机载SAR原始回波数据多普勒参数估计的比较  

Comparison of different kinds of Doppler parameter estimation from raw data of airborne SAR

作　　者：李绍滨[1] 刘银中[1] 

机构地区：[1]哈尔滨工业大学电子与通信工程系,哈尔滨150001

出　　处：《哈尔滨工业大学学报》2006年第11期1910-1914,共5页Journal of Harbin Institute of Technology

摘　　要：首先阐明几种多普勒参数估计方法的原理,然后利用这些方法对机载SAR实测原始回波数据进行多普勒参数估计,最后把估计得到的多普勒参数值代入到RD算法中来处理机载SAR原始回波数据.通过比较雷达图像质量,得到了适用于机载SAR回波数据的多普勒参数估计方法.This paper elucidates the principles of a few methods to estimate doppler parameter, and then, estimates the doppler parameter from the raw echo data with the methods. In the end, the estimated values of doppler parameters are applied to the RD algorithm to process Through comparing the quality of radar images, the estimation the raw echo data that airborne SAR measured. methods applicable to the radar echo data of airborne SAR are obtained.

关 键 词：多普勒中心频率 多普勒调频率 时频分析 信息熵 分数阶傅里叶变换 

分 类 号：TN958[电子电信—信号与信息处理]