Real-time wide-field spectral-scanning FMCW coherent 3D imaging and velocimetry
Posted on 05.08.2022 - 21:42
We present a novel real-time spectral-scanning frequency-modulated continuous-wave (FMCW) 3D imaging and velocimetry system that can produce 3D depth maps at 33 Hz, with 48° X 68° field of view (FOV) and 32.8 cm depth range. Each depth map consists of 507 X 500 pixels, with 0.095° X 0.14° angular resolution and 2.82 mm depth resolution. The system employs a grating for beam steering and a telescope for angular field of view (FOV) magnification. Quantitative depth, reflectivity and velocity measurements of a static 3D printed depth variation target and a moving robotic arm are demonstrated.
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Zhang, Jingkai; Qian, Ruobing; Zhou, Kevin; Viehland, Christian; Draelos, Mark; Dhalla, Al-Hafeez; et al. (2022): Real-time wide-field spectral-scanning FMCW coherent 3D imaging and velocimetry. Optica Publishing Group. Collection. https://doi.org/10.6084/m9.figshare.c.5993539.v1
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