Application of Digital Filters to Check Quality of the Automatically Scaled Ionograms

Luboš Rejfek, Zbyšek Mošna, Daniel Kouba, Josef Boška, Dalia Burešová
2015 Journal of Electrical Engineering  
The ionospheric observatory Pruhonice serves to monitor the state of ionosphere using ground-based vertical sounding instrument - the Digisonde DPS-4D. Measured ionograms are automatically evaluated (scaled) and basic characteristics are derived. The ionograms and the scaled parameters are sent to the international databases. Especially during disturbed conditions the automatic scaling could give unreliable results. This paper presents simple method how to detect accidental errors in automatic
more » ... caling based on the parameters derived from ionograms and on an application of the finite impulse response filters.
doi:10.2478/jee-2015-0026 fatcat:wynw7qs3tna3bmxsb2rn6x2qza