IROTI: A new index to detect and identify traveling ionospheric disturbances and equatorial plasma bubbles

X Ren, X Le, D Mei, H Liu, X Zhang - GPS Solutions, 2024 - Springer
The rate of total electron content index (ROTI), as the most common ionospheric disturbance
index, is often used to detect equatorial plasma bubbles (EPBs). But it cannot effectively …

Neural Network Entropy (NNetEn): Entropy-Based EEG Signal and Chaotic Time Series Classification, Python Package for NNetEn Calculation

A Velichko, M Belyaev, Y Izotov, M Murugappan… - Algorithms, 2023 - mdpi.com
Entropy measures are effective features for time series classification problems. Traditional
entropy measures, such as Shannon entropy, use probability distribution function. However …

Novel techniques for improving NNetEn entropy calculation for short and noisy time series

H Heidari, A Velichko, M Murugappan… - Nonlinear …, 2023 - Springer
Entropy is a fundamental concept in the field of information theory. During measurement,
conventional entropy measures are susceptible to length and amplitude changes in time …

Effects of local time on the variations of the total electron contents at an American and Asian longitudes and their comparison with IRI-2016, IRI-Plas2017 and NeQuick …

YO Kayode, D Okoh, EO Onori, OO Ometan… - Journal of Atmospheric …, 2024 - Elsevier
Ionospheric modelling is one of the major tools to study the behavior of the ionosphere.
Ionospheric models have been useful in predicting the true state of the ionosphere …

Dynamical Complexity Transitions During High‐Intensity Long Duration Continuous Auroral Activities (HILDCAA) Events: Feature Analysis Based on Neural Network …

IA Oludehinwa, A Velichko, BO Ogunsua… - Space …, 2023 - Wiley Online Library
In this study, we examine the dynamical complexity transitions during HILDCAA events.
HILDCAA preceded by an Interplanetary Coronal Mass Ejection (ICME) storm recovery …

Characterizing perturbed ionospheric total electron content configurations using the Shannon information content

R Pradipta, B Kim - Advances in Space Research, 2024 - Elsevier
Anomalous or perturbed ionospheric conditions can have adverse consequences for many
space-related applications, including global navigation satellite and communication …