摘要
针对参数模型的局限性,提出了利用半参数模型的卫星影像定位方法。利用SPOT-5、IKONOS影像进行实验,分别采用严格成像模型和有理函数模型进行立体定位,实验结果表明:无控制点的情况下,采用半参数模型进行立体定位,SPOT-5的估计结果普遍优于参数估计,IKONOS的平面点位误差较小,其平面点位的半参数模型估计精度与参数模型基本相当,而高程的半参数模型估计精度要优于参数模型。
Given the existing limitations of the parametric model on processing satellite ima- ges, this article proposes a new method for satellite image geometric processing based on the semi-parametric model. Stereo positioning by a rigid sensor and RFM models were tested u- sing SPOT-5 and IKONOS images. Experimental results reveal that for SPOT-5 images with no control point, the semi-parametric model is better than parametric model in most cases, while for IKONOS images the position errors of planar points in the semi-parametric model is almost as great as that of parametric model. However, the elevation results from the semi- parametric model is better than that of parametric model.
出处
《武汉大学学报（信息科学版）》
EI
CSCD
北大核心
2013年第11期1290-1293,1316,共5页
Geomatics and Information Science of Wuhan University
基金
国家科技支撑计划资助项目(2012BAJ23B03)
国家自然科学基金资助项目(41001305)
地理空间信息工程国家测绘地理信息局重点实验室开放课题资助项目(201132)
关键词
几何定位
半参数估计
成像模型
geometric positioning of satellite image
semi-parametric model estimation
sen- sor model
