Design and Implementation on Correlation Interferometer Direction Finding Algorithm Based on FPGA
In order to adapt to increasingly complex electromagnetic countermeasures environment,and differ from traditional processors by using serial architecture and IQ data for direction finding algorithm,an optimized correlation interferometer direction finding algorithm architecture is proposed and designed on FPGA to quickly and stably calculate the phase difference.This paper gives the architecture and operation flow of FPGA direction finding system in detail,and adopts a stable and economical system architecture in practice.In order to meet the requirements of subsequent practical applications,the board level testing is completed on the Xilinx's xc7vx690tffg1927-2 carrier board with the logic control unit,the FPGA correlation interferometer direction finding recognition results verify the stability and efficiency.The verification results show that compared with the traditional FPGA correlation interferometer di-rection finding architecture,the LUT resource occupancy of the proposed architecture is reduced by 39.5％,the direction finding speed is increased by 17％,with a process signal bandwidth of 80 M Hz and jump speed of up to 1 200 hops/s.
correlation interferometer direction finding algorithmFPGAresource optimizationfast operationwide-band direc-tion finding
万方数据
维普
