摘要
在斜距多普勒定位模型和高精度GPS轨道数据的基础上,提出了一种稀疏控制点(只需要3个控制点)的修轨算法,从而实现高精度星载SAR图像几何校正。该方法通过简化轨道参数模型,减少控制点数量,在保证校正精度的基础上,提高了算法效率。
A modified orbit algorithm with sparse ground control points （only three points）for high accuracy geo-rectification of space-borne SAR image is proposed, which is based on range-doppler position model and high precision orbit data of GPS. The algorithm decreases the number of ground control points through simplifying the orbit parameter model, so it can improve the work efficiency on the basic of high accuracy correction.
出处
《武汉大学学报（信息科学版）》
EI
CSCD
北大核心
2013年第3期262-265,277,共5页
Geomatics and Information Science of Wuhan University
关键词
斜距-多普勒
稀疏控制点
修正轨道
几何校正
range-doppler
sparse ground control points
modified orbit
geo-rectification
