摘要
针对IRS-P5卫星影像的误差来源,分析了基于RPC的区域网平差数学模型,实验结果表明:仿射变换模型能有效地消除RPC模型的误差。基于EGM2008重力场模型的移去恢复法,显著提高了正常高的精度,节约了大量的水准测量工作。在山地和高山地,2.5 m分辨率的IRS-P5卫星影像可满足1∶10 000比例尺地形图的精度要求。
From the errors source of IRS-P5 Satellite Images,block adjustment model of satellite images described by Rational Polynimial Coefficients was discussed.Test results showed that the errors of RPC model could be removed with effect by the affine model.The normal height accuracy of control point was improved significantly by the remove-restore method based on EGM2008,and a lot of leveling was saved.IRS-P5 Satellite Images with resolution of 2.5m can meet the topographic mapping accuracy requirements of a scale of 1:10 000 in mountain and high mountain.
出处
《地理空间信息》
2012年第3期27-30,53,共5页
Geospatial Information
基金
湖北省水利重点科技资助项目(HBSHL201029)
