Research On Anti-jamming Simulation System Of Active/semi-active Composite Radar Seeker

At present,air defense systems are faced with an increasingly complex operational environment,and there is an urgent need for composite guidance technology and efficient data fusion technology.Aiming at this background demand,this dissertation focuses on the anti-jamming simulation system based on active/semi-active composite radar seeker in ground-based air defense missile system.The main work of this dissertation is as follows:1.Aiming at the shortcomings of the current seeker simulation system,an active/semi-active composite radar seeker anti-jamming simulation system based on RTX is designed and built.The system is composed of a reflective memory network and a hardware platform composed of multiple PCs.The interactive transmission and the synchronization and real-time performance between the systems are guaranteed by the RTX real-time operating system.2.The active seeker,semi-active seeker working mode,echo signal modeling,seeker signal processing flow are studied in detail,and the clutter model and angular scattering model are analyzed,and the DRFM interference and Towed interference has been studied in depth.3.Radar information fusion target tracking and filtering algorithm,including Kalman filter(KF),extended Kalman filter(EKF),insensitive Kalman filter(UKF),particle filter(PF)and other algorithms for simulation analysis and performance comparison.4.The active/semi-active composite guidance information fusion is deeply studied,and the working mode and information fusion mode suitable for the simulation system are proposed.For the DRFM interference and the towed interference,the suppression measures and strategies are proposed respectively.The suppression method is simulated to verify the feasibility of the proposed strategy,and the effect of the active/semi-active composite seeker on anti-DRFM interference and anti-trail interference is realized.