Research On Key Technologies Of Radar Jamming Simulator Base On Uav Airborne

The electromagnetic environment of the modern battlefield is increasingly complex.While the new system radar is developing,the jamming technology for radar is also developing.The two have always been a relationship of mutual promotion and trade-off.In order to test the anti-jamming performance of radar equipment,a radar jamming simulator is needed to simulate the jamming signal emitted by the jammer.The traditional single-channel digital radio frequency storage(DRFM)and quadrature dual-channel structure radar jamming simulator have limited processing bandwidth,and the channelized radar simulator using analog devices is not easy to modify.Digitally channelized radar jamming simulators have the advantages of easy modification and large simulation bandwidth,and can be miniaturized to meet the weight constraints of UAV payloads.The main research contents of this thesis are as follows:1.Research on efficient implementation techniques of digital channelized reception and digital inverse channelized transmission.In this thesis,the transmission structure from quadrature modulation after A/D sampling,decimation to generate complex modulation signal to digital channelization before D/A and inverse digital channelization to interpolation and quadrature demodulation is given.The high-efficiency realization technology of digital filter bank of phase filtering and DFT is deduced in detail,and the simulation platform is used to simulate the received channel signal and the inversechannelized reconstructed signal.2.The channel detection algorithm is studied.In this thesis,a channel decision algorithm combining the adaptive autocorrelation threshold update detection algorithm and the first-order differential instantaneous frequency measurement algorithm is proposed,and the channel decision process is given by combining the two algorithms.Finally,the simulation platform is used to simulate the cross-channel signal processed by the algorithm.3.The channelization generation of radar jamming signal is studied.This thesis uses the simulation platform to simulate a variety of suppression,deception and smart jamming,and gives the channelized generation structure.waveform.The smart noise interference processed by the adaptive sidelobe cancellation system is simulated,and the effectiveness of various signals is demonstrated.Based on the above research,the overall design of the implementation of the UAV airborne radar jamming simulator is carried out,and the vivado platform is used to implement it in units and modules,and the correctness and effectiveness of the implementation content are demonstrated through simulation.