Geometric Rectification of Airborne Linear Array Pushbroom Imagery Supported by INS/DGPS System

LIU Jun~1; ZHANG Yong-sheng~1; WANG Dong-hong~1; XU Wei-ming~2

doi:10.11834/jrs.20060104

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Geometric Rectification of Airborne Linear Array Pushbroom Imagery Supported by INS/DGPS System
Issue 1, Pages: 21-26(2006)
Published：2006
DOI： 10.11834/jrs.20060104
稿件说明：

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[1]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(01):21-26. DOI： 10.11834/jrs.20060104.

LIU Jun~1, ZHANG Yong-sheng~1, WANG Dong-hong~1, et al. Geometric Rectification of Airborne Linear Array Pushbroom Imagery Supported by INS/DGPS System[J]. Journal of Remote Sensing, 2006, (1): 21-26. DOI： 10.11834/jrs.20060104.

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。PH I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。

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.