改化的有理函数模型在卫星影像定位中的应用  

Application of Optimized Rational Function Model in High Resolution Stereo Pair Geometric Positioning

作　　者：王鹏生[1] 贺少帅[2] 刘排英[1] 

机构地区：[1]石家庄铁路职业技术学院测绘工程系,河北石家庄050041 [2]中国航天空气动力技术研究院,北京100074

出　　处：《地理空间信息》2017年第1期74-76,共3页Geospatial Information

基　　金：河北省教育厅青年基金资助项目(2011134)

摘　　要：近年来,鉴于高分辨率卫星传感器参数的保密性和构建模型的复杂性常使用有理函数模型进行高分辨率卫星高精度几何定位。但是,在解算有理函数模型参数时,在影像的行和列方向上会产生较大的系统误差,从而影响几何定位精度。因此,提出了一种基于像方坐标系的有理函数优化模型,并将其用于IRS-P5立体像对几何定位。结果表明,在地形较复杂的地区定位效果改善明显,可将该模型推广用于实现高分辨率卫星影像高精度几何定位。In recent years, in view of the confidentiality of high resolution satellite sensor parameter, the rational function model was used in geometric positioning with high resolution satellite imagery. However, in the process of applying the rational function model in the geometric positioning, large systematic errors may occur in the rows and columns, which influence the image geometric positioning accuracy. Therefore, this paper presented an optimized rational function model in the image coordinate system. In order to prove its effectiveness, the optimized model was used in IRS-P5 stereo pair geometric positioning. The results show that, especially in the mountain areas, the geometric positioning accuracy of the optimized model is significantly improved. So that the optimized rational function model can be extensively used in the high accuracy geometry positioning models of similar high resolution satellite image.

关 键 词：有理函数模型 仿射变换 优化模型 立体影像 几何定位 

分 类 号：P228[天文地球—大地测量学与测量工程]