METHOD OF DETECTING OBJECTS CONTAINING NONLINEAR ELEMENTS

摘要

FIELD: physics.SUBSTANCE: double-frequency probing signal whose spectrum contains spectral components concentrated near frequencies fand fis emitted towards the assumed location of the object, and a backscattering signal in a frequency range close to frequencies fand fis received. The probing signal with frequency fhas amplitude modulation with frequency F, and presence of an object containing a nonlinear element in the detection zone is indicated by the appearance of amplitude modulation with frequency F in the spectral component, the spectrum of which is concentrated near frequency f.EFFECT: high efficiency of detecting objects containing nonlinear elements.1 dwg