Research On The Interference Mode And Interference Effect Of The Ground Radio Fuze

Electronic jamming restricts radio fuze playing the role directly in the modern war.So the research of radio fuze jamming has became an important part of the electronic countermeasure field.This paper is based on continuous wave Doppler fuze,comparison of harmonic FM fuze and triangle wave FM fuze.The interference effect on deceptive and oppressive interference of the three typical fuzes is studied by theoretical analysis,modeling simulation and static interference test.First of all,the paper simulates the exterior rajectory of a 152 mm howitzer with the matlab and extracts the end rajectory data as the basis for the establishment of the fuse judgment conditions.In considering the premise of effective interference time,the model of deceptive and oppressive interference is established combined with the analysis of warhead damage effect and the location of the jammer.Then,the paper researchs the working principle of three typical fuzes and builds signal processing model.The output of fuze which is under the deceptive and the oppressive interference is discussed and the factors that affect the interference effect are analyzed according to the system signal processing.The theoretical analysis is also verified through the simulation experiment.For the continuous wave Doppler fuse,sinusoidal AM signal which add increased AM can constitute deceptive interference.For the comparison of harmonic FM fuze,sinusoidal AM swept interference and forwarding interference which add dynamic time-delay have obvious deceptive effect.For the triangle wave FM fuze,triangle wave FM signals which satisfy the parameter requirements can also deceive the system.For the three kinds fuzes,high-power noise interference signal that cover the receiver can suppress the useful signal effectively and make the fuze failed.Finally,the method of controlling variable is taken for a number of groups static deceptive and repressive interference test on the continuous wave Doppler fuse and the comparison of harmonic FM fuze in the microwave darkroom.The interference effect of each group tests was evaluated by taking fuze activation probability as an index.The interference theory that is analyzed in the previous section as well as the result of simulating are verified.