The Research On Active Jamming Method Strategy And Efficient Implementation Of Millimeter Wave Terminal Guidance Radar

In the field of precision guidance,millimeter-wave radars are often used as terminal guidance radar seekers to perform target detection,tracking and strike missions.The millimeter wave terminal guidance radar is a high-precision tracking measurement system,which poses a great threat to military weaponry.Therefore,it is of great significance to conduct jamming research on millimeter-wave terminal guided radar.Modern terminal guidance radars generally adopt new radar technologies such as pulse compression,pulse Doppler and coherent accumulation,and are a coherent system radar with high anti-jamming performance.In order to achieve effective jamming to the millimeter-wave terminal guidance radar,active jamming methods must be studied.The development and application of digital radio frequency storage technology enables the jammer to sample and store the received radar signal without distortion.After jamming modulation,an jamming signal with good coherence is generated.According to the "theoretical research-hardware implementation" idea,The main work of the thesis is as follows:1.The working principle of millimeter wave terminal guidance radar seeker is briefly described.The signal processing system of pulse Doppler terminal guidance radar is analyzed.The basic principles of pulse compression,pulse Doppler,moving target detection and single pulse angle measurement are studied.On this basis,from the perspectives of signal processing,system characteristics,working mode,etc.,the vulnerability of the millimeter-wave terminal guidance radar is analyzed.The corresponding active jamming method is studied and an effective jamming strategy is developed.2.Based on the jamming effect and engineering realization,the smart noise jamming,dense false target interference and distance-speed joint towing jamming in the active jamming pattern are selected.The jamming mechanisms of the three jamming patterns are studied respectively.Simulations are performed for verification and analysis.3.The efficient implementation structure of dense and false target jamming is studied.The structure is improved by the basic delay superposition structure,which not only solves the problem of low resource utilization of the infrastructure,but also makes the jamming pattern deceptive and suppressed at the same time.Sexual jamming effects.The efficient implementation structure of smart noise jamming is studied.The structure is derived based on the fast filtering algorithm.Compared with the direct parallel convolution structure,more than half of the resources are saved under the same interference effect.4.The design idea of the millimeter wave terminal guidance radar jamming system is briefly described,and the hardware block diagram of the broadband jamming system is given.Next,a modular function analysis was performed on the jamming subsystem.In the data processing module,the principle of the data rate conversion unit and the Hilbert transform unit and the FPGA implementation process are mainly given.For the jamming signal generation module,the FPGA implementation process of dense false target jamming,smart noise jamming and distance-speed joint towing jamming is given,and the jamming effect analysis is combined with the simulation results.