Research On Data Processing Technology And Software Design Of Ground Phased Array Radar

Radar data processing technology is an important part of the radar system.In the operation process of the ground radar system,the surface environment is very complicated,and there are many clutter factors around the target,including buildings,roads,etc.These disturbances will cause the radar to have false alarms,missed alarms and measurement errors in the target detection,so it is necessary to design a reliable data processing method to achieve accurate output of radar target information from clutter and noise.Phased array radar breaks the limitation of traditional radar,and has the characteristics of flexible beam scanning,inter-distribution and time-allocation control,which is more suitable for complex working environments.Based on the advantages of multi-function and self-adaptation of phased array radar,this paper designs the data processing system of ground phased array radar for clutter problem.The data processing system is mainly divided into five modules: point condensing,track start,track maintenance,track termination and clutter map.Firsly,the target information transmitted by signal processing is processed in the Matlab environment,and to complete the target tracking and track management by measure the target tracking,azimuth angle,pitch angle,radial Doppler speed and other information.Among them,the purpose of the dot condensing process is to discriminate and delete a large number of traces after the signal processing,leaving the effective traces.The track start is based on the principle of multi-hypothesis tracking(the improved m/n logic of the Singer model with acceleration),which realizes the temporary track to reliable track conversion in the clutter environment.The track maintaining is based on the wave gate with radial Doppler measurement to extrapolate the track and update the track information.The end of the track is to delete the track when the track meets the extinction condition,or it is not the target that the radar needs to continue tracking.Based on the Matlab simulation processing,using DLL dynamic link library to modularize the functions of each part to achieve the target motion trajectory generation based on the Microsoft Visual Studio 2010 platform.At the end of this paper,the real target motion trajectory information obtained by Matlab and Microsoft Visual Studio 2010 data processing is compared,and the effectiveness of all designed ground phased array radar data processing software systems is verified.