Research On Synergistic Anti-jamming Technology Of Bistatic Radar

With the increasingly complex environment of modern electronic battlefield,monostatic radar can not meet the needs of the battlefield.At the same time,bistatic radar with potential "four anti" capability has been developed again.Based on a semi-active / active composite radar development project,this thesis studies the cooperative anti-jamming algorithm of the ground air bistatic radar system,adopts the method of joint data association hypothesis test to elimina te the range false target jamming,and completes the software design and implementation of the multi-core DSP of the air radar signal processor.Firstly,the bistatic data joint anti-jamming algorithm is designed for the ground air bistatic radar system in this thesis.According to the spatial coordinate relationship of the system,the LFM pulse signal echo model of the ground radar and the air radar is derived,and the relevant information of the target in the two radars is obtained by signal processing.The target information detected by the two radars is compared by chi square test The simulation results verify the effectiveness of the anti-jamming algorithm.Secondly,the software design and implementation of the air radar signal processor DSP under LFM pulse signal are completed.The command communication is realized by using EMIF,SRIO,SGMII and Hyper Link interfaces.The SRIO interface is used to receive the direct wave and echo data.The signal processing of the direct wave and echo data is carried out in the way of multi-core cooperative work,and the target correlation distance and angle are detected.Finally,the echo simulator is used to build the test system to verify that the radar signal processor has the function of measuring the target correlation range and tracking the target angle under LFM pulse waveform.