Research On Radar Data Processing Technology Based On X86 Platform

With the innovation and progress of the hardware processing technology of the central processor,the ability of parallel processing of computers has been continuously improved,which has promoted the development of radar system in the direction of high precision and large data volume.Relying on the powerful computing power of the computer,Radar terminal system based on X86 platform has gradually integrated radar signal processing and data processing.And the application based on the X86 platform also has the advantages of good portability and convenient maintenance.This paper mainly designs a terminal display system combined with radar signal processing and data processing.By analyzing the system structure,the above work is subdivided into three parts: radar signal processing subsystem,radar data processing subsystem and radar terminal display system.Based on the measured data,the time consuming of the subsystem of the radar signal processing subsystem is analyzed,and the X86 architecture server and data acquisition card satisfying the real-time requirements of the system are configured.The related work of system design is as follows:(1)In the radar signal processing module,the steps of each algorithm in the module are analyzed in detail.By means of memory copy,the algorithm of data matrix migration on X86 platform server is optimized,such as pulse compression,moving target display(MTI)and moving target detection(MTD).At the same time,according to the sliding window structure of the constant false alarm algorithm,the cyclic variables are reused to optimize the computation amount.And through the FFTW(fast Fourier transform Toolkit)to improve the operation efficiency of fast Fourier transform.Finally,the OpenMP(Open MultiProcessing)parallelization method is applied to the whole radar signal processing module,which greatly improves the efficiency of the algorithm and reduces the running time of the whole subsystem nearly 10 times.In this paper,the above technology is applied to achieve the real-time requirement of the whole process.(2)Aiming at the condensation problem of target detection points,this paper proposes a point clustering method based on density clustering(DBSCAN).By changing the relevant parameters of DBSCAN algorithm and a small part of algorithm flow,the method can adapt to radar environment quickly and efficiently.Especially for complex shapes or large targets.(3)In the radar data processing module,this paper first analyzes the motion model of the target,then compares and analyzes several classical algorithms of the two main technologies of target tracking filtering and data association,and applies it to the actual scene.Finally,the track management algorithm is implemented by scoring criteria to track the track initiation,maintenance and extinction.The whole module ensures the effective and stable display of tracks.(4)In the design of radar terminal display interface,this paper designs a simple list of radar display interface,control system and target information,and finally completes the whole system software design through joint debugging.Under the measured data,the whole system can track the effective targets in real time and display the tracks reliably.The validity and research value of the system are verified.