Modeling And Simulation Of Air-borne-radar Clutter And Jamming

Ground-sea clutter has a serious impact on the performance of the radar,especially for airborne radar,ground-sea clutter has the strength,wide spectrum characteristics,so that it can have an impact in any distance on the echo of the target,so airborne Radar clutter simulation is very necessary,and in today's information war,the contest is the warring parties confrontation and countermeasure,with the rapid development of electronic technology,radar active interference has become a very favorable countermeasure,and has been widely used in the information war,and chaff interference as a simple and cheap and effective means of passive interference is still widely used,therefore,the joint simulation of airborne radar clutter and common interference is not only important for radar performance testing,but also for the development of interference and anti-jamming technology in contemporary information warfare.Based on the background of the actual project,this thesis studies the modeling method of the airborne radar clutter and interference.Including the backscattering coefficient and the statistical distribution model of clutter in ground-sea clutter simulation,And the clutter reflection modulation function model is designed and designed,and the simulation and simulation of chaff interference,deception jamming and suppression interference are carried out respectively.The contents of this thesis are as follows:Firstly,in the clutter simulation,the spatial geometric model is introduced,and then the clutter model based on statistical characteristics is analyzed,including the division of the ground-sea clutter unit,the calculation of the cross-sectional area based on the Morchin model,the statistical simulation of the clutter Process analysis and implementation,and then the scope of application of statistical characteristics is summarized.Then,in the chaff interference,the time domain characteristics,spectral characteristics,translational and rotational Doppler caused by the fully diffused chaff cloud are analyzed,and the simulation method and simulation results are given according to the two interference strategies of centroid type and center of mass jamming;In the deception jamming,three kinds of spoofing modes of distance traction,speed traction and distance speed traction are introduced.In the barrage jamming three kinds of barrage jamminggeneration methods,such as RF noise jamming,AM noise jamming,FM noise jamming,are introduced.Simulation of the barrage noise jamming are carried out by using the FM noise jamming method after analyzing and comparing these three production methods.Finally,this thesis presents the simulation method and simulation results of clutter and jamming simulation.