Researching And Implementation Of Digital Phased Array Radar Multi-Target Simulation And Jamming System

Digital phased array radar multi-target simulation and interference system is to test and verify a airborne digital phased array radar system and its sub-system software and hardware functions.The system integrates multi-target simulation,multi-mode radar active interference signal generation,clutter simulation and other functions as whole.This system is mainly used for digital phased array radar in a complex electromagnetic environment to detect targets,as well as electronic warfare environment of the radar system and its sub-system performance evaluation.This system can produce radar echo signals with different batches,different repetition rates,different speeds,different distances,different pulse widths and intermediate frequencies.It contains different types of radar jamming signals that can meet the simulation of different operating modes of radar and digital signal requirements.so as to radar development,commissioning,production and maintenance and other aspects of the provision of advanced testing and functional verification means.The thesis mainly studies the following aspects:1.The simulation principle and realization method of multi-target simulation and clutter of digital phased array radar are studied.The model of radar target echo signal is deduced,And gives the principle and realization method of RCS,distance,velocity,track simulation of point radar.The clutter model and power spectrum of phased array radar are analyzed,and two methods of radar clutter simulation are given.2.Analysis of radar active jamming mathematical model and mechanism.This paper studies the characteristics and working modes of digital phased array radar,and generates the interference type method for each working mode of digital phased array radar according to the active interference pattern.The radar active interference,such as radar suppression interference,deception jamming and combined interference,are introduced from the principle level,and the related interference is simulated by matlab.3.This paper introduces the key technology of digital phased array radar multi-target simulation and jamming system and Focus on the DRFM interference implementation technology,multi-channel digital echo generation technology,multi-mode active interference signal generation technology and multi-target simulation technology.4.Design and implementation of radar multi-target simulation and interference system,the main sub-system to achieve the study,and the entire system to test the main functions.This paper introduces the hardware and software framework of the whole system,introduces the function of each sub-system,and introduces the framework of multi-objective simulation system and radar active jamming system engineering And the key technology used in the sub-system.