Research On Multi-Resolution Modeling And Simulation Of Radar Signal Processing System

As Radar system simulation plays an increasingly important role in radar analysis,design and development radar multi-resolution modeling method,which is represented by functional simulation and signal simulation,got more and more research attention.It can provide different resolution models for different simulation requirements under the premise of improving the simulation efficiency.However,the consistency measure and consistency maintenance of different resolution radar models are lacking in current research.In this thesis,the characteristics of the radar signal processing system are analyzed,and the multiresolution model is established.Quantitative analysis of the consistency of different resolution models is carried out from the aspects of behavior and structure.The consistency of the information that affects the consistency of the multiresolution model is determined,which provides the basis for the consistency maintenance of different resolution interactions.Finally,the system conformance verification and modeling are carried out based on the Matlab GUI.The main work of this paper is summarized as follows:Firstly,the definition model of the functional simulation and signal simulation of the radar system is defined according to the multi-resolution modeling concept.The consistency measurement method is given from the three levels of structure,I/O and analysis,and the radar multiresolution System consistency analysis object.The consistency of the two resolution models is analyzed.The consistency of the structure of the moving target is 0.9653,and the consistency of the signal simulation I/O is about 0.8;Analysis consistency in the output signal to noise ratio is low,the degree of consistency is poor.The traditional function simulation and signal simulation of the consistency is not high.Secondly,the key factors that affect the consistency of the system are analyzed,and the method of improving the consistency of the system is proposed.The functional simulation model is obtained by signal simulation aggregation.The consistency of the two resolution models is analyzed from the three levels of structural consistency,I/O consistency and analysis consistency.The consistency of the modified functional simulation and signal simulation is greatly improved.The consistency of the structure is 1/O consistency of 0.99 or more,analytical consistency in the output signal to noise ratio is high and low consistency is very high.The consistency of the modified functional simulation and signal simulation is higher than that of traditional functions.Then,based on the signal simulation model,from the I/O consistency,the input information of each module in the signal processing process is analyzed,and the input information of different resolution is obtained,so as to maintain the consistency of the system.The realization process of the convergence and depolymerization of the two resolution models of functional simulation and signal simulation is given,and the simulation of the consistency maintenance under the multi-resolution system interaction is carried out with the moving target display as an example.Finally,the multi-resolution radar signal processing simulation platform is implemented by Matlab GUI,and the parameter setting,simulation resolution selection and simulation result display are realized by human-computer interaction interface.And the consistency of the analysis of the system is analyzed by the output of the two resolution systems.The consistency of the analysis is 0.9616.