摘要
由于具备立体测量功能的高分辨率卫星不断增多,使利用星载遥感影像立体像对获取DEM逐渐成为可能。与传统航空摄影测量相比,星载方式平台稳定,其姿态控制与测量精度较高,能充分保证3D测量的精度。对Quick-BirdI、KONOSS、POT5 3种卫星相似的立体成像方式进行研究,利用星历和姿态内插方法确定多中心投影的外方位元素初始值,利用前、后视共线方程及误差方程构建通用的立体测量数学模型,最后由若干控制点解算出立体测量所需定向参数。以SPOT5数据为例,进行外方位元素解算及模型误差分析,结果表明模型具有较好的3D测量精度。
In order to make good use of different satellite high resolution stereo data （QuickBird, IKONOS,and SPOT5 HRS DATA） to stereo mapping, a unified mathematic model of satellite stereophotogrammetry was established. According to their similar stereo imaging mode, through interpolating of sensor location and velocity based on ephemeris, the initial values of exterior orientation parameters of scene center projection were determined. Also, the front and back vision collinear equations and the relative coordinates error equation were used to calculate orientation parameters based on a few of ground control points. In this paper,SPOT5 HRS images was used as a case to test the model and analyze the errors from the calculated results. Experiments prove that the model of stereo mapping is right, and it can achieve a good precision.
出处
《地理与地理信息科学》
CSCD
北大核心
2006年第6期17-20,共4页
Geography and Geo-Information Science
基金
国家自然科学基金项目(40371087)
国防科技工业民用专项科研技术研究项目
关键词
高分辨率
遥感影像
立体成像
外方位元素
high resolution
satellite stereophotogrammetry
stereo mapping
exterior orientation parameters
