Scintillation Prediction Using Improved Pre-Processed Radiosounding Data
Konferenz: EuCAP 2009 - 3rd European Conference on Antennas and Propagation
23.03.2009 - 27.03.2009 in Berlin, Germany
Tagungsband: EuCAP 2009
Seiten: 3Sprache: EnglischTyp: PDF
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Autoren:
Vanhoenacker-Janvier, Danielle; Oestges, Claude; Montenegro-Villacieros, Belen (Microwave Laboratory, Université catholique de Louvain, Place du Levant, 3 B1348 Louvain-la-Neuve, Belgium)
Malderen, Roeland Van; Backer, Hugo De (Royal Meteorological Institute of Belgium, Avenue Circulaire, 3 B1180 Brussels, Belgium)
Inhalt:
This paper is presenting a model for the prediction of cumulative statistics of amplitude scintillation at microwave frequencies, on an earth-space communication link. This model is using one year of pre-processed radiosonde data for which correction algorithms are applied in order to improve the vertical humidity profiles. The statistics of the vertical profile of the structure constant C2n of the troposphere is then calculated and used for the evaluation of the mean value of the variance of the scintillation amplitude (σ 2chi). Assuming a Gaussian distribution, the cumulative distribution of σ 2chi is then calculated. The statistics have been evaluated for 1990, using radiosonde launches from Uccle, Belgium, and compared to statistics of scintillation variance measured the same year at Louvain-la-Neuve, using the Olympus beacons.