The Realization Of The Sar Radar High-speed Data Acquisition And Processing System

As the bridge of analog system to digital system,the data acquisition and signal processing has a rapidly development with the development of digitization and computer technology.In recent years, the new technology and the new approach about the data acquisition and signal processing solicitate its'innovation and progress, real secure(remote monitoring) and technique of simulation(include transducer,data acquisition,micro chip pl data,programmable logic controller,profibus processing,flowcontrol,curve and animate displays,automatic fault diagnosis and reports output.etc) lift data acquisition and signal processing to a new level.With the data acquisition technology, the high speed DAS based on the new technologies in computer area and new products is widely used in radar data processing,industrial control,instrument test and processing,speech recognizing technology and image processing. Also, as other computer's technology, development with high speed and high precision of AD/DA's technology, the high speed DAS isgetting higher and higher. it made it to intelligence,virtuemart and mass data processing that with the further development of the technology of the internetofthings, especially.From the view point of engineering application, a solution of the high speed DAS design based on the PCI interface, FPGA and can be expansed. For the zero IF input with 200MHz's bandwidth , the sampling rate is 220MHz,So it can be commonly used in radar's data acquisition and data processing. In actually, The sampling rate used in the instrument is 220MBps(in 32bit windows )the image obtained by DBS algorithm is presented and the instrument has been succssefully used in a certain project.