Browsing by Author "Prol, Fabricio dos Santos"

Now showing items 1-11 of 11

    • A new method for ionospheric tomography and its assessment by ionosonde electron density, GPS TEC, and single-frequency PPP 

      Prol, Fabricio dos Santos; Camargo, Paulo de Oliveira; Hernández Pajares, Manuel; Honorato Muella, Marcio Tadeu de Assis (Institute of Electrical and Electronics Engineers (IEEE), 2019-01-05)
      Article
      Open Access
      A new tomographic method was developed with the main goal of mapping the ionosphere in the region of Brazil. The ionospheric background was estimated based on ionosonde and radio-occultation measurements to overcome the ...

    • 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)
      Article
      Open Access
      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 ...

    • Assessment of global ionospheric maps performance by means of ionosonde data 

      Jerez, Gabriel Olivera; Hernández Pajares, Manuel; Prol, Fabricio dos Santos; Alves, Daniele Barroca Marra; Monico, João Francisco Galera (Multidisciplinary Digital Publishing Institute (MDPI), 2020-10-21)
      Article
      Open Access
      This work presents a new method for assessing global ionospheric maps (GIM) using ionosonde data. The method is based on the critical frequency at the F2 layer directly measured by ionosondes to validate VTEC (vertical ...

    • 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)
      Article
      Open Access
      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 ...

    • 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)
      Article
      Open Access
      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 ...

    • 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)
      Article
      Open Access
      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 ...

    • Spatial and temporal features of the topside ionospheric electron density by a new model based on GPS radio occultation data 

      Prol, Fabricio dos Santos; Hernández Pajares, Manuel; Camargo, Paulo de Oliveira; Honorato Muella, Marcio Tadeu de Assis (2018-03)
      Article
      Open Access
      A new method for probing the spatial and temporal features of the topside ionosphere is presented. The Vary-Chap model given by linear functions was used to discover and report features of the topside scale height and its ...

    • St. Patrick’s Day 2015 geomagnetic storm analysis based on Real Time Ionosphere Monitoring 

      García Rigo, Alberto; Roma Dollase, David; Hernández Pajares, Manuel; Li, Zishen; Terkildsen, Michael; Ghoddousi Fard, Reza; Dettmering, Denise; Erdogan, Eren; Haralambous, Haris; Beniguel, Yannick; Berdermann, Jens; Kriegel, Martin; Krypiak-Gregorczyk, Anna; Gulyaeva, Tamara L.; Komjathy, Attila; Vergados, Panagiotis; Feltens, Joachim; Zandbergen, René; Olivares, German; Fuller Rowell, Tim; Altadill, David; Blanch, Estefania; Bergeot, Nicolas; Krankowski, Andrzej; Agrotis, Loukis; Galkin, Ivan; Orus-Perez, Raul; Prol, Fabricio dos Santos (2017)
      Conference lecture
      Open Access
      A detailed analysis is presented for the days in March, 2015 surrounding St. Patrick’s Day 2015 geomagnetic storm, based on the existing real-time and near real-time ionospheric models (global or regional) within the ...

    • 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)
      Article
      Open Access
      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 ...

    • Tomographic imaging of ionospheric plasma bubbles based on GNSS and radio occultation measurements 

      Prol, Fabricio dos Santos; Hernández Pajares, Manuel; Honorato Muella, Marcio Tadeu de Assis; Camargo, Paulo de Oliveira (Multidisciplinary Digital Publishing Institute (MDPI), 2018-10-01)
      Article
      Open Access
      Total electron content measurements given by the global navigation satellite system (GNSS) have successfully presented results to capture the signatures of equatorial plasma bubbles. In contrast, the correct reproduction ...

    • Topside ionospheric tomography exclusively based on LEO POD GPS carrier phases: application to autonomous LEO DCB estimation 

      Hernández Pajares, Manuel; Olivares Pulido, Germán; Hoque, Mainul; Prol, Fabricio dos Santos; Yuan, Liangliang; Notarpietro, Riccardo; Graffigna, Victoria (Multidisciplinary Digital Publishing Institute (MDPI), 2023-01-08)
      Article
      Open Access
      This paper presents a novel technique to estimate DCBs from GPS transmitters and receivers on-board Low Earth Orbit (LEO) satellites. The technique consists of obtaining the DCBs as residuals from the difference between ...