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A three-millimeter-wave array radar with a mirror objective
Korolyov S. A.
1, Zaitsev A. V.1
1Institute for Physics of Microstructures, Russian Academy of Sciences, Nizhny Novgorod, Russia
Email: pesh@ipm.sci-nnov.ru
The possibility of applying a mirror objective in a radar system based on a direct-conversion array receiver has been studied. A prototype has been developed for a 94 GHz array radar with a mirror objective formed as a parabolic reflector antenna which is widely used in satellite radio communications. The objective used has been shown to provide high-quality focusing of millimeter waves: radiation from a point reflector is focused into a spot with a size of about one pixel of the array receiver. The study has demonstrated that, in the case of the transmitted signal power of 4 mW, radiation beamwidth of 10o, and objective diameter of 60 cm, the system is able to detect an object with the effective scattering area of 1 m2 at a distance of up to 50 m. Keywords: millimeter waves, frequency-modulated continuous-wave radar, array receiver, quasioptical objective.
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