| It is well-known that radar is the important equipment in modern electronic countermeasures and information warfare.With the appearance of various information-based electronic equipment,the operational environment where radar locates is increasingly severe and complicated and the such situation puts forward higher requirements for the performance of detection and confrontation in radar systems.Meanwhile,as a good support platform for radar system design and evaluation,research and design of complex electronic system through computer modeling and simulation technology come into being,which can be preimplementation of complex radar system design scheme,avoid the actual equipment development cost is high,poor confidentiality and other problems.In addition,the test environment built from this technology is more flexible and efficient in solving the practical difficulties faced in the field experiment.Since most of the existing research on modeling and simulation of radar system are not detailed and comprehensive making it unable to reflect the combat capability of radar system,the credibility of this simulation results is inadequate.Considering the above limitations,this paper studies the modeling,simulation and evaluation of the radar system in complex electromagnetic environments based on modern high-tech phased array radar system,and forms a comprehensive research framework.The details are as follows:1.The operational missions and functional requirements of air-defensed phased array radar system are analyzed,and an implementation scheme of radar system modeling and simulation in signal level is designed,which mainly includes the analysis and design of the overall function,workflow and composition framework of the simulation model.In addition,a comprehensive efficiency evaluation index system is formed by analyzing the performance requirements of air defense early warning radar and guidance radar,and a comprehensive efficiency evaluation scheme of the radar system is formulated.2.According to the composition and function of the proposed simulation model of the radar system,the six components including the transmitter,antenna,receiver,signal processing model,data processing unit and resource scheduling module are designed in detail.The effectiveness of the crucial algorithms of each component model is verified by simulation experiments.This model can comprehensively adopt various anti-jamming measurements to construct the electromagnetic situation so as to eliminate all kinds of jamming on field of battle.3.Through constructing the radar echo signal model of target,jamming and clutter,the complex electromagnetic environment of the battlefield is simulated realistically.The principles of generation models of the three kinds of signals are analyzed and simulated.Then,simulation experiments are carried out for each model to verify the correctness of the signal generation model.4.Finally,the developed simulation system of radar electronic warfare is exploited to carry out the simulation experiment of radar typical air defense countermeasure.The actual airdefensed operation process is simulated through electromagnetic equipment simulation objects,realistic battlefield environments,and a comprehensive engagement situation display.The adaptability of the radar system under different conditions is evaluated,verifying the correctness and effectiveness of the overall modeling and simulation work in this paper.The work has important reference value for the practical engineering application of radar system modeling and simulation. |
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