the tie points between the two images are found by the simplified mapping grid data of S-VISSR data;Secondly,the geometric transformation model between the two images is estimated by using the tie points;Finally,the input image is rectified by the fixed geometric transformation.The experiments demonstrated that FY-2 S-VISSR data could be rectified effectively by using the proposed approach,and the accuracy of rectification achieved one pixel or so. |
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| Keywords: | FY-2 S-VISSR geometric rectification accuracy analysis |
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