低频UWBSAR辐射校准模型  

Radiometric Calibration Model of Low Frequency UWBSAR

作　　者：邹鲲[1] 董臻[1] 梁甸农[1] 

机构地区：[1]国防科技大学电子科学与工程学院,湖南长沙410073

出　　处：《国防科技大学学报》2006年第1期38-42,共5页Journal of National University of Defense Technology

基　　金：国家部委基金资助项目(41307020203)

摘　　要：低频超宽带合成孔径雷达(Ultra Wide Band Synthetic Aperture Radar,UWBSAR)的辐射校准是系统研制和应用过程中必须面对的课题。低频UWBSAR的特点使得常规SAR辐射校准技术不再适用。充分考虑校准参数随频率和方位角的变化,给出适合该系统的辐射校准方法,得到低频UWBSAR图像辐射校准模型。利用该模型,对系统辐射校准误差进行了分析。Radiometrie calibration is considered as an important and inevitable problem in the development and application of low frequency ultra wide band synthetic aperture radar （UWBSAR） system. Due to the charactefistics of the UWSAR, the calibration procedure developed for the regular SAR is no longer feasible. With a careful eomideration of the calibrating parameters which vary with the change of the frequency and the aspect angle, this paper proposes that the radiometric calibration method is applicable to the low frequency UWBSAR and a model of radiometric calibration is presented. With the help of such a model, the analysis of the system calibration error was conducted.

关 键 词：低频超宽带合成孔径雷达 辐射校准 校准误差 

分 类 号：TP957[自动化与计算机技术]