CAJ | 학술논문

几何构像模型和定向参数解算方案的选择是实现SAR图像高精度立体定位的关键。该文针对稀少控制下斜侧视 SAR 图像高精度定位难题，设计了利用单个地面控制点的 SAR 图像立体定位方案。该方案利用轨道参数获取成像瞬间天线相位中心的位置、速度，并利用一个地面控制点标定近距延迟和多普勒中心频率，实现定向参数的精确解算和SAR图像的高精度立体定位。采用中国测绘科学研究院获取的机载SAR图像进行了立体定位实验，统计分析了其定位误差，验证了该文方法的精确性和有效性。
궤하구상모형화정향삼수해산방안적선택시실현SAR도상고정도입체정위적관건。해문침대희소공제하사측시 SAR 도상고정도정위난제，설계료이용단개지면공제점적 SAR 도상입체정위방안。해방안이용궤도삼수획취성상순간천선상위중심적위치、속도，병이용일개지면공제점표정근거연지화다보륵중심빈솔，실현정향삼수적정학해산화SAR도상적고정도입체정위。채용중국측회과학연구원획취적궤재SAR도상진행료입체정위실험，통계분석료기정위오차，험증료해문방법적정학성화유효성。
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.