Research on LFMCW Radar Velocity Ranging Optimization System Based on FPGA

Linear frequency modulation continuous wave (LFMCW) radar is widely used in the field of velocity measurement and ranging because of its high precision and good range resolution. The traditional LFMCW radar uses a single core FFT to do data processing, which is not very fast. This article utilize that advantages of fast and high degree of integration of FPGA, and propose a double-core FFT processor based on the use of the optimized CORDIC parallel algorithm to improve data processing speed, enhance real time, design and realize the calculation module of the double-core FFT data processing module and the distance measuring speed, and finishes the design of the LFMCW radar speed measuring and measuring system with real time and quick advantages. The experimental results show that the system has the characteristics of fast data processing and high reliability, and can measure the moving vehicle in real time and effectively. (C) 2020 The Authors. Published by Elsevier B.V.