基于连续存储的DRFM干扰Simulink建模与仿真

Simulink Modelling and Simulation for Jamming Using DRFM Based on Continuous Memory

研究了复杂电磁环境下基于数字射频存储(DRFM)的对多辐射源干扰问题。分析了基于脉冲存储电路结构的DRFM在多辐射源脉冲交织情况下干扰时段分配不足问题,提出了采用收发同时、连续存储DRFM电路结构。基于该电路结构,分析了FIR、IIR结构假目标形成电路的优缺点,设计了一种延迟混叠的假目标形成电路。该电路能在有限的硬件资源条件下产生多个假目标,从而形成对雷达的密集假目标压制/欺骗干扰。建立了连续存储DRFM电路的Simulink模型,并以常规脉冲、相位编码和线性调频雷达为干扰对象进行了干扰仿真实验,结果显示,基于连续存储、延迟混叠的DRFM电路结构能有效实现对多辐射源的同时干扰。

Jamming on multiple emitters using digital radio frequency memory （DRFM） in complicated electromagnetic environment was studied. The circuit structure of DRFM based on pulse memory has the deficiency of jamming time when pulse signals interleaved. A new circuit structure of DRFM based on continuous memory was proposed. The jammer transmitted and received simultaneously when using the continuous memory DRFM. In order to create multiple false radar targets with limited hardware resource, the delay and aliasing circuit according to FIR and IlR was designed. Then the general technique of simulink modeling and simulation for continuous DRFM was proposed. The experiments using pulse radar, phase-coding modulated radar and linear frequency modulated radar as the emitters to be jammed were carried out. The result of simulation demonstrates the correctness of the analysis.