Research On Modeling And Simulation Method Of Airborne Radar Target And Environment

As a standard sensor for various aircraft platforms,airborne radar plays an important role in early warning detection,It is the core capability of airborne radar to detect and track targets under the condition of strong ground sea clutter by using pulse Doppler mechanism.The research on the characteristics of environmental clutter and target echo of airborne radar is an important technical way to improve the clutter suppression technology and improve the performance of airborne radar.Aiming at the technical requirements of airborne radar target detection under strong clutter,this paper studies the modeling and simulation technology of airborne radar target echo and environmental clutter based on statistical model and accurate model.Combined with the flight motion information of target and aircraft,the target echo simulation and airborne radar clutter simulation are carried out.Finally,the airborne radar echo simulation in target tracking state is completed Through the related signal processing and target parameter measurement of radar echo,the correctness of the airborne radar environment simulation theory and method studied in this paper is verified.According to the different simulation requirements of airborne radar,such as target search and tracking,target classification and recognition,this paper studies the target echo signal simulation technology based on statistics and accurate model,studies and establishes the statistical modeling and simulation process and method of target echo signal statistical modeling based on Swerling fluctuation model and the target echo accurate modeling and simulation based on target electromagnetic scattering characteristic library Process and method,and completed the typical target airborne radar echo modeling and simulation.In order to solve the problem of clutter suppression technology in airborne radar,the statistical modeling of environmental clutter and the accurate modeling technology based on grid coherence are studied.The simulation process and method of environmental clutter modeling based on Rayleigh(lognormal,Weibull,etc.)statistical model and the video coherent clutter simulation process and method of precise model are studied,and a typical airborne radar is completed Environment clutter modeling and Simulation in detection scene.Based on the research of target echo and environment clutter modeling and simulation technology,airborne radar echo vector superposition is carried out,and the airborne radar echo signal simulation in typical scenarios is completed,and the echo model is verified by using typical airborne radar signal processing process.The research work of this paper can provide technical support for airborne radar signal processing,clutter suppression technology research,and further equipment effectiveness test and evaluation.