ABSTRACT
Vibration measurement based on microwave sensing is a new non-contact vibration measurement technology developed on the basis of microwave radar micro motion sensing. Compared with the existing technology, its advantages include high sensitivity, multi scale, large detection range, strong environmental adaptability, low power consumption and miniaturization. In this paper, taking the Beijing-Baotou Railway Overpass as an example, the monitoring system based on microwave vibration measurement technology is used to extract the vibration monitoring data within six hours, and the data are analyzed in time and frequency domains. The signal characteristic indexes and the first two natural frequencies of the main bridge structure of the Beijing-Baotou Railway Overpass are calculated.
