Research On The Influence Of Distributed Uavs On Radar Detection And Cooperative Jamming Method

Aiming at electromagnetic countermeasure,this thesis studies the influence mechanism of distributed jamming on air-defense radar based on Unmanned Aerial Vehicle(UAV)group,and proposes a method to shield the penetration of the target based on UAV route planning,a method to shield the penetration of the target based on UAV cooperative range false target interference and a method of track deception jamming on netted radar based on cooperative UAV group.The first chapter outlines the background and significance of the research,introduces the research status of traditional radar countermeasure technology,the new trend of radar countermeasure development and the development status of military UAV technology,then gives the overall framework of this thesis.Chapter two research the influence of UAV on radar detection and the method of cooperative shield penetration.The influence of UAV on the range and angle measurement of radar is researched.Then a shield penetration method based on UAV route planning is proposed,and cooperation between UAV group and the penetration target affects the performance of radar to detect and track the target,the purpose of shield penetration is achieved,and the simulation verifies the effectiveness and feasibility of this method.The third chapter studies the distributed jamming effect of UAV loaded with the distance false target deception jammer on radar.Then proposes a shield penetration method of UAVs based on range false target deception jamming.Firstly,the influence of distributed blanking jamming on radar detection range is studied.Then,the effects of distributed deception jamming on radar are studied,three typical deception patterns(direct delay forwarding jamming,the interrupted-sampling and repeater jamming,frequency-shifting jamming)are involved,then verified by simulations.Then,a method to shield the penetration of the target is proposed.The method requires UAV group loaded with a jammer to conduct several range false targets.The range false targets and the penetration target are in the same beam and the same distance ring,which resulting in multi-sources angle deception effect.Then the detection performance is reduced and the purpose of shield penetration is achieved.In chapter 4,the principle of information fusion,homology test and anti-jamming capability of the netted radar are studied.Then proposes a method of phantom track deception jamming on the netted radar based on UAV group cooperation.This method requires the cooperation of UAV group movement state,enables the phantom track to pass the homology test during the information fusion process of the netted radar,so as to generate effective phantom track deception jamming on the netted radar.Simulation verifies the feasibility and effectiveness of this interference method.Finally,this paper summarizes the main work of this thesis,and give some suggested improvement and further research of this thesis.