延时叠加对线性调频体制雷达的干扰设计与仿真

The Design and Emluator to the LFM Rader by Using Time-delaying Superposition Jamming

笔者研究了延时叠加干扰方式对新体制雷达中线性调频雷达的干扰效果。首先根据目前雷达技术发展的趋势,提出了对延时叠加干扰方式的研究需求,然后描述了线性调频信号的数学特征,根据其数学特征简单说明了其提高分辨率和抗干扰性的原理;接着介绍了各类数字射频存储的特点,利用Matlab软件对基于时分模式的延时叠加干扰和移频延时叠加的干扰方式进行了详细的仿真实验,并对干扰的结果进行了分析和说明,从而证明了干扰的有效性;最后针对这些延时叠加的干扰方法,提出了灵活配置的手段,具有一定的工程指导意义。

The jamming effect of time delay superimposed jamming on LFM radar in new system radar is studied.Firstly,according to the development trend of radar technology,the research requirement of time-delay superposition jamming mode is put forward,then the mathematical characteristics of LFM signal are described,and the principle of improving resolution and antijamming ability is simply explained according to its mathematical characteristics.The software has carried on the detailed simulation experiment to the delay superposition jamming and the frequency shift delay superposition jamming mode based on the time division mode,and has carried on the analysis and the explanation to the jamming result,thus has proved the jamming validity;Finally,according to these delay superposition jamming methods,proposed the flexible disposition means,has certain degree.The significance of engineering guidance.