侧视角和DEM精度对SPOT5正射影像的影响分析  

Effect of Incidence Angle and Accuracy of DEM on Quality ofSPOT5 Ortho-image Map

作　　者：王雪军[1] 付晓[2] 徐茂松[1] 

机构地区：[1]国家林业局调查规划设计院,北京100714 [2]北京联合大学应用文理学院,北京100083

出　　处：《林业科学研究》2008年第z1期130-133,共4页Forest Research

基　　金：国家自然科学基金资助项目“基于森林资源清查的碳循环规律研究”(编号30571492)共同资助

摘　　要：Taking two neighboring scenes SPOT5 satellite data of the Liupanshui City of Guizhou Province,based on the scale of 1∶10 000 DRG as ground control points of reference and different scales accuracy of the DEM for the images ortho-rectification which compared test,it was analyzed in detail the effect of incidence angle and different scales accuracy of the DEM for the accuracy of the results of SPOT5 ortho-image.On the analysis,it was found that the incidence angle was an important factor leading to the "layover" in SPOT5 ortho-image.It will provide the important basis for the next step of eliminating this phenomenon.Taking two neighboring scenes SPOT5 satellite data of the Liupanshui City of Guizhou Province,based on the scale of 1∶10 000 DRG as ground control points of reference and different scales accuracy of the DEM for the images ortho-rectification which compared test,it was analyzed in detail the effect of incidence angle and different scales accuracy of the DEM for the accuracy of the results of SPOT5 ortho-image.On the analysis,it was found that the incidence angle was an important factor leading to the 'layover' in SPOT5 ortho-image.It will provide the important basis for the next step of eliminating this phenomenon.

关 键 词：数字正射影像 SPOT5 DEM 侧视角 正射校正 

分 类 号：TP75[自动化与计算机技术—检测技术与自动化装置]