Results 11 to 20 of about 2,902 (228)
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 +2 more sources
Calibrating an Ionosonde for Ionospheric Attenuation Measurements. [PDF]
Sensors (Basel), 2018 Vertical ionospheric soundings have been performed at almost all ionospheric observatories with little attention to measuring the attenuation of the signal between transmission and reception. When the absorption has been determined, this has been achieved by comparing the received power after the first and second reflections, but this method has some ...
Gilli L, Sciacca U, Zuccheretti E.
europepmc +5 more sources
Thermospheric Parameters during Ionospheric G-Conditions
Remote Sensing, 2021 For the first time thermospheric parameters (neutral composition, exospheric temperature and vertical plasma drift related to thermospheric winds) have been inferred for ionospheric G-conditions observed with Millstone Hill ISR on 11–13 September 2005 ...
Loredana Perrone +2 more
doaj +1 more source
Universe, 2022 We used ground-based ionosonde observations at Ganzi (31.2° N, 100.4° E) to validate the COSMIC measurement in the middle latitude region of China during low solar activity.
Liangchen Hu +3 more
doaj +1 more source
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2020 Ionospheric clutter is a major factor affecting the performance of high-frequency surface wave radar (HFSWR). Previous studies have been mainly focused on the development of ionospheric clutter suppression methods involving delicate signal processing ...
Xuguang Yang +3 more
doaj +1 more source
A Comparative Study on Radio Frequency Interference Suppression and foF2 Scaling for Ionograms
Remote Sensing, 2023 In this paper, we compare the performances of radio frequency interference (RFI) suppression between radio frequency interference mitigation (RFIM) and frequency-domain adaptive clutter suppression (FACS) algorithms that apply to ionograms for foF2 ...
Zhao-Yu Chen +6 more
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The Comparison of Electron Density between CSES In Situ and Ground-Based Observations in China
Remote Sensing, 2022 As the observation accuracy of parameters in the ionosphere cannot be directly checked, the comparison with other observations is the main way to evaluate the data quality of satellite measurements.
Jing Liu +3 more
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TGO Ramfjordmoen Ionosonde Data December 2020
, 2021 About this dataset: This dataset contains ionosonde data in SAO format and ionograms in PNG format, and covers data from December 01-31, 2020.About the Tromsø Ionosonde (1993-present): Since 1980, the ionosonde was situated at 69° 35' N, 19° 13' E at ...
Tromsø Geophysical Observatory
core +1 more source
Climatology of Spread F over Tucumán from Massive Statistical Analysis of Autoscaled Data
Atmosphere, 2021 Automatic ionogram interpretation methods developed for real-time ionospheric monitoring can be applied in retrospective studies to analyze large quantities of data. The Autoscala software, implemented for such a purpose, includes a routine for automatic
Carlo Scotto, Dario Sabbagh
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The new AIS-INGV digital ionosonde
Annals of Geophysics, 2003 A new digital ionosonde called AIS-INGV (Advanced Ionospheric Sounder) was designed both for research and for routine service of HF radio wave propagation forecast.
J. A. Baskaradas +4 more
doaj +1 more source