Research On DRFM Jamming Technology To HPRF And CW Signal

Pulse Pulse Doppler (PD) radar is the coherent system which utilizes doppler effect to radar target information detection. It usually works at higher pulse repetition frequency, which has high duty cycle. Continuous wave radar utilizes the difference between transmission frequency and reception frequency to measure the target speed. Continuous wave radar signal has no start-stop concept, its duty cycle is 1. It is very necessary to research the jamming methods of HPRF PD radar and continuous wave radar.Noise jamming and deception jamming are the main DRFM jamming methods of HPRF PD radar and continuous wave radar. The thesis discusses the DRFM RF noise jamming, the DRFM noise phase-modulation jamming, the DRFM time-delayed jamming, and the DRFM frequency-shifting jamming in detail. Corresponding simulations are also given. The thesis plays emphasis on the DRFM multiple false target distance deception jamming. According to HPRF and continuous wave signal characteristics, the thesis proposes the circulating storage plus convolution filter method to generate multiple false targets, so as to achieve the purpose of deception jamming.