DocumentCode
2208518
Title
Extraction, analysis and interpretation of digital ionograms
Author
Bartlett, A. ; Gallagher, M. ; Darnell, M.
Author_Institution
Hull-Lancaster Commun. Res. Group, UK
fYear
1994
fDate
4-7 Jul 1994
Firstpage
278
Lastpage
282
Abstract
A digital ionogram is constructed from the impulse responses of sampled channels. If each sampled channel is processed in isolation, random channel noise is often interpreted as a true propagation mode. To overcome this problem, several adjacent channels can be processed together. The improvement of the impulse response and displayed ionogram by the application of median filters and low pass spatial filters is presented
Keywords
filtering and prediction theory; ionospheric electromagnetic wave propagation; low-pass filters; radiowave propagation; signal processing; spatial filters; telecommunication channels; transient response; adjacent channels; digital ionograms; impulse responses; ionograms analysis; ionograms extraction; ionograms interpretation; low pass spatial filters; median filters; propagation mode; random channel noise; sampled channels;
fLanguage
English
Publisher
iet
Conference_Titel
HF Radio Systems and Techniques, 1994., Sixth International Conference on
Conference_Location
York
Print_ISBN
0-85296-616-4
Type
conf
DOI
10.1049/cp:19940507
Filename
337054
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