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Array radio imaging based on heterodyne detection with application of the continuous-wave radar technique
Korolyov S. A.
1, Goryunov A. V.1, Parshin V. V.2
1Institute for Physics of Microstructures, Russian Academy of Sciences, Nizhny Novgorod, Russia
2Institute of Applied Physics, Russian Academy of Sciences, Nizhny Novgorod, Russia
2Institute of Applied Physics, Russian Academy of Sciences, Nizhny Novgorod, Russia
Email: pesh@ipm.sci-nnov.ru
A new approach to the creation of millimeter-wave radio imaging systems is proposed. This approach is based on the use of an array receiver consisting of a densely packed (pixel size of 4 mm) array of planar mixers located in the focal plane of a quasi-optical objective, with application of the frequency-modulated continuous-wave radar technique. It has been demonstrated that the implementation of the heterodyne type of reception makes it possible to increase the distance range of the array radio imaging system up to ~ 100 m while maintaining the angular resolution at the previous level. Keywords: millimeter-wave imaging, frequency-modulated continuous-wave (FMCW) radar, focal-plane array (FPA) receiver
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