摘要
对干扰信号类型的分析是合成孔径雷达(SAR)干扰技术研究中的关键问题之一。首先,根据干扰信号相干性的不同,讨论了三种不同干扰类型及其特点;其次,通过建立SAR信号处理模型,在基本雷达方程的基础上对雷达回波信号和干扰信号进行功率分析,得到相应的干扰功率和干信比的表达式;最后,仿真分析了三种干扰类型在不同覆盖区域上的干扰功率变化。由仿真结果可知,在SAR图像的局部区域上施加部分相干干扰具有一定的优势。
Analysis of different kinds of jamming signal is one of key issues in studying SAR jamming technique. Firstly,three kinds of different jammings and their features are discussed respectively based on different coherence of the jamming signal;and then,power of the radar echo signal and jamming signal are analyzed to achieve expres-sion for corresponding jamming power and jamming -to -signal ratio on basis of radar equation by developing SAR signal processing model;finally,jamming power changing of three kinds of jamming in different coverage are ana-lyzed by simulation.The simulation result shows that certain advantage can be achieved by exerting partially coher-ent jamming on partial area of SAR image.
出处
《火控雷达技术》
2016年第1期27-33,共7页
Fire Control Radar Technology
关键词
合成孔径雷达
噪声压制干扰
欺骗干扰
部分相干干扰
SAR （Synthetic Aperture Radar）
Noise Suppression Jamming
deceptive jamming
partially coherent jamming
作者简介
俞道滨（1988-），男，博士研究生．主要研究方向为空间信号处理。
