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We demonstrate a handheld millimeter-wave radar head connected with remote signal synthesizer via an optical fiber, for the realization of a small and handheld nondestructive imaging system. An inertial measurement unit (IMU) mounted on the radar head identifies the direction and orientation of the head to provide three- dimensional point clouds for inspection of building structures. A small lidar system with the IMU is also discussed for construction of 3D point clouds for inner structure mapping in the buildings.
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Atsushi Kanno, Reina Takaoka, Shintaro Otani, Hideyuki Sotobayashi, Naokatsu Yamamoto, "Handheld millimeter-wave radar and lidar systems using an IMU device," Proc. SPIE 10994, Passive and Active Millimeter-Wave Imaging XXII, 1099407 (13 May 2019); https://doi.org/10.1117/12.2518679