Design Of Acquisition And Processing System Of Radar Azimuth Signal Based On FPGA

The rapid development of radar technology demands higher requirements radar data acquisition system.The data acquisition system has high data acquisition rate and high data throughput.PCI bus,as a kind of engineering data bus,has the advantages of large data throughput,anti-interference ability and strong compatibility,which is widely used in the measurement and control system.This topic based on the chengdu some war industry research institute,according to the demand of radar signal acquisition,in view of industrial application,the PCI bus and radar signal acquisition system of photoelectric encoder scheme,solve the problem of high speed and high precision radar data processing,and develops the corresponding hardware circuit.In view of the acquisition demand of dual channel radar signal,FPGA parallelacquisitionarchitectureisdesigned and the parallel control program is written.According to the modular design idea,adopt.The digital subfrequency conversion(DDC)filtering algorithm has completed the research and realization of radar signal processing algorithm,thus improving the efficiency of radar signal processing.PLX SDK toolkit,based on PCI bus is developed in the underlying drivers,to design and write the I/O mode and the DMA mode of combining the data exchange program,complete the data acquisition of radar signal,transmission,such as pretreatment of functional design.