Patent ID: 8228374

Claim:
A method to determine a dielectric permeability of a dielectric object, comprising: radiating the dielectric object and a reflector by coherent microwave radiation at N frequencies, wherein the reflector is a surface reflecting back the coherent microwave radiation; recording signals reflected from the dielectric object and the reflector; processing the recorded signals by coherent processing to generate microwave images of the dielectric object and the reflector; creating a three-dimensional microwave image of the dielectric object and the reflector, wherein the three-dimensional microwave image of the dielectric object is created only for one three-dimensional surface formed with points that have maximal values of intensity in the microwave images of the dielectric object and the reflector; using two video cameras to produce two video images of an area where the dielectric object is located; digitizing the two video images and producing a digital three-dimensional video image of the area where the dielectric object is located; synchronizing the three-dimensional video image with the three-dimensional microwave image; combining the three-dimensional video image and the three-dimensional microwave image in one coordinate system, and; determining the dielectric permeability of the object ∈, using the combined three-dimensional video image and three-dimensional microwave image of the one coordinate system, according to the formula: ∈=[( Z 2 −Z 3 )/( Z 1 −Z 3 )] 2 , wherein: Z 1 is a distance between a source of microwave radiation and the reflector of the three-dimensional microwave image where the reflector is not covered with the dielectric object, Z 2 is a distance between the source of microwave radiation and a section of the reflector of the three-dimensional microwave image where the dielectric object is located, Z 3 is a distance between the source of microwave radiation and a section of the three-dimensional video image of the area where the dielectric object is located, and distances Z 1 , Z 2 and Z 3 are all distances from the one coordinate system.