National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
Měření driftů v F-vrstvě ionosféry, první výsledky pro zimu 2006
Kouba, Daniel ; Šauli, Petra ; Boška, Josef ; Santolík, Ondřej
We describe step by step a newly improved method of drift velocity evaluation: (i) height range selection, (ii) Doppler frequency shift value limitation, and (iii) choice of the maximum incidence angle. Our preliminary results describe drift velocity behaviour during quiet geomagnetic conditions for the winter season for station Pruhonice.
Driftová měření pro F-vrstvu ionosféry na stanici Průhonice - sezonní průběhy charakteristik pro klidné dny
Kouba, Daniel ; Šauli, Petra ; Boška, Josef ; Santolík, Ondřej
In the paper we concentrate on the F-region drift-data measured by the ionospheric station Pruhonice (50.0N, 14.6E). We demonstrate application of the skymap points selection method on the data set collected in 2006, during a period of low geomagnetic and solar activity. Using histograms of horizontal and vertical velocity components we found prevailing directions of plasma motion corresponding to specified ranges of velocities. Within the analyzed data we found significant decrease of the daily-maximal horizontal component from winter to summer 2006.

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