scholarly journals Electrodynamic model of relict radiation scattering by vegetation cover to improve the accuracy of soil moisture measurement by microwave radiometer

2019 ◽  
Vol 30 ◽  
pp. 15012
Author(s):  
Sergey Chigikov ◽  
Dmitri Gorbachev ◽  
Alexey Taradin ◽  
Maria Sidorova
Keyword(s):  
Soil Moisture ◽  
Brightness Temperature ◽  
Vegetation Cover ◽  
Microwave Radiometer ◽  
Soil Characteristics ◽  
Radio Brightness ◽  
Radiation Scattering ◽  
Electrodynamic Model ◽  
Radio Brightness Temperature ◽  
Soil Moisture Measurement

The possibilities of electrodynamic model of relict radiation scattering by vegetation cover to improve the accuracy of soil characteristics measurement by microwave radiometer are demonstrated. The dependence of the reflective characteristics of the soil-vegetation system on the type and parameters of vegetation cover is considered. The accuracy of measuring the radio brightness temperature of the soil is estimated depending on the type and characteristics of the vegetation cover.

scholarly journals Radial distributions of some constituents in M31, the galaxy and M33

1979 ◽  
Vol 84 ◽  
pp. 427-427
Author(s):  
Elly M. Berkhuijsen
Keyword(s):  
Brightness Temperature ◽  
Surface Density ◽  
Hii Regions ◽  
Radio Brightness ◽  
The Galaxy ◽  
Radio Brightness Temperature

The Figure shows the distributions perpendicular to the planes of the galaxies of: (a) the surface density of HI, σHI(R), (b) the surface density of HII regions, σHII(R), and (c) the radio brightness temperature, σTB(R). Details may be found in Berkhuijsen (A.A. 57, 9, 1977; Proc. IAU Symp. 77, 1978); here σHI(R) of the Galaxy was taken from Gordon and Burton (Ap. J. 208, 346, 1976) and σTB(R) of M31 has been revised. Distances to the centre are scaled with the Holmberg radius RH (21, 15 and 7.8 kpc for M31, Galaxy, M33).

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