机载超高分辨率SAR内定标技术研究  

A Study on Internal Calibration Technique for Airborne Super-resolution SAR

作　　者：贺彩琴[1] 李敏慧[1] 雷万明[1] 朱力[1] 

机构地区：[1]南京电子技术研究所,南京210039

出　　处：《现代雷达》2016年第2期15-18,共4页Modern Radar

摘　　要：首先,研究了合成孔径雷达的内定标工作原理,分析了发射定标实测信号;然后,给出了误差补偿前后的一维距离图像性能指标,提出了利用发射定标数据作为参考函数进行实际数据成像处理的方法;最后,成功应用于机载试飞中,获得了高质量合成孔径雷达图像,并证明了该方法的有效性。Firstly, principles of internal calibration technique are introduced in airborne synthetic aperture radar （ SAR） , and the real-time transmission signal data of SAR send calibration is analysed.Then, the performance indicators of one dimensional range image are given with and without the systematic errors compensation, meanwhile, a method is proposed using the real-time calibration data as reference functions in SAR image processing.Finally, the successful radar flight test and the high resolution range profiles have proved the feasibility of this method.

关 键 词：内定标 脉冲压缩 机载合成孔径雷达 线性调频信号 

分 类 号：TN958[电子电信—信号与信息处理]