摘要
从SAR自身的抗干扰角度出发,在分析了现有干扰方法的基础上,提出了一种新的时、频、多普勒域多维有效覆盖的类杂波干扰。采用零记忆非线性变换法模拟产生了相关对数正态分布、Weibull分布和混和K分布杂波,并采用基于数字储频式的类杂波干扰实现方法,最后通过仿真实验验证了该方法对于SAR的干扰有效性。由于该方法采用和雷达回波相似的干扰信号,能够获得SAR成像处理增益,降低干扰功率,相对于欺骗干扰而言又可以降低对估计参数的精度要求,可实现性强。
The paper considers the anti-jamming of SAR, based on the analyzing jiamming methods in existence, puts forward a new jamming which is a time, frequency and dopple fields multidimensional-overcast similar clutter＇s jamming. Through the Zero Memory NonLinearity （ZMNL） method, generates of the correlated log normal, Weibull and K-distributed clutter vectors, and deeply researchs the method of similar clutter jamming based on the digital frequency memorizer. Finally, this method is proved to be effectual to SAR jamming through the matlab emulators. By using the similar jamming signal to the SAR, the method can receive the SAR＇s process gains and reduce the jamming energy. Compared with cheat jamming, it may reduce the need for the parameters＇s precision, so it is realizable.
出处
《电子科技大学学报》
EI
CAS
CSCD
北大核心
2005年第6期739-742,共4页
Journal of University of Electronic Science and Technology of China
基金
国防科研基金资助项目
关键词
类杂波干扰
多维覆盖
数字储频
非线性变换法
similar clutter＇s jamming
multidimensional overcast
digital frequency memorizer
