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Experimental Results of ISAR Imaging Using 216 GHz FMCW Radar

The lower Terahertz radar has the advantage of high resolution in both range and cross-range directions, but also brings difficulties in processing, such as compensation of phase error for wideband chirp, accurate motion compensation and high-resolution imaging algorithms. In this paper, we present imaging results of an experimental frequency-modulated continuous-wave (FMCW) radar at 216 GHz. The FMCW radar provides a bandwidth of more than 15 GHz leading to a range resolution of approximate 1 centimeter. Experimental inverse synthetic aperture radar (ISAR) results demonstrate the imaging capability of the FMCW radar at G-band.