基于距离多普勒算法的星载SAR实测数据成像研究
Imaging research of spaceborne SAR measured data based on Range Doppler algorithm
贾浩文 1杨鹏举1
作者信息
- 1. 延安大学 物理与电子信息学院,陕西 延安 716000
- 折叠
摘要
针对合成孔径雷达(SAR)成像问题,基于点目标散射模型,在信号频谱分析的基础上推导了距离多普勒(RD)成像算法,通过点目标SAR成像仿真验证了该成像算法的有效性.在此基础上实现了RADARSAT-1实测数据的星载SAR成像,并与卫星遥感地图对应区域进行了比对,结果表明二者的海岸轮廓线及醒目建筑物形状基本吻合,验证了RD成像算法在处理星载SAR实测数据中的有效性和高效性.
Abstract
Aiming at the imaging problem of synthetic aperture radar(SAR),the Range Doppler(RD)imaging algorithm was derived based on the point target scattering model and the signal frequency spectrum analysis.The ef-fectiveness of the imaging algorithm was verified by point target SAR imaging simulation.On this basis,spaceborne SAR imaging of the measurement data of RADARSAT-1 was realized,and the comparision with the corresponding region of the satellite remote sensing map showed that the coastal contour and the shape of striking buildings of the two were basically consistent,which the effectiveness and efficiency of the RD imaging algorithm was verified in processing spaceborne SAR measured data.
关键词
合成孔径雷达/距离多普勒算法/距离徙动校正/实测数据Key words
synthetic aperture radar/Range Doppler algorithm/range cell migration correction/measurement data引用本文复制引用
基金项目
国家自然科学基金(62061048)
国家自然科学基金(62261054)
国家自然科学基金(61861043)
陕西省重点研发计划(2023-YBGY-254)
出版年
2024
NETL
NSTL
万方数据