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

作　　者：贾浩文 杨鹏举 JIA Haowen;YANG Pengju(School of Physics and Electronic Information,Yan’an University,Yan’an 716000,China)

机构地区：[1]延安大学物理与电子信息学院,陕西延安716000

出　　处：《延安大学学报（自然科学版）》2024年第1期96-101,共6页Journal of Yan'an University：Natural Science Edition

基　　金：国家自然科学基金项目(62061048,62261054,61861043);陕西省重点研发计划项目(2023-YBGY-254)。

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。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 

分 类 号：TN957.52[电子电信—信号与信息处理]