Design and implementation of distance measurement system based on FMCW technology

Abstract

In this paper, the distance information is obtained according to the relationship between distance and beat frequency in FMCW ranging principle, the ranging process of sawtooth wave as frequency modulation signal is described in detail, and the causes of ranging error are analyzed briefly. The distance measurement system of simulation uses Matlab software to write, and the hardware ranging platform is built by DB77M24A6426V2 millimeter wave radar module. It is verified that the distance measurement system design in this paper achieves more accurate ranging in the short distance measurement, and provides a relatively simple ranging waveform, which provides a relatively powerful reference basis for the subsequent ranging system design and hardware selection.