Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/10467
AuthorsPezzopane, M.* 
Pillat, V. G.* 
Fagundes, P. R.* 
TitleAutomatic scaling of critical frequency foF2 from ionograms recorded at Sao José dos Campos, Brazil: a comparison between Autoscala and UDIDA tools
Issue Date2017
DOI10.1007/s11600-017-0015-z
URIhttp://hdl.handle.net/2122/10467
KeywordsIonogram
Ionosonde
Low-latitude ionosphere
Critical frequency foF2
Automatic scaling
Subject Classification01. Atmosphere::01.02. Ionosphere::01.02.99. General or miscellaneous 
01. Atmosphere::01.02. Ionosphere::01.02.02. Dynamics 
01. Atmosphere::01.02. Ionosphere::01.02.05. Wave propagation 
01. Atmosphere::01.02. Ionosphere::01.02.06. Instruments and techniques 
05. General::05.07. Space and Planetary sciences::05.07.02. Space weather 
AbstractThis paper considers a dataset of ionograms recorded by the CADI ionosonde installed at Sao José dos Campos (SJC; 23.2°S, 45.9°W, magnetic latitude 14.1°S), Brazil, to compare two autoscaling systems: Autoscala, developed by the Istituto Nazionale di Geofisica e Vulcanologia, and the UDIDA-scaling, developed by the Universidade do Vale do Paraı´ba. The analysis, focused on the critical frequency of the F2 layer, foF2, shows that the two systems work differently. The UDIDA-scaling gives always a value of foF2 as output, regardless of the presence of the ionogram trace and its definition, while Autoscala tends to reject ionograms for which the digital information is considered insufficient. As a consequence, the UDIDA-scaling can autoscale more foF2 values than Autoscala, but Autoscala can discard a larger number of ionograms for which the trace is unidentifiable. Discussions are made on the accuracy of the foF2 values given as output, as well as on the main shortcomings characterizing the two systems.
Appears in Collections:Papers Published / Papers in press

Files in This Item:
File Description SizeFormat 
Pezzopane SJAAutoscaling.docfull draft copy4.85 MBMicrosoft WordView/Open
Show full item record

Page view(s)

16
Last Week
3
Last month
4
checked on Oct 20, 2017

Download(s)

13
checked on Oct 20, 2017

Google ScholarTM

Check

Altmetric