Research On Target Detection And Simulation Of Distributed Network Radar

In the modern electronic warfare,with the appearance of stealth aircraft and other new aircraft and the development of integrated electronic interference technology,the survival conditions of single-base radar are seriously challenged.If the Radar-Cross Section(RCS)of the targets are flickered violently,a radar with single angle may not be able to detect the target.The network of radar can make full use of the advantages of the resources and information fusion of single radar,which can greatly improve the comprehensive performance in terms of the detection,location,tracking,identification,anti-interference and anti-stealth of the radar system.In this paper,I research the target detection technology of distributed networked radar.The main research contents are as follows:1.The paper discusses the basic principle of distributed networked radar and its various data fusion methods.Then,introduces a non-coherent fusion detector for the signal level fusion method.Finally,this paper introduces a two-threshold detector based on the above detector.2.The paper summarizes the signal processing method of radar system for multi-extended target detection under distributed networking platform.On the basis of two-threshold detection,the principle of each signal processing method in each level detection is introduced and the simulation result of single detection is given in this paper.Finally,the detection performance of the detection system is verified by Monte-Carlo simulation,and the detection performance of different parameters are compared in this paper.3.The paper analyzes the time-frequency synchronization problem in the distributed networked radar system,introduces the causes of time synchronization error and frequency synchronization error,and analyzes their error.After that,the causes of channel error and quantization error are briefly introduced,and their error models are established.Finally,based on the detection system of Chapter 3,the above four errors are introduced respectively,and their influence on the detection performance is analyzed quantitatively.4.The paper researches the algorithm of deception interference suppression for the distributed networked radar,which is based on the correlation of scattering coefficients.Firstly,the signal and interference models are given.Then the correlation between the two models is analyzed,and then the algorithm is designed for the system of the distributed networked radar.Finally,the correctness and good anti-interference performance of the algorithm is verified by the Monte-Carlo simulation.