Small scale stratification of the mid-latitude F-region
, 1987 lonograms recorded over limited frequency and height ranges have been used to reveal systematic structures on both main and range spread traces for a mid-latitude region. This fine structure has apparently not been reported previously.
Bowman G.G.
core +1 more source
Deep Neural Network-Based Inversion Method for Electron Density Profiles in Ionograms
AtmosphereAccurate inversion of ionograms of the ionosonde is of great significance for studying ionospheric structure and radio wave propagation. Traditional inversion methods usually describe the electron density profile based on preset polynomial functions, but
Longlong Niu +5 more
doaj +1 more source
Oblique echoes from large-scale horizontal gradients observed by Alouette-2 topside sounder [PDF]
, 1970 Alouette 2 satellite ionogram loop shaped traces resulting from oblique radio waves at edge of large scale horizontal depressions of electron ...
Ramasastry, J.
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Effect of quality and flow trimming on dataset metrics, aggregated by kit used.
, 2013 AT = Analysis trim, QT = Quality trim, HRI = High-residual ionogram trim (1-mers and 2-mers), HRI3 = High-residual ionogram trim (1-mer, 2-mer, 3-mers).
Philip Hugenholtz (13833) +4 more
core +1 more source
PERBANDINGAN ANOMALI FREKUENSI KRITIS LAPISAN F2 (foF2) IONOSFER PADA GEMPA BUMI LAUT DAN GEMPA BUMI DARAT PULAU SUMATERA [PDF]
, 2020 Pada saat akan terjadinya gempa bumi, maka akan diikuti dengan peningkatan injeksi gas radon di daerah zona persiapan gempa. Gas radon ini akan menyebabkan perubahan terhadap lapisan ionosfer.
Luthfia, Hafizhah
core
Calculation of midlatitude sporadic E group delay as function of frequency
, 2020 The deep quasiperiodic variations in the part of frequency dependence of amplitude of reflections from layer Es observed by Kazan ionosonde was discovered.
Akchurin A., Bochkarev V.
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Influence of Non-vertical Echoes to Ionogram Scaling
, 2011 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 ...
Kouba, Daniel
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Enhancing the ISIS-I Topside Digital Ionogram Database [PDF]
, 2018 Selected original analog telemetry tapes from three of the topside-sounder satellites of theInternational Satellites for Ionospheric Studies (ISIS) program, namely Alouette 2, ISIS I, and ISIS II, wereused in an earlier project to produce more than ...
Benson, Robert F. +4 more
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Satellite Traces: Ionogram Signatures of Bottom‐Side Upwelling Structures ‐ A Simulation Study
Geophysical Research LettersSatellite Traces (STs) are the important ionogram signatures for the presence of upwellings in the bottom‐side ionosphere, which provide the necessary seed perturbation for the development of equatorial plasma bubbles (EPBs).
M. Ankita +6 more
doaj +1 more source
Extraction, analysis and interpretation of digital ionograms
, 1994 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
Bartlett, A., Darnell, M., Gallagher, M.
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