Advanced High Precision Radar Gauge for Industrial Applications

摘要

This paper presents a highly accurate and reliable radar gauging system for continuous level measurement in industrial bulk storage tanks. The radar system has a compact size and is explosion proof. It consists of a stepped frequency continuous wave (SFCW) transmitter and receiver with monostatic gastight antenna. The frequency range is from 9.5 to 10.5 GHz. With advanced signal processing software algorithms implemented in the microprocessor, the accuracy of ± 0.3 mm over whole measuring range has been obtained. Even if under severe multi-path effect from tank wall and mismatched high-mode interference in standpipes, an accuracy of +1 mm can still be attained.