IonSAT - Grup de determinació Ionosfèrica i navegació per SAtèl·lit i sistemes Terrestres: Enviaments recents

Ara es mostren els items 1-12 de 157

    • Ionospheric response to the 2020 Samos earthquake and tsunami 

      Alfonsi, Lucilla; Cesaroni, Claudio; Hernández Pajares, Manuel; Astafyeva, Elvira; Bufféral, Simon; Elias, Panagiotis; Belehaki, Anna; Ioanna, Tsagouri; Yang, Heng; Guerra, Marco (Springer, 2024-01-19)
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      On 30 October 2020 at 11:51 UT, a magnitude 7.0 earthquake occurred in the Dodecanese sea (37.84°N, 26.81°E, 10 km depth) and generated a tsunami with an observed run-up of more than 1 m on the Turkish coasts. Both the ...

    • Validation of global ionospheric models using long-term observations of pulsar Faraday rotation with the LOFAR radio telescope 

      Porayko, Nataliya; Mevius, Maaijke; Hernández Pajares, Manuel; Tiburzi, Caterina; Olivares Pulido, Germán; Liu, Qi; Verbiest, Joris; Künsemöller, Jörn; Krishnakumar, Moochickal Ambalappat; Bak Nielsen, Ann Sofie; Brüggen, Marcus; Graffigna, Victoria; Dettmar, Ralf Jürgen; Kramer, Michael (Springer Nature, 2023-12-13)
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      Broad band pulsar radiation can be effectively used to monitor the properties of the magneto-ionic media through which it propagates. Faraday rotation calculated from polarised pulsar observations provides an integrated ...

    • GNSS solar astronomy in real-time during more than one solar cycle 

      Hernández Pajares, Manuel; García Rigo, Alberto; Monte Moreno, Enrique; Liu, Qi; Roma Dollase, David; Yang, Heng; Beniguel, Yannick; Moreno Borrás, David; Fors Aldrich, Octavi; Lyu, Haixia; Orús Pérez, Raul; Ventura Traveset, Javier (Elsevier, 2023-12-09)
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      This work presents a summary of the continuous non-stop (hereinafter 24/7) real-time measurement and warning system for EUV solar activity, which is based on worldwide multifrequency Global Navigation Satellite Systems ...

    • The correlation between ionospheric electron density variations derived from swarm satellite observations and seismic activity at the Australian–Pacific tectonic plate boundary 

      Jarmolowski, Wojciech; Wielgosz, Pawel; Hernández Pajares, Manuel; Heng, Yang; Milanowska, Beata; Krypiak-Gregorczyk, Anna; Monte Moreno, Enrique; García Rigo, Alberto; Graffigna, Victoria; Haagmans, Roger (Multidisciplinary Digital Publishing Institute (MDPI), 2023-11-29)
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      Swarm electron density (Ne) observations from the Langmuir probe (LP) can detect ionospheric disturbances at the altitude of a satellite. Along-track satellite observations provide a large number of very short observations ...

    • Power-law distribution of rapid ionosphere electron content fluctuations via GNSS measurements 

      Monte Moreno, Enrique; Hernández Pajares, Manuel; Yang, Heng (Institute of Electrical and Electronics Engineers (IEEE), 2023)
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      The ionosphere is a dynamic region of the Earth’s upper atmosphere that exhibits various fluctuations in electron density. These fluctuations can be estimated using measurements from the global navigation satellite system ...

    • PPP at low latitudes with ionospheric model exclusively based on single frequency GNSS measurements 

      Christovam de Souza, Ana Lucia; Prol, Fabricio dos Santos; Jerez, Gabriel Olivera; Hernández Pajares, Manuel; Camargo, Paulo de Oliveira (John Wiley & sons, 2023-08-01)
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      Single frequency users of the Global Navigation Satellite System (GNSS) should correct the ionospheric delay to obtain positioning solutions. A valuable source of ionospheric delay corrections is the global ionospheric ...

    • Ionospheric weather at two Starlink launches during two-phase geomagnetic storms 

      Gulyaeva, Tamara L.; Hernández Pajares, Manuel; Stanislawska, Iwona (Multidisciplinary Digital Publishing Institute (MDPI), 2023-08-07)
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      The launch of a series of Starlink internet satellites on 3 February 2022 (S-36), and 7 July 2022 (S-49), coincided with the development of two-phase geomagnetic storms. The first launch S-36 took place in the middle of ...

    • Assessment of GRAS ionospheric measurements for ionospheric model assimilation 

      Mainul Hoque, Mohammed; Prol, Fabricio dos Santos; Hernández Pajares, Manuel; Notarpietro, Riccardo; Yuan, Liangliang; Olivares Pulido, Germán; Graffigna, Victoria; von Engeln, Axel; Marquardt, Christian (Multidisciplinary Digital Publishing Institute (MDPI), 2023-06-15)
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      We conducted a study to assess the GNSS (Global Navigation Satellite System) Receiver for Atmospheric Sounding (GRAS) ionospheric data quality by processing Radio Occultation (RO) observations of ionospheric products. The ...

    • Real-time tomographic inversion of truncated ionospheric GNSS radio occultations 

      Olivares Pulido, Germán; Hernández Pajares, Manuel; Monte Moreno, Enrique; Lyu, Haixia; Graffigna, Victoria; Cardellach Galí, Estel; Mainul Hoque, Mohammed; Prol, Fabricio dos Santos; Notarpietro, Riccardo; García Fernández, Miquel (Multidisciplinary Digital Publishing Institute (MDPI), 2023-06-19)
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      This paper presents a new way of combining Abel inversion and the Chapman model with a linearly increasing scale height to retrieve ionospheric electron density vertical profiles from truncated-sounding radio-occultation ...

    • Study of ionospheric bending angle and scintillation profiles derived by GNSS radio-occultation with MetOp-A satellite 

      Prol, Fabricio dos Santos; Mainul Hoque, Mohammed; Hernández Pajares, Manuel; Yuan, Liangliang; Olivares Pulido, Germán; von Engeln, Axel; Marquardt, Christian; Notarpietro, Riccardo (Multidisciplinary Digital Publishing Institute (MDPI), 2023-03-20)
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      In this work, a dedicated campaign by MetOp-A satellite is conducted to monitor the ionosphere based on radio-occultation (RO) measurements provided by the onboard GNSS (Global Navigation Satellite System) Receiver for ...

    • A new method of electron density retrieval from MetOp-A’s truncated radio occultation measurements 

      Mainul Hoque, Mohammed; Yuan, Liangliang; Prol, Fabricio dos Santos; Hernández Pajares, Manuel; Notarpietro, Riccardo; Jakowski, Norbert; Olivares Pulido, Germán; von Engeln, Axel; Marquardt, Christian (Multidisciplinary Digital Publishing Institute (MDPI), 2023-03-03)
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      The radio occultation (RO) measurements of the Global Navigation Satellite System’s (GNSS’s) signals onboard a Low Earth Orbiting (LEO) satellite enable the computation of the vertical electron density profile from the LEO ...

    • Pre-earthquake ionospheric anomalies before three major earthquakes by GPS-TEC and GIM-TEC data during 2015–2017 

      Tariq, Muhammad Arslan; Shah, Munawar; Hernández Pajares, Manuel; Iqbal, Talat (2019-04-01)
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      Accés restringit per política de l'editorial
      The dual-frequency satellite-based measurements from Global Positioning System (GPS) may provide feasible ways of studying and potentially detecting of earthquake (EQ) related anomalies in the ionosphere. In this paper, ...