FIELD: physics.
SUBSTANCE: apparatus has a transmitting and a receiving unit connected a recorder, a support-swivelling block on which is mounted a two-dimensional flat square equidistant array of identical and identically directed radar objects, placed at the nodes of a two-dimensional grid with square cells with spacing 
where λ is the wavelength, wherein one of the diagonals, the normal to the plane of the array, the normal to the plane of the front of the electromagnetic wave emitted by the transmitting unit and the normal to the plane of the front of the electromagnetic wave reflected from that array lie in a single plane.
EFFECT: high accuracy of measuring ultra-small values of effective scattering area of radar objects located in a confined measuring zone.
5 dwg
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