Projektdetaljer
Beskrivelse
Millimeter frequency satellite links are prone to variations in
attenuation over a large range due to rain, more than 30 dB. This has
been considered to be caused by meteorological conditions. Statistical
distributions have been fit-to-data with little or no physical
insight. It is the purpose of this paper to show that the dynamic
variations are Ricean or Rayleigh type fading, caused by multipath
from the rain. This opens the possibility of exact distributions of
Doppler variations and of the recently studied rain fade slope, which
in the limit of heavy rain follows a Student’s t- distribution with
the Doppler spread as parameter. A new development in generalized
solution to the Rician case is also presented.
attenuation over a large range due to rain, more than 30 dB. This has
been considered to be caused by meteorological conditions. Statistical
distributions have been fit-to-data with little or no physical
insight. It is the purpose of this paper to show that the dynamic
variations are Ricean or Rayleigh type fading, caused by multipath
from the rain. This opens the possibility of exact distributions of
Doppler variations and of the recently studied rain fade slope, which
in the limit of heavy rain follows a Student’s t- distribution with
the Doppler spread as parameter. A new development in generalized
solution to the Rician case is also presented.
Status | Igangværende |
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Effektiv start/slut dato | 01/09/2010 → … |