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National Repository of Grey Literature 1 records found  Search took 0.00 seconds. 
Zkušenosti s používáním metody local correlation tracking při studiu velkorozměrových rychlostních polí
 Švanda, Michal ; Sobotka, Michal ; Klvaňa, Miroslav
We verify the reliability of the method recently used for the calculation of the large-scale velocity fields on synthetic dopplergrams obtained by a very simple numerical simulation of the supergranular pattern. A series of synthetic dopplergrams was stretched by the known vector field and the LCT was applied. The results were compared with the original vector field. Applying the LCT method on synthetic data we got an important experience in the behaviour of this method when used on full-disc dopplergrams. On the basis of the described tests we assume that the use of LCT on full-disc dopplergrams provides sufficiently reliable results, so that method could be used for mapping the large-scale velocities with resolution 60" and an accuracy 10 m/s.
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