Exploració per autor "Hoque, Mainul"

Ara es mostren els items 1-9 de 9

    • Assessment of the capabilities and applicability of ionospheric perturbation indices provided in Europe 

      Borries, Claudia; Wilken, Volken; Jacobsen, Knut Stanley; García Rigo, Alberto; Dziak-Jankowska, Beata; Kervalishvili, Guram; Jakowski, Norbert; Tsagouri, Ioanna; Hernández Pajares, Manuel; Ferreira, Arthur A.; Hoque, Mainul (2020-08-01)
      Article
      Accés obert
      Perturbations in the ionosphere are of great interest not only for scientific research, but also for applications using transionospheric radiosignals (e.g. GNSS applications and HF communication), because the transmission ...

    • 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
      Accés obert
      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 ...

    • Comparative testing of four ionospheric models driven with GPS measurements 

      Zandbergen, R.; Feltens, Joachim; Angling, M; Jackson Booth, N; Jakowski, Norbert; Hoque, Mainul; Hernández Pajares, Manuel; Aragón Ángel, María Ángeles; Orús Pérez, Raül (2011-07-28)
      Article
      Accés obert
      In the context of the European Space Agency/European Space Operations Centre funded Study “GNSS Contribution to Next Generation Global Ionospheric Monitoring,” four ionospheric models based on GNSS data (the Electron ...

    • Ionosphere monitoring and forecast activities within the IAG working group “Ionosphere Prediction” 

      Hoque, Mainul; García Rigo, Alberto; Erdogan, Eren; Cueto, M.; Jakowski, Norbert; Berdermann, Jens; Hernández Pajares, Manuel; Schmidt, Michael; Wilken, Volken (2017)
      Comunicació de congrés
      Accés obert
      Ionospheric disturbances can affect technologies in space and on Earth disrupting satellite and airline operations, communications networks, navigation systems. As the world becomes ever more dependent on these technologies, ...

    • Ionospheric tomography by gradient-enhanced kriging with STEC measurements and ionosonde characteristics 

      Minkwitz, David; van den Boogaart, Karl Gerald; Gerzen, Tatjana; Hoque, Mainul; Hernández Pajares, Manuel (2016-11-14)
      Article
      Accés obert
      The estimation of the ionospheric electron density by kriging is based on the optimization of a parametric measurement covariance model. First, the extension of kriging with slant total electron content (STEC) measurements ...

    • 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
      Accés obert
      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 ...

    • Recent activities of IAG working group “Ionosphere Prediction” 

      Erdogan, Eren; Hoque, Mainul; García Rigo, Alberto; Cueto, M.; Schmidt, Michael; Jakowski, Norbert; Berdermann, Jens; Monte Moreno, Enrique; Hernández Pajares, Manuel (2018)
      Comunicació de congrés
      Accés obert
      Ionospheric disturbances pose, for instance, an increasing risk on economy, national security, satellite and airline operations, communications networks and the navigation systems. Constructing ...

    • 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
      Accés obert
      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 ...

    • 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
      Accés obert
      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 ...