Zobrazeno 1 - 10 of 51 pro vyhledávání: '"Susan Skone"'
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Akademický článek
Post‐Sunset Field‐Line Resonances at Equatorial Latitudes Observed by Swarm
Autor: Hossein Ghadjari, David Knudsen, Susan Skone
Publikováno v: Geophysical Research Letters, Vol 50, Iss 14, Pp n/a-n/a (2023)
Abstract In this study employing data from the Swarm satellites at an altitude of ≈500 km, we present evidence of field‐line resonances (FLRs) in the Pc2‐3 (0.02–0.2 Hz) frequency band in the undisturbed post‐sunset region of the equatorial
Externí odkaz: https://doaj.org/article/8cfbc480cb474e978bf579fe4665c7e3
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Probability distribution of integrated power of equatorial ionosphere plasma density fluctuations measured by the Swarm Langmuir probes
Autor: Hossein Ghadjari, David Knudsen, Susan Skone
Ionospheric irregularities are structures or fluctuations of plasma density having different scale sizes. These irregularities can disrupt radio waves and produce errors in space-based or ground-based technologies, which depend on the GNSS/ GPS signa
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e8d74dfa02dc03b23b18e5a9eb899e80
https://doi.org/10.5194/egusphere-egu23-8677
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Altitude distribution of large and small-scale equatorial ionospheric irregularities sampled by the Swarm Echo satellite
Autor: Ali Mohandesi, David J. Knudsen, Susan Skone, Richard B. Langley, Andrew W. Yau
Variations in ionospheric electron density, so-called irregularities, produce rapid fluctuations on propagating communication and navigation signals, which can be severe near the magnetic equator and in the polar regions. This may result in positioni
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1e61484516eaa0ada7c91cfeb431e23d
https://doi.org/10.5194/egusphere-egu22-10326
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6
A Novel Approach to Improve GNSS Precise Point Positioning During Strong Ionospheric Scintillation: Theory and Demonstration
Autor: Bruno César Vani, Milton Hirokazu Shimabukuro, João Francisco Galera Monico, Biagio Forte, Haroldo Antonio Marques, Susan Skone, Igor Ponte Portella, Alison de Oliveira Moraes
Publikováno v: Vani, B C, Forte, B, Monico, J F G, Skone, S, Shimabukuro, M H, de O. Moraes, A, Portella, I P & Marques, H A 2019, ' A novel approach to improve GNSS Precise Point Positioning during strong ionospheric scintillation : theory and demonstration ', IEEE Transactions on Vehicular Technology, vol. 68, no. 5, 8663444, pp. 4391-4403 . https://doi.org/10.1109/TVT.2019.2903988
At equatorial latitudes, ionospheric scintillation is the major limitation in achieving high-accuracy GNSS positioning. This is because scintillation affects the tracking ability of GNSS receivers causing losses of lock and degradation on code pseudo
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3eb152f4b4eba7f8cab890a5881d5c15
https://doi.org/10.1109/tvt.2019.2903988
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7
Toward a Next Generation Particle Precipitation Model: Mesoscale Prediction Through Machine Learning (a Case Study and Framework for Progress)
Autor: Jesper Gjerloev, Binzheng Zhang, Téo Bloch, Kristina A. Lynch, Enrico Camporeale, Susan Skone, Mathew J. Owens, Jack Ziegler, Spencer Hatch, Ryan McGranaghan
Publikováno v: e2020SW002684
Space Weather
We advance the modeling capability of electron particle precipitation from the magnetosphere to the ionosphere through a new database and use of machine learning (ML) tools to gain utility from those data. We have compiled, curated, analyzed, and mad
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6f03f8c1bc1fe3671530dd748cf0f7be
http://arxiv.org/abs/2011.10117
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8
Characterization of Equatorial Low Latitude Ionospheric Scintillation of GPS Signals: An E-POP Experiment
Autor: Ali Mohandesi, David Knudsen, Susan Skone
Ionospheric irregularities are a major error source in GNSS positioning and navigation as they affect trans-ionospheric signal propagation. They cause random, rapid fluctuations in the intensity and phase of the received signal, referred to as ionosp
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3b375cc115b0de527b4a1b777db0adeb
https://doi.org/10.5194/egusphere-egu2020-10112
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9
Structure function analysis of plasma density fluctuations during total loss of lock of GPS signal events
Autor: Hossein Ghadjari, David Knudsen, Susan Skone
Ionospheric irregularities are fluctuations or structures of plasma density that affect the propagation of radio signals. Whenever large-scale irregularities break up into meso and small-scale irregularities, these processes become similar to a turbu
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ef16f712e23ff7d8f6be0d8afccad227
https://doi.org/10.5194/egusphere-egu2020-11622
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10
Characterizing Ionospheric Disturbances for Space Weather Hazard Mitigation
Autor: Maryam Najmafshar, Gary S. Bust, Susan Skone
The world relies increasingly on capabilities that are enabled or delivered by space-based systems, and there exists a need to continually refine our vulnerability assessment models and understanding of natural versus artificial threats. One area of
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::36b08c51bc48e003c7b8dd7c041b9ca4
https://doi.org/10.5194/egusphere-egu2020-12999
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