An example of thermometry in volume by microwave radiometry.
We depict a method of determination of the size D depth z and temperature T0 + delta T of a cylindrical thermal structure embedded in an homogeneous glossy material, in the present case, water. A microwave radiometric image at 3 GHz points out the location of the thermal structure; its threshold provides the diameter D of the structure. The depth z derives from the ratio of the maximal radiometric intensities at 1.5 and 3 GHz. The combination of D,z and of the radiometric intensities gives delta T.
Bocquet
B
B
Institut d'Electronique et de Microélectronique du Nord, Centre Hyperfrequences et Semiconducteurs, Université des Sciences et Technologies de Lille, Villeneuve d'Ascq, France.
Van de Velde
J C
JC
Mamouni
A
A
LeRoy
Y
Y
D001831:Body Temperature; D001330:Electronic Data Processing; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008872:Microwaves; D011874:Radiometry / Q000379:methods; D013821:Thermometers