基于SAR回波数据的置乱干扰分析与仿真研究

对被干扰的卫星下传数据进行检测和恢复是空间信息对抗的重要课题之一。文章针对SAR被干扰下传回波数据，分析研究了数据置乱干扰的检测与恢复问题。首先分析了SAR下传回波数据特点及其成像机理，给出了回波数据置乱干扰的原理；其次通过仿真，分析了基于回波实部与虚部变换的数据置乱干扰对SAR图像数据的影响，并对干扰效果进行了评估；最后根据回波实部与虚部变换所产生的干扰统计特征，给出了相应的检测与恢复方法。

Study of Data Disorder Jamming and Analysis of Simulation Based on the Image Data of SAR

To detect and recover the jamming downlink data of SAR is one of the important tasks of space information counter. This paper aims at the jamming downlink echo data of SAR, analyses and studies the method of detecting and recovering the disorder jamming data. Firstly, it analyses and studies the characteristic of downlink data and the imaged model of the echo data of SAR, the analy- sis principium of echo data disorder of SAR has been made. Then, it simulates and evaluates the da- ta disorder jamming which based on the transformed between the real and image part of the echo sampling information. Introduces and simulates the method of detecting and recovering at last.