Title :
The RADTRAN microwave surface emission models
Author :
Isaacs, Ronald G. ; Jin, Ya-qui ; Worsham, Robert D. ; Deblonde, Godelieve ; Falcone, Vincent J., Jr.
Author_Institution :
Atmos. & Environ. Res. Inc., Cambridge, MA, USA
fDate :
7/1/1989 12:00:00 AM
Abstract :
The AFGL RADTRAN microwave atmospheric transmission/brightness temperature computer code has been enhanced by a surface emissivity modeling subpackage. This enhancement will provide realistic calculations of frequency-dependent polarized surface emissivity to support simulations of Earth-viewing microwave sensing systems. These models are appropriate for the frequency range 1-40 GHz. Two distinct modeling approaches have been applied: one based on wave theory for random discrete scatterers, and one based on radiative transfer theory for continuous random media. The former approach is used to model the ocean surface, various forms of sea ice, and snow over land, whereas the latter is used to treat soils and vegetation. Surface emissivity values obtained from these models as functions of polarization, frequency, and look angle are illustrated
Keywords :
atmospheric radiation; geophysical techniques; oceanography; remote sensing; sea ice; snow; 1 to 40 GHz; AFGL; EHF; RADTRAN microwave surface emission models; SHF; UHF; atmosphere; brightness temperature computer code; frequency-dependent polarized surface emissivity; look angle; microwave; ocean surface; polarization; radiowave emission; radiowave propagation; remote sensing; sea ice; snow; soil; surface emissivity modeling subpackage; techniques; transmission; vegetation; Atmospheric modeling; Brightness temperature; Computational modeling; Frequency; Ocean temperature; Polarization; Random media; Scattering; Sea surface; Surface treatment;
Journal_Title :
Geoscience and Remote Sensing, IEEE Transactions on
