Simulation and Analysis of False-Target Jamming Against Stepped-Frequency MMW Radar

Stepped-frequency signal is usually used to improve range resolution in missile-born MMW radar.The coherent stepped-frequency pulse series are transmitted by radar,and then the high resolution range profile of target can be got using inverse Fourier transform.It's invalid using traditional noise jamming against stepped-frequency radar,so coherent jamming must be used.Two kinds of coherent jamming technology are mainly researched: radar signal copy,retransmission jamming and smart noise jamming.The jamming mechanism is researched at first,and then jamming performance with different parameters is calculated.According to the jamming performance,an effective jamming method is proposed.At last,simulation results show the theoretical analysis is valid.