摘要
卫星长期在轨运行受到卫星热变形、焦距变化、星敏感器测量低频误差、轨道测量误差等因素的影响，使有理函数模型存在一定系统误差，导致相邻轨道影像立体模型之间存在较大的接边误差，给大区域立体测图造成困难。本文通过利用多个轨道天绘一号卫星影像之间的约束关系对定向参数的系统误差进行补偿，在消除接边误差的同时，提升了区域影像的整体定位精度，达到了与带控制点平差相当的定位精度。
Affected by thermal deformation, focal length change, low frequency error of satellite sensor, orbit measurement error and other factors, some systematic errors exist in the rational function models, which cause a great edge error between the adjacent track image stereo models and make large area stereo mapping difficult. In this paper, the systematic error of orientation parameter is compensated by the constraint relationship between multiple tracks of TH - 1 to eliminate the edge error. As a result, the overall positioning accuracy of the regional image is improved, and the accuracy is equivalent to the adjustment with control points.
出处
《测绘科学与工程》
2015年第6期47-52,共6页
Geomatics Science and Engineering
基金
地理信息工程国家重点实验室开放基金资助项目（SKLGIE2013-Z-3-1）.
