摘要
分析了中国光学卫星影像的严密成像几何模型,并采用有理函数模型(RFM)拟合严密成像几何模型,分别对"资源二号"两景影像(平原与山区)和"遥感二号"一景影像进行了几何纠正试验。试验中,参考相应地区1∶10 000数字正射影像(DOM)选取一定数量的控制点用于精化有理函数模型参数,结合相应地区1∶10 000数字高程模型(DEM)对影像进行正射纠正,纠正精度反映了RFM拟合严密成像几何模型的正确性,但同时也反应了中国光学卫星与法国、美国光学卫星在内检校工作上的差距。
In this paper,the strict imaging model of domestic optical satellite image is analyzed.RFM is utilized to fit strict imaging model.Some experiments of geometric rectification based on ZY-2 images and YG-2 images are conducted.A few GCPs are selected according to the 1∶10 000 DOM of the corresponding area in order to improve the accuracy of RFM.Then ortho-rectification is implemented relying on the 1∶10 000 DEM of the corresponding area.The accuracy of rectified images shows the correctness of using RFM to fit strict imaging model and the gap on inner-calibration between overseas optical satellites and domestic optical satellites.
出处
《航天返回与遥感》
2010年第4期51-57,共7页
Spacecraft Recovery & Remote Sensing
基金
国家自然科学基金(40801178)
国家863重点项目(2007AA120203)
关键词
严密成像几何
有理函数模型
几何纠正
光学卫星
Rigorous sensor model Rational function model Geometric rectification Optical satellite
