Abstract：Geometrical imaging models and calculations of orientation parameters are the main factors affecting the positioning of stereo Synthetic Aperture Radar (SAR) images. For accurate positioning with squint stereo SAR images and less Ground Control Points (GCPs), a positioning algorithm with one GCP is designed. In this algorithm, the position and velocity of the radar antenna phase center are derived using orbit parameters, and the close range and Doppler centroid of the SAR images are compensated by one GCP. Thus, accurate orientation parameters are obtained and accurate positioning with stereo SAR images is completed. Airborne SAR images acquired by the Chinese Academy of Surveying and Mapping are used in experiments. The positioning errors of the checkpoints are calculated and analyzed, and it verified the accuracy and effectiveness of the proposed method.
张红敏, 靳国旺, 徐 青, 李向英. 利用单个地面控制点的SAR 图像高精度立体定位[J]. 雷达学报, 2014, 3(1): 85-91.
Zhang Hong-min, Jin Guo-wang, Xu qing, Li Xiang-ying. Accurate Positioning with Stereo SAR Images and One Ground Control Point. JOURNAL OF RADARS, 2014, 3(1): 85-91.
