An Automatic CADI’s Ionogram Scaling Software Tool for Large Ionograms Data Analytics [PDF]
IEEE Access, 2022 T. Venkateswara Rao +2 more
openaire +2 more sources
Assessing the quality of ionogram interpretation using the HF Doppler technique [PDF]
, 2007 International audienceThe first joint common volume measurements by the Digisonde Portable Sounder (DPS-4) and a new Doppler type system has been run at the Pruhonice ionospheric observatory (49.99° N, 14.54° E) since January 2004. The measurement of the
Lastovicka, J. +5 more
core +4 more sources
Synthetic‐Data‐Driven Supervised Learning for Pixel‐Wise Recognition of Ionogram Layer Traces
Journal of Geophysical Research: Machine Learning and ComputationThe significance of automatic ionogram data interpretation is growing with the increasing number of ionosondes operating at minute‐level cadence. In recent years, deep‐learning models have substantially advanced ionogram pattern recognition.
Ruslan Sherstyukov +4 more
doaj +1 more source
IRI-2012 MODEL ADAPTABILITY ESTIMATION FOR AUTOMATED PROCESSING OF VERTICAL SOUNDING IONOGRAMS [PDF]
Научно-технический вестник информационных технологий, механики и оптики, 2014 The paper deals with possibility of IRI-2012 global empirical model applying to the vertical sounding of the ionosphere semiautomatic data processing.
V. D. Nikolaeva +3 more
doaj
Some aspects of large-scale travelling ionospheric disturbances which originate at conjugate locations in auroral zones, cross the equator and sometimes encircle the earth [PDF]
Annales Geophysicae, 2011 The occurrence of large-scale travelling ionospheric disturbances (LS-TIDs) has been examined. Initially some literature on their generation is considered.
G. G. Bowman, I. K. Mortimer
doaj +1 more source
Data Services Upgrade: Perfecting the ISIS-I Topside Digital Ionogram Database [PDF]
, 2015 The ionospheric topside sounders of the International Satellites for Ionospheric Studies (ISIS) program were designed as analog systems. More than 16,000 of the original telemetry tapes from three satellites were used to produce topside digital ionograms,
Huang, Xueqin +6 more
core
PyRayHF: An Open Source Ray‐Tracing Forward Operator for Assimilating Oblique Ionograms
Radio Science, Volume 61, Issue 8, August 2026.Abstract Oblique high‐frequency (HF) ionospheric measurements contain valuable information about electron density structure, but remain difficult to assimilate operationally due to the computational cost of ray tracing. PyRayHF is an open‐source, fully Python‐based framework that addresses such difficulties through the implementation of efficient ...
Victoriya V. Forsythe +9 more
wiley +1 more source
Trace Extraction and Repair of the F Layer from Pictorial Ionograms
AtmospherePublicly available ionograms are often in the form of pictures. This paper proposes a novel algorithm for extracting and repairing the F layer traces from pictorial ionograms.
Jiayi Wang +4 more
doaj +1 more source
Numerical simulation of the propagation of electromagnetic waves in ionospheric irregularities
Earth and Planetary Physics, 2020 The characteristics of high-frequency (HF) electromagnetic (EM) wave propagation can be affected when EM waves propagate in the ionosphere. When ionospheric irregularities appear in the ionosphere, they can have a serious impact on the propagation of HF ...
ChunHua Jiang +4 more
doaj +1 more source
Ionogram inversion for a tilted ionosphere
, 1990 Digital ionosondes such as the Dynasonde disclose that the ionosphere is seldom horizontal even when it is plane stratified to a good approximation. The local magnetic dip does not then determine correctly the radiowave propagation angle for inversion of
Wright, J.W., J. W. Wright
core +1 more source