Research And Realization Of Reconnaissance And Launching System Of Digital Jammer

Increasingly complex electromagnetic environment,the changing international situation,accelerated the radar research process of new technology and new system.The study of a wider range of interference machine has become a top priority.With the rapid development of large-scale programmable logic devices,digital jammers by virtue of its unique flexibility and intelligent gradually become the main trend of the jammer.In this paper,based on the research and implementation of digital jammer detection and launch system,a system architecture based on channelization technology is proposed to realize the detection and transmission of non-cooperative signals.This paper mainly carried out the following aspects of research:1.The digital jamming system is divided into three sub-systems: interference reconnaissance,interference generation and interference emission.Based on the requirements of each subsystem,the corresponding sub-system architecture is designed,and a digital jamming system based on channelization technology is proposed.2.The key technology of reconnaissance system based on digital channelization technology is studied emphatically.Based on the basic principle of digital channelization,combined with the uniform signal spectrum division method,the efficient realization method of digital channelization is deduced.At the same time,the hardware implementation method of analysis filter bank is given.With the help of Matlab platform and ISE platform,the function simulation and hardware simulation are completed.Then,a new method of adaptive threshold detection is proposed for the cross-channel problem and the rabbit ear effect caused by channelization,and the detection algorithm flow is given for the narrowband and broadband signal cross-channel problems respectively.3.The key technology of the transmission system based on digital inverse channelization is studied.Briefly introduces the working mode of phased array radar,jamming strategy is given based on the research of the typical interference patterns of three different types,then the structure of efficient implementation of digital inverse channelization is deduced in detail.Combining with the simulation of function and hardware,the feasibility of the above key technology is verified,and the analysis and verification of the resource consumption are given.4.The digital jammer reconnaissance and launch system was systematically tested.This paper introduces the digital jammer from three aspects of hardware technology,software technology and display control interface.The system test is done for the subsystem.The test results and theoretical values are compared to verify the effectiveness of the overall architecture of digital jammer.