Study On Active Radar Jamming Technology Based On DRFM

With the rapid development of electronic information science and technology,the radar anti-interference ability of the new system has greatly enhanced, in otherword,traditional interference measures can’t satisfy the future war mode needs thatindicate"integrated network and electronic warfare operational ".With the emergenceand high-speed development of DRFM technology,it can quickly store and copy theintercepted radar pulse signal waveform, to make the coherence interferencetechnology easily achieve.The jamming signal,which generated on the DRFMtechnology,is not only strong, but also have the follow advantages:easily passing radarmatched filtering system; obtaining the original pulse compression radar signal in thesame gain;high power utilization; including double features of oppressive jammingand deception jamming; having good interference effect. All these advantages caneffectively influence the new system radar interference. What’s more,it has theoreticalsignificance and practical value in the new military electronic countermeasurefield.This article revolves the DRFM active radar jamming technology researchmainly from the following aspects:1.Learn basic composition and working principle of digital radiofrequencymemory；combined with radar-jamming modulation technique；carry out a detailedresearch of the jamming technology, which is based on the DRFM technology.2.This paper analyzes the detection of radar active jamming and jammingtechnology, combined with radar jammer, researches the calculation of the radarjamming energy and the improvement way of transceiver, based on the modernelectronic technology, gives a kind of multi-functional jamming simulator modelingmodel, initially laid the theoretical foundation of radar jamming technology research.3.On the basis of the new technology of radar jamming, this paper not only hasmore clear ideas on the four advanced active interference pattern,which based on theDRFM modeling technique,namely the intermittent sampling forward interference,intermittent sampling cycle shift frequency jamming, smart jamming andfrequency-shifting jamming,but also learn and improve the principle of them. 4.On the basis of the original research, in view of the LFM signal and theperformance of the DRFM, with modern high utility ratio of LFM radar approach,thispaper proposed a new way of interference-frequency shift smart noise jamming. Theinterference pattern orthogonal convolution modulation, signal forms, flexibleparameter (controlled) variable, if the hardware to meet the requirements, and canautomatically choose the best style, the jamming signal generated in orthogonalmodulation, convolution, weighted form. Simulation parameters for the airintelligence radar as a benchmark, the matlab software simulation, amplitudecompensation after the jamming on LFM radar has great effects.With the leap development of electronic information technology, many newinterference technology has emerged. DRFM technology are widely introduced toradar jamming technology. Many new jamming technique is borned. Frequency shiftand smart jamming also gets very good development and application. Interferenceeffects will no longer be the only measurement goals, smaller power, simple andquick way of interference, effectively to the target and the radar and jamming will bethe major interference technology development trend in the future. More in-depthstudy will be based the DRFM of radar interference.