Research on Key Technologies of High Precision Millimeter Wave Radar Ranging System

High precision measurement technology has a wide range of applications in industrial engineering, such as solid and liquid level measurement, detection of small defects on highly smooth metal surfaces, etc. But, accuracy of traditional measurement technology is difficult to reach the millimeter level. Based on the introduction of basic principle of FMCW radar, this paper analyzes the key technologies of high-precision radar ranging system. Related works are studied, which focuses on millimeter wave antenna, integrated circuit, and digital signal processing algorithm. At last, the future directions and outlook are prospected.