机载雷达立体影像定位方法的比较及改进

由于合成孔径雷达(SAR)具有全天候的成像能力,在地质、生态、水文、海冰和测绘等诸多领域有着广泛的应用。主要研究了雷达立体影像对获取地面三维坐标的方法,分析了目前所广泛使用的三种立体定位模型的优缺点,为利用雷达立体影像对获取数字高程模型提供了选择依据,并对其中的零距离-多普勒模型进行了改进,最后利用机载雷达影像数据对此算法进行了实验研究,取得了较好的实验结果。

Comparison and Improvement of Position Methods for Airborne Stereo SAR Images

Synthetic aperture radar(SAR) is broadly applied in geology,ecology,hydrology,sea ice,topography map,because of its imaging capability all weather day and night.To generate DEM from stereo SAR image,there are three kinds of models mostly used.In this paper,the three kinds of position models had been introduced and compared.Based on that,we can find the advantages and defects of every method,which can give us a befitting choice when we generate DEM from Stereo SAR image.Predigesting the position methods and improving the precisions,an improved algorithm is given.At last,the validity of this algorithm is proved with airborne SAR data and better experiences results are acquired.