Influence of Non-vertical Echoes to Ionogram Scaling

0372660 - ÚFA 2012 RIV CZ eng C - Conference Paper (international conference)
Kouba, Daniel - Koucká Knížová, Petra
Influence of Non-vertical Echoes to Ionogram Scaling.
WDS’11 Proceedings of Contributed Papers: Part II: Physics of Plasmas and Ionized Media. Praha: MATFYZPRESS, 2011 - (Šafránková, J.; Pavlů, J.), s. 67-72. ISBN 978-80-7378-185-9.
[WDS 2011 - Annual Conference of Doctoral Students /20./. Prague (CZ), 31.05.2011-03.06.2011]
R&D Projects: GA AV ČR KJB300420904
Institutional research plan: CEZ:AV0Z30420517
Keywords : Digisonde * ionogram interpretation * spread F
Subject RIV: DG - Athmosphere Sciences, Meteorology

Digisonde DPS 4 replaced the older ionosonde IPS 42 KEL Aerospace in the Observatory Pruhonice in January 2004. Additional information about the wave polarization enables us to determine and to distinguish exactly between ordinary and extraordinary wave traces on the ionogram records. This new ability basically changes scaling of the ionograms comparing to the ionograms obtained by classical ionosondes. Digisonde measurements show that in some cases the interpretation of ionograms based on classical ionospheric soundings may lead to the systematic errors, which affect classical ionograms interpretation. We demonstrate possible significant misinterpretations of the ionograms obtained using the classical equipment that is not able to distinguish between ordinary and extraordinary modes and records only time of flight of the electromagnetic sounding pulse. We show the necessity to be careful in using an old ionosonde measurements and scaled data for further analysis.
Permanent Link: http://hdl.handle.net/11104/0205920