线性调频脉冲压缩雷达干扰技术研究

Study of Jamming Technique of Linear Frequency Modulation Pulse Compression Radar

线性调频是雷达中应用最为广泛的一种脉冲调制形式,因此对抗线性调频脉冲压缩雷达是电子战领域的研究重点。由于线性调频信号存在脉内相干性,其时延和频移间存在强耦合性。针对这一特征,研究了线性调频信号的机理,提出了移频干扰对于线性调频脉冲压缩雷达实施有效干扰的可能性。通过理论推导分析,再通过Matlab仿真,仿真结果表明了移频干扰能够对线性调频脉冲压缩雷达实施有效干扰。

Linear frequency modulation（FM） is one of pulse modulation forms most widely used in radars, so the countermeasures against LFM pulse compression radar are the key point of research in the field of electronic warfare. Due to the in pulse cohenrence exists,LFM signals have strong coupling between time delay and frequency shift.Aiming at the feature,this paper studies the mech anism of LFM signals and proposes the effective jamming possibility of frequency shift jamming to LFM pulse compression radar.Through theoretical eduction and analysis, then through Matlab sire ulation,the simulation results show that the frequency shift jammimg can effectively jam the LFM pulse compression radar.