基于RPC模型的天绘一号卫星影像高精度立体定位  

High Precision Stereo Positioning of TH-1 Mapping Satellite Image Based on RPC Model

作　　者：简剑锋[1,2] 李新涛 胡燕[1,2] 

机构地区：[1]西安测绘研究所,陕西西安710054 [2]地理信息工程国家重点实验室,陕西西安710054

出　　处：《测绘科学与工程》2017年第5期42-46,共5页Geomatics Science and Engineering

摘　　要：本文在分析天绘一号卫星影像RPC模型的基础上，研究了基于三线阵立体影像的RPC模型解算算法，提出了少量地面控制点条件下RPC模型的精化方法，并通过实验对不同地面控制点条件下天绘一号卫星影像的立体定位精度进行比较与分析。实验结果表明，在无地面控制点条件下，天绘一号卫星影像定位精度满足1：5万地形图成图精度要求；利用1个地面控制点，可较大提高卫星影像的平面定位精度；利用3个地面控制点，卫星影像的平面与高程定位精度可以达到最佳。Based on the analysis of RPC model of the TH-1 mapping satellite images, the resolving algorithm for RPC model of three line stereo images is studied, and a refined RPC model method with a few ground control points is presented in this pa- per. The stereo positioning accuracy of the TH-1 image with different amount of ground control points are compared and analyzed. The result shows that the positioning accuracy of the TH-1 images without any ground control points can achieve the requirement of 1 ： 50000 scale topographic map ; the plane positioning accuracy is improved greatly with one ground control point ; the plane and elevation positioning accuracy can achieve the best level with three ground control points.

关 键 词：天绘一号 RPC模型 立体定位 

分 类 号：P231[天文地球—摄影测量与遥感]