2. 吉林水利电力职业学院，长春130000

数据，对影像进行基于有理函数模型与多项式模型的几何校正，并运用事先布置好的检查点与校正后

影像上的同名地物点进行精度分析。结果表明，利用地面控制点的几何校正中，有理函数模型的校正

精度可达3. 0 m ( 1. 5 个像元) ，多项式模型校正精度为4. 0 m ( 2 个像元) ，利用国情数据进行几何校

正的平面位置精度可达4. 9 m ( 2. 5 个像元) ，有理函数模型的校正精度最高，这些校正方法精度结果

满足国家1∶ 100 00 的数字正射影像的实际应用要求。

2. Jilin Polytechnic of Water Ｒesources and Electric Engineering，Changchun 130000，China

Gaofen － 6 image，national geographic data and GPS data are gathered，and the image is geometrically corrected by rational function model and polynomial model，respectively． Besides，precision analysis is carried out using checkpoints

and the corresponding points on the image． The results show that，with the use of ground control points，correction error for rational function model is within 3. 0 m ( 1. 5 pixels) and correction error for the polynomial model is within 4. 0 m ( 2 pixels) ． The correction error of polynomial model by analyzing national geographic data is within

4. 9 m ( 2. 5 pixels) ． Model of rational function can acquire the highest correction accuracy． The accuracy results from those correction methods meet the requirements for Digital Orthophoto Map of 1∶ 10 000 in China．