Research On Waveform Synthesis Technology Of Multi-channel RF Noise Jamming Based On DJS

As an important part of electronic countermeasure technology, electronic jamming technology plays an increasingly important role in modern warfare. With the rapid development of radar technology and the constant improvement of the radar anti-jamming, the effect of the traditional radar jamming synthesis technology seriously reduces. Jamming produced by digital method, compared with analog method, is easier to be controlled, more precise, not sensitive to noise and easier to be implemented on hardware circuit. The DJS system could produce the best jamming signal that can jam the new system radar and multi-threat signal effectively.The digital jamming synthesis technology is used to generate the best blanketing jamming waveform- RF noise signal with the same bandwidth of the radar signal. Firstly, the paper introduces the basic principle of DJS and the generation methods of typical blanketing jamming, deception jamming and blanketing/deception complex jamming; second, according to the RF noise jamming signal characteristics, the paper studies required baseband signal, reading ways of the baseband signal and digital up converter technology to synthesize RF noise by simulation; thirdly, DJS technology is used to synthesize multiplex RF noise to a jamming signal that can jam multi-threat signals; fourth, on the basis of the analysis of the chirp pulse signal, some simulations are done to study the jamming effect of the LFM signals by traditional RF noise signals and RF noise signals based on the DJS technology; Finally, a clipping and filtering method was proposed to reduce PAPR of the synthesized noise signals.