FORMATION OF RADIOMETRIC CONTRASTS OF TARGETS IN THE MILLIMETER WAVELENGTH REGION

 

L. I. Fedoseev, A. A. Shvetsov
 

Institute of Applied Physics of RAS

Received June 30, 2010

 

 

Abstract. Basic physics and features of radiometric contrasts of targets in the millimeter wavelength region are considered. Correlation between the target contrast and difference of air surface temperature and radiation temperature of the sky averaged over upper hemisphere is established. It is shown that atmospheric brightness temperature at zenith angle of 60º in the millimeter wave windows can be used approximately as the averaged sky radiation temperature. This correlation established theoretically and confirmed by experiment may be used for contrasts prediction and systematization on the bases of statistical data of the aforementioned difference.

 

Keywords: remote sensing, radiometric contrasts, millimeter wavelength region.