EVALUATION OF THE
STATISTICAL CHARACTERISTICS OF THE SIGNAL FADING IN SATELLITE RADIOLINKS
Adán Espinoza Millán 1, Esaú Vicente Vivas 2, Vladimir M. Shakhparonov 1
1 Lomonosov Moscow State University,
2 Universidad Nacional Autónoma de México (UNAM)
Received October 3, 2011
Abstract.
The main objective of this paper is to
find and identify the fading fluctuations in telemetry signals caused by no
homogeneities of the communication channel. The employed methodology follows
the next steps: remove the envelope of the signal amplitude; identifying the
Gaussian component; identifying the non-Gaussian component and obtaining the
statistical characteristics from Gaussian and non-Gaussian components. Then,
the results are statistically treated in order to obtain a diffusion K
parameter of Rician fading which are associated with fading in atmosphere and
ionosphere layers. In this way the communications channel among satellite and
ground station is characterized and a BER parameter can be obtained. The
methodology is applied to telemetry signals of the Moscow State University microsatellite
better known as “Universitetsky-Tatiana” and the results are discussed.
Keywords: Ionosphere, fading, wavelets,
satellite.