IONSAT té com objectius la investigació, desenvolupament i prototipatge en el camp de la determinació ionosfèrica precisa (com contingut electrònic, ones ionosfèriques, signatures de fulguracions solars, centelleig i senyals relacionats amb sismes), meteorologia espacial, i navegació precisa, basat en sistemes de satèl·lits (com els de navegació global,-GPS, GLONASS, Galileo o Beidou-, i ampliacions com WAAS, EGNOS, MSAS o GAGAN, o altímetres com JASON2)

Investigación, desarrollo y prototipado en el campo de la determinación ionosférica precisa (contenido electrónico total, densidad de número de electrones libres, ondas ionosféricas, signaturas de fulguraciones solares, centelleo, señales relacionadas con seísmos, entre otros), meteorología espacial y navegación precisa, basado en sistemas de satélites (tales como los sistemas de satélites para la navegación global, -GPS, GLONASS, Galileo o Beidou-, sistemas de ampliación como WAAS, EGNOS, MSAS o GAGAN, o altímetros como TOPEX, JASON, JASON2, entre otros).

Research, development and prototyping in the field of precise ionospheric determination (such as the total electron content, electron density, ionospheric waves,solar flare signatures, scintillation, seismic-related signatures, among others), space weather and precise navigation, based on satellite systems (such as Global Navigation Satellite Systems, for example GPS, GLONASS, Galileo and Beidou, augmentation systems such as WAAS, EGNOS, MSAS or GAGAN, or altimeters such as TOPEX, JASON, JASON2, among others).

Research, development and prototyping in the field of precise ionospheric determination (such as the total electron content, electron density, ionospheric waves,solar flare signatures, scintillation, seismic-related signatures, among others), space weather and precise navigation, based on satellite systems (such as Global Navigation Satellite Systems, for example GPS, GLONASS, Galileo and Beidou, augmentation systems such as WAAS, EGNOS, MSAS or GAGAN, or altimeters such as TOPEX, JASON, JASON2, among others).

Recent Submissions

  • 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 ...
  • Quasi-4-dimension ionospheric modeling and its application in PPP 

    Gu, Shengfeng; Chengkun, Gan; Chengpeng, He; Lyu, Haixia; Hernández Pajares, Manuel; Yidong, Lou; Jianghui, Geng; Qile, Zhao (2022-11-02)
    Article
    Open Access
    Ionospheric delay modeling is not only important for GNSS based space weather study and monitoring, but also an efficient tool to overcome the long convergence time of PPP. In this study, a novel model, denoted as Q4DIM ...
  • WIDE AREA Real Time Kinematics (WARTK): nuevas posibilidades de posicionamiento y navegación GNSS precisa a escala continental 

    Aragón Ángel, María Ángeles; Hernández Pajares, Manuel; Juan Zornoza, José Miguel; Sanz Subirana, Jaume (2008-05-05)
    Article
    Open Access
    En este artículo se presenta la nueva técnica Wide Area Real Time Kinematics (WARTK) que permite la extensión de técnicas previas de navegación precisa por satélite, como por ejemplo el Real Time Kinematics (RTK), más allá ...
  • The implications of ionospheric disturbances for precise GNSS positioning in Greenland 

    Paziewski, Jacek; Høeg, Per; Sieradzki, Rafal; Jin, Yaqi; Jarmolowski, Wojciech; Hoque, Mainul; Berdermann, Jens; Hernández Pajares, Manuel; Wielgosz, Pawel; Lyu, Haixia; Miloch, Wojciech J.; Orús Pérez, Raul (EDP Sciences, 2022-09-14)
    Article
    Open Access
    Ionospheric irregularities impair Global Navigation Satellite System (GNSS) signals and, in turn, affect the performance of GNSS positioning. Such effects are especially evident at low and high latitudes, which are currently ...
  • Climatology and modeling of ionospheric irregularities over Greenland based on empirical orthogonal function method 

    Jin, Yaqi; Clausen, Lasse B. N.; Miloch, Wojciech J.; Høeg, Per; Jarmolowski, Wojciech; Wielgosz, Pawel; Paziewski, Jacek; Milanowska, Beata; Hoque, Mainul; Berdermann, Jens; Lyu, Haixia; Hernández Pajares, Manuel; García Rigo, Alberto (EDP Sciences, 2022-05-31)
    Article
    Open Access
    This paper addresses the long-term climatology (over two solar cycles) of total electron content (TEC) irregularities from a polar cap station (Thule) using the rate of change of the TEC index (ROTI). The climatology reveals ...
  • Systematic detection of anomalous ionospheric perturbations above LEOs from GNSS POD Data including possible tsunami signatures 

    Yang, Heng; Hernández Pajares, Manuel; Jarmolowski, Wojciech; Wielgosz, Pawel; Vadas, Sharon L.; Colombo, Oscar L.; Monte Moreno, Enrique; García Rigo, Alberto; Graffigna, Victoria; Krypiak-Gregorczyk, Anna; Milanowska, Beata; Bofill Soliguer, Pablo; Olivares Pulido, Germán; Liu, Qi; Haagmans, Roger (Institute of Electrical and Electronics Engineers (IEEE), 2022-06-13)
    Article
    Open Access
    In this article, we show the capability of a global navigation satellite system (GNSS) precise orbit determination (POD) low Earth orbit (LEO) data to detect anomalous ionospheric disturbances in the spectral range of the ...
  • GPS and Galileo Wide Area RTK concepts 

    Hernández Pajares, Manuel; Juan Zornoza, José Miguel; Sanz Subirana, Jaume; Garcia Rodriguez, Alberto (Institut de Geomàtica, 2005)
    Conference report
    Open Access
  • Preliminary NeQuick assessment for future single frequency users of GALILEO 

    Aragón Ángel, María Ángeles; Orús Pérez, Raül; Hernández Pajares, Manuel; Juan Zornoza, José Miguel; Sanz Subirana, Jaume (2005)
    Conference report
    Open Access
    The NeQuick model is the ionospheric mo del that will be used by the GALILEO single frequency user to compute ionospheric corrections. In this framework, the aim of this study is to show a preliminary assessment of the ...
  • Impact and synergies of GIM error estimates on the VTEC interpolation and single-frequency PPP at low latitude region 

    Jerez, Gabriel Olivera; Hernández Pajares, Manuel; Goss, Andreas; Menezes da Silva, Crislaine; Alves, Daniele Barroca Marra; Monico, João Francisco Galera (2022-04-01)
    Article
    Open Access
    The vertical total electron content (VTEC) is one of the key quantities to describe variations of the ionosphere and can be pro- vided to users to correct the ionospheric disturbances for GNSS (Global Navigation Satellite ...
  • Global monitoring of ionospheric weather by GIRO and GNSS data fusion 

    Galkin, Ivan; Fron, Adam; Reinisch, Bodo W.; Hernández Pajares, Manuel; Krankowski, Andrzej; Nava, Bruno; Bilitza, Dieter; Kotulak, Kacper; Flisek, Pawel; Li, Zishen; Wang, Ningbo; Roma Dollase, David; García Rigo, Alberto; Batista, Inez (2022-02-23)
    Article
    Open Access
    Prompt and accurate imaging of the ionosphere is essential to space weather services, given a broad spectrum of applications that rely on ionospherically propagating radio signals. As the 3D spatial extent of the ionosphere ...
  • Comprehensive study on the tropospheric Wet Delay and horizontal gradients during a severe weather event 

    Graffigna, Victoria; Hernández Pajares, Manuel; Azpilicueta, Francisco; Gende, Mauricio (Multidisciplinary Digital Publishing Institute (MDPI), 2022-02-12)
    Article
    Open Access
    GNSS meteorology is today one of the most growing technologies to monitor severe weather events. In this paper, we present the usage of 160 GPS reference stations over the period of 14 days to monitor and track Hurricane ...
  • Method for forecasting ionospheric electron content fluctuations based on the optical flow algorithm 

    Monte Moreno, Enrique; Hernández Pajares, Manuel; Yang, Heng; García Rigo, Alberto; Jin, Yaqi; Høeg, Per; Miloch, Wojciech J.; Wielgosz, Pawel; Jarmolowski, Wojciech; Paziewski, Jacek; Milanowska, Beata; Hoque, Mainul; Orús Pérez, Raul (2022-01-01)
    Article
    Open Access
    We present the optical flow algorithm for forecasting the rate of total electron content index (OFROTI). It consists of a method for predicting maps of rapid fluctuations of ionospheric electron content in terms of global ...

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