无载频超宽带雷达的梳状谱干扰技术.pdf

31 1 Vol.31 No. 1 2009 1 Systems Engineering and Electronics Jan. 2009 : 1001506X(2009) 沈爱国, 姜秋喜 ( 电子工程学院, 安徽 合肥23003 ) : 针对传统干扰技术难以对超宽带雷达实现有效的干扰, 提出了梳状 干扰新技术该技术在雷达信 号带宽内将干扰信号集中在随机的某些频率点附近, 在不改变干扰信号总能量的前提下提高了超宽带雷达信号 带宽范围内部分区域的干扰信号强度,破坏雷达回波信号的相干性以无载频超宽带雷达为研究对象, 分析了该 干扰新技术的机理通过仿真实验, 将该方法与噪声干扰进行比较, 证明了该技术的有效性 : 超宽带雷达; 干扰技术; 仿真; 梳状 : T N 95 : A Jamming the carrierfree ul trawideband radar with comb spectrum signals SHEN Aiguo, JIANG Qiuxi (Electronic Engineering Inst., H ef ei230037, China) Abstract: To study a new method that can jam the ultrawideband ( UWB) radar, which bandwidth is very w ide, a new technique is introduced. The UWB radar is jammed by the comb spectrum signals in the new tech nique. Thejam power is concentrated at some random frequency points between the radar signal bandw idth. In this way the jam power at some range is enhanced with increase the total jam power. And the coherence of the radar signal is destroyed. The jam principle is analyzed using the carrierfree UWB radar as the study object. Compared with the noise jam method, the simulated results prove that the technique is effective. Keywords: ultrawideband radar; jamming technique; simulation; comb spectrum 0 , , , , 1990 3 Los Ala [ 4] , 1 , mos , A , BC [ 1- 2] 0. 25 , D , EF , G , 1(b) , A