基于幅度调制的SAR相干压制干扰方法  

A Method of SAR Coherent Repressive Interference Based on Amplitude Modulation

作　　者：李田[1] 彭世蕤[2] 王广学[2] 杨科锋[2] 

机构地区：[1]空军预警学院研究生管理大队,武汉430019 [2]空军预警学院信息对抗系,武汉430019

出　　处：《现代雷达》2014年第5期20-25,共6页Modern Radar

摘　　要：基于相干压制干扰原理,分析了传统相干干扰的缺点,并结合最大熵理论,提出了两种对干扰信号幅度进行噪声调制的相干干扰方法。文中阐述了幅度调制序列的生成方法,选取适当的评估指标,设定仿真实验并分别计算这两种相干压制干扰方法和传统相干压制干扰方法的干扰效果评估值。通过分析和对比评估结果可得,两种经过噪声幅度调制的相干压制干扰方法比传统相干压制干扰更具优越性。Based on the principle of coherent interference suppression, this paper analysed the shortcomings of traditional coherent interference, and proposed two coherent repressive interference methods based on modulating the interference signal amplitude com- bining maximum entropy theory. Generation method of amplitude modulation sequence is expounded. The effets assessed value of these two coherent repressive interference methods and traditional methods coherent repressive interference is figured out by selec- ting the appropriate assesment methods and setting the simulation test. Two methods of noise amplitude modulated coherent interfer- ence suppression are more advantageous than the conventional coherent interference.

关 键 词：噪声 幅度调制 相干干扰 压制干扰 

分 类 号：TN974[电子电信—信号与信息处理]