Design Of Universal Radar Data Acquisition And Recording System

In the modern warfare, researches and applications of many kinds of high-performance & new type radar are attached more extensive importance than ever. For the designing, testing, experimentation and accepting of radar system and the research of signal processing algorithms, RDARS (Radar Data Acquisition and Recording System) is required to sampling and recording radar data of real circumstance in outfields. As more and more multi-type and multi-operating mode radar's appearance, RDARS are required to have the ability of sampling and recording multi-type radar signal. So the requirement of universal RDARS is increasing.As continuous development of electronic measurement instruments, especially rapid development of Virtual Instruments software and hardware, now it's possible for designing and implementation of universal RDARS. Aiming at solving difficulties and key problems of universal RDARS, three aspects of problems including IF sampling conditions of coherent pulse radar, hardware and software designing of universal RDARS are deeply discussed in this paper, and the feasible solution are presented. Then, a universal RDARS is designed and implemented.In chapter one, the research background and the importance of research in universal RDARS are introduced. Difficulties in radar data acquisition and key problems in designing of RDARS are concluded. At last, the technology of Virtual Instruments is introduced.In chapter two, aiming at the problem of coherent pulse radar IF sampling, the coherent pulse sampling condition is put forward and is proved in its direct influence on designing of universal RDARS. By both theoretic and practical analysis, the compensation method and the solution way which based on TDC (time-to-digital converter) are presented.Universal RDARS hardware designing methods are researched in chapter three. The advantage of forming RDARS hardware platform by Commerical-Off-The-Shelf (COTS) products is firstly introduced. Then the correlative technologies of modularized hardware are explained. Aiming at solving difficulties and key problems of RADARS, the principals of choosing modularized hardware are presented. At last, the platform of the system hardware we designed is introduced.Universal RDARS software designing methods are researched in chapter four. Firstly, basic structure of the system software is introduced, software develop environments are presented and the reasons of choosing LabVIEW as system software develop environment is explained. The common key problems in software designing of RDARS are concluded and the corresponding software designing methods are presented. At last, functions and theories of the system software are introduced.In chapter five, firstly the performance of the system is tested. The testing contents, testing methods and testing results are presented and analyze on testing results are made. Then, the radar data acquired in outfields is processed, the experiments conditions are explained and the processing results are presented.