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基于QuickBird影像生成菲尔德斯半岛数字正射影像图及其精度评价 被引量:2

DOM GENERATION AND PRECISION ANALYSIS OF FILDES PENINSULA BASED ON QUICKBIRD IMAGES
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摘要 南极菲尔德斯半岛地区是世界各国进行极地科学考察的重要地区,该地区的高精度数字正射影像图(DOM)给极地考察提供了重要的信息支持。由于受地面控制点数量、分布以及DEM精度的影响,该地区已获取的数字正射影像图精度不能满足高精度应用需求。对此,本文讨论了利用QuickBird影像制作该地区数字正射影像图的方法,基于QuickBird影像,利用中国第25次南极考察队采集的地面控制点对正射纠正模型进行修正,并结合1∶20000比例尺地形图提取的DEM对影像进行投影差改正。误差分析表明,纠正后影像平面精度优于1m,满足1∶5000比例尺遥感平面图制图要求。 Fildes Peninsula is one of the most significant regions for polar scientific research. The high resolution digital orthoimage map( DOM) of this region provides important information. However,influenced by the quality of ground control points( GCPs) and DEM ,the existed DOMs are inadequately precised for high accuracy application. Regarding this,this paper addresses DOM generation based on QuickBird images of Fildes Peninsula. Combined with the GCPs collected during CHINARE-25 and the DEM created from the 1: 20000 topographic map, the ortho rectification model and height displacement are meliorated. The result shows that the plane error of the image is less than 1 meter,which can meet the requirements of 1: 5000 remote sensing cartographic map.
出处 《极地研究》 CAS CSCD 北大核心 2010年第4期397-403,共7页 Chinese Journal of Polar Research
基金 国家高技术研究发展计划(863计划)专题课题(2009AA12Z133) 国家自然科学基金(40606002) 国家测绘局南极考察地区基础测绘项目(1469990711109-1)资助
关键词 QUICKBIRD影像 菲尔德斯半岛 数字正射影像图(DOM) QuickBird image Fildes Peninsula DOM
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