Design And Implementation Of Real Time Control System For The Direct Wave And Clutter Simulator Based On VxWorks

During the radar system development,in order to verify its anti-jamming performance,so the radar echo simulator arise spontaneously.The radar echo simulator can be used to simulate the target,clutter and any other noise.Therefore,it can provides a laboratory test environment for the development,test and maintenance for the radar system,and save the development funds,shorten the development cycle and improve the development efficiency,so it plays a key role in the development of radar system.This paper is based on the direct wave command and clutter simulator for the development of the foundation,mainly expounds the application of Vx Works embedded operating system in radar RF simulation,based on Windows and VxWorks,the system frame method of two kinds of software system to achieve a combination of simulator.The new system not only meets the need of good interface interaction,but also greatly improves the real-time performance of the system.In order to achieve this design,the specific research contents are as follows:Firstly,the overall architecture of the simulator is summarized.The simulator system is composed of microwave unit,baseband unit and display control unit.The microwave unit is composed of microwave up conversion and down conversion link.The baseband unit is based on FPGA digital signal processing board,this board is based on DRFM.Then it introduces the running environment of VxWorks,and introduces the running environment of the display and control program based on Qt.Secondly,on the basis of the analysis of the main program control flow of the system software,a reasonable VxWorks multi task scheduling scheme is designed.According to the debugging environment Workbench,the startup scheme of VxWorks is designed,and the file structure of BSP is analyzed.This paper analyzes the working process of the system,designs the program of the main control flow of VxWorks,and gives the design scheme of the system.Finally,the test results of the direct wave command and the ground clutter simulator are given.On the basis of development index and function,mainly divided into three parts,the direct wave signal,target echo and jamming signal by standard test equipment,test results show that the indexes of the simulator can meet the design requirements,VxWorks operating system can meet the real-time requirements.