On Characterization of Vibration Measurement Using Microwave Doppler Radar

Doppler radar is a compact, microwave sensor for detecting vibration of the target object, from a distance. In this paper, Doppler only measurements are used to characterize the vibrational properties namely vibration amplitude and the frequency. The focus of the study is to understand the potential effect of the measurement environment on measurement quality. The investigations lead us to propose a system consisting of two single channel radars (in lieu of one quadrature radar), spatially separated both along range and azimuth directions. The proposed system introduces diversity, ensures robustness in detection while keeping the system design cost-effective in large scale deployments.