The authors have developed a digital beam forming dynamic imaging radar system, ”VirA.” It is a cutting-edge non-contact measurement technology for space-continuous vibration monitoring of buildings. In this research, the authors have presented the vibration monitoring method by conducting vibration measurements of an actual tall building. Experiments were performed to compare the performances of two time-synchronized radars and a conventional vibrometer. Frequency analysis was performed and the dominant frequencies were compared with those determined from the conventional vibrometer.
Hideaki Iwaki, Kazuo Tamura, Hitoshi Nohmi, Ikuo Shirai, and Akira Nohmi, "Vibration monitoring of a tall building applying DBF based imaging radar: VirA," Proc. SPIE 10598, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2018, 1059825 (Presented at SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring: March 08, 2018; Published: 27 March 2018); https://doi.org/10.1117/12.2296491.
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Study of self-shadowing effect as a simple means to realize nanostructured thin films and layers with special attentions to birefringent obliquely deposited thin films and photo-luminescent porous silicon