Publication Date:
2022-02-16
Description:
This 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.
Description:
Published
Description:
173–187
Description:
2A. Fisica dell'alta atmosfera
Description:
JCR Journal
Description:
open
Keywords:
Ionogram
;
Ionosonde
;
Low-latitude ionosphere
;
Critical frequency foF2
;
Automatic scaling
;
01. 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
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
article
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