Data Processing Method based on FPGA Input Block Remapping in Radar Countermeasures
In radar countermeasures,the jammer detects the radar signal,then the signal is sampled by AD and input to FPGA for processing and generating interference signal.When using the FFT IP core officially provided by the FPGA platform Xilinx to perform FFT processing on the data output by the high-speed ADC,data preprocessing of"parallel-serial"is required,which greatly slows down the FFT processing speed.At the same time,the internal resources of FPGA is not maximized.An data processing method based on FPGA input block remapping is proposed.This method uses the data input remapping module to optimize the input data into a parallel block data stream format.Then the FFT butterfly networks process the input data into blocks to obtain the discrete Fourier transform data.Finally,parallel data are output.Experimental results show that this method can effectively save FPGA computing time,improve radar data processing speed,optimize the utilization of FPGA internal resources,and has the characteristics of good real-time performance and high flexibility.
NETL
NSTL
万方数据
