Evaluation of 3D Geo-positioning Based on Bias-compensated RPCs for Across-track QuickBird Stereo Imagery
This paper investigates the geo-positioning accuracy of across-track QuickBird stereo imagery in Shanghai, China, where the terrain relief is very low about 3m but with very high buildings up to 380m.The rational function model (RFM) and the bias-compensated RFM with different parameters are employed to do accuracy analysis with different configurations of ground control points (GCPs).The systematic errors in vendor provided RPCs are revealed and discussed.The results of bias-compensated RFM show that different strategies in terms of the number of GCP and different geometric correction methods should be taken into consideration in order for a better and reasonable positioning accuracy in the three directions.The results also show that the best accuracy of 0.6m in horizontal direction and 0.8m in vertical direction can be acquired by the second-order polynomial model when GCPs are more than 8.
Ground Control Point (GCP) High-Resolution Satellite Imagery (HRSI) Rational Functional Model (RFM) Rational Polynomial Coefficients (RPCs) Virtual Reference Station (VRS)
Weian Wang Shuying Xu Gang Qiao
College of Surveying and Geo-Informatics,Tongji University,Shanghai 200092,China;Center for Spatial College of Surveying and Geo-Informatics,Tongji University,Shanghai 200092,China;Center for Spatial
国际会议
上海
英文
1958-1964
2012-10-19（万方平台首次上网日期，不代表论文的发表时间）