IDENTIFICATION OF POTENTIALLY HAZARDOUS SUBSTANCES USING ACTIVE ELECTROMAGNETIC WAVES Russian patent published in 2014 - IPC G01S13/88 G01S7/41 

FIELD: physics.

SUBSTANCE: invention relates to imaging systems and can be used to detect concealed objects. Electrical properties of concealed objects, for example permittivity, can be obtained from information on incident, reflected and transmitted electromagnetic waves in an imaging system. The imaging system comprises a transmitter for directing radiation into the inspected volume, a receiver for receiving scattered radiation from said volume, a reflecting array for focusing an incident radiation beam, a processor for processing scattered radiation for imaging in accordance with the amplitude and phase of the received radiation and a display. The difference in the amplitude and phase between the object and the reflecting space is used to estimate relative permittivity and therefore serves to classify objects using a relative permittivity database of substances.

EFFECT: detecting concealed objects.

15 cl, 4 dwg