Abstract:
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 10$^\circ$, and objective diameter of 60 cm, the system is able to detect an object with the effective scattering area of 1 m$^2$ at a distance of up to 50 m.
Fulltext:
PDF file (423 kB)