| INS／DGPS支持的机载线阵推扫影像几何校正 |
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| 引用本文： | 刘军,张永生,王冬红,徐卫明.INS／DGPS支持的机载线阵推扫影像几何校正[J].遥感学报,2006,10(1):21-26. |
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| 作者姓名： | 刘军 张永生 王冬红 徐卫明 |
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| 作者单位： | 1. 信息工程大学,测绘学院,河南,郑州,450052
2. 中国科学院,上海技术物理研究所,上海,200083 |
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| 摘 要： | 论述了利用INS／DGPS系统的导航输出计算外方位元素的原理，介绍了行方位数据支持下机载线阵CCD影像直接和间接法几何校正的基本方法，重点分析并解决了直接法纠正中的目标定位、灰度重采样及间接法校正中最佳扫描行的确定问题。PHI高光谱影像的实验结果表明，文中的校正算法可达到优于1．5m的绝对定位精度及0．7m的相对精度。
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| 关 键 词： | 线阵CCD 几何校正 外方位 扫描行 |
| 文章编号： | 1007-4619(2006)01-0021-06 |
| 收稿时间： | 2004-12-24 |
| 修稿时间： | 2005-06-17 |
Geometric Rectification of Airborne Linear Array Pushbroom Imagery Supported by INS/DGPS System |
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| LIU Jun,ZHANG Yong-sheng,WANG Dong-hong and XU Wei-ming.Geometric Rectification of Airborne Linear Array Pushbroom Imagery Supported by INS/DGPS System[J].Journal of Remote Sensing,2006,10(1):21-26. |
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| Authors: | LIU Jun ZHANG Yong-sheng WANG Dong-hong and XU Wei-ming |
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| Institution: | 1. Institute of Surveying and Mapping, Information Engineering University, Henan Zhengzhou 450052, China; 2. Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China |
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| Abstract: | The computation of exterior orientation elements using the navigation outputs of INS/DGPS system is addressed, then the direct and indirect geometric rectification of airborne linear array CCD imagery based on the line orientation data is introduced. The emphasis is put on the positioning and resampling problems in the direct rectification and the determination of the best scan line in the indirect rectification. Test results using PHI hyperspectral image prove that the rectification algorithm developed in this paper can reach the absolute positioning accuracy of better than 1.5 meters and the relative accuracy of 0. 7 meters. |
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| Keywords: | INS/DGPS |
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