Browsing by Author "Roma Dollase, David"Més informació

Now showing items 1-18 of 18

    • Comparing performances of seven different global VTEC ionospheric models in the IGS context 

      Hernández Pajares, Manuel; Roma Dollase, David; Krankowski, Andrzej; García Rigo, Alberto; Orús Pérez, Raul (International GNSS Service (IGS), 2016)
      Conference report
      Restricted access - publisher's policy
      A summary of the main concepts on Global Ionospheric Map(s) (hereinafter GIM(s)) of Vertical Electron Content (VTEC), with special emphasis on their assessment, is presented in this paper. It is based on the experience ...

    • Consistency of seven different GNSS global ionospheric mapping techniques during one solar cycle 

      Roma Dollase, David; Hernández Pajares, Manuel; Krankowski, Andrzej; Kotulak, Kacper; Ghoddousi Fard, Reza; Yuan, Yunbin; Li, Zishen; Zhang, Hongping; Shi, Chuang; Wang, Cheng; Feltens, Joachim; Vergados, Panagiotis; Komjathy, Attila; Schaer, Stefan C.; García Rigo, Alberto; Gómez Cama, José Mª (2018-06)
      Article
      Open Access
      In the context of the International GNSS Service (IGS), several IGS Ionosphere Associated Analysis Centers have developed different techniques to provide global ionospheric maps (GIMs) of vertical total electron content ...

    • Design of a camera for the Image Stabilization System for the Solar Orbiter project 

      Roma Dollase, David (Universitat Politècnica de Catalunya, 2014-03)
      Master thesis
      Open Access
      [ANGLÈS] The Correlation Tracking Camera (CTC) is a high frame rate low resolution camera. It is used by the Image Stabilization System (ISS), which function is to detect and correct the jitter introduced by the spacecraft. ...

    • Global ionospheric maps : estimation and assessment in post-processing and real-time 

      Roma Dollase, David (Universitat Politècnica de Catalunya, 2019-04-09)
      Doctoral thesis
      Open Access
      The research of this paper-based dissertation is focused on Global Ionospheric Maps (GIM) generation and assessment. In summary, the novelty and thematic unity in this works relies on four different but complementary topics: ...

    • 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 ...

    • 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, 2024-09-15)
      Article
      Open Access
      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 ...

    • High-resolution ionosphere corrections for single-frequency positioning 

      Goss, Andreas; Hernández Pajares, Manuel; Schmidt, Michael; Roma Dollase, David; Erdogan, Eren; Seitz, Florian (Multidisciplinary Digital Publishing Institute (MDPI), 2021-01-01)
      Article
      Open Access
      The ionosphere is one of the main error sources in positioning and navigation; thus, information about the ionosphere is mandatory for precise modern Global Navigation Satellite System (GNSS) applications. The International ...

    • IGS real-time service for global ionospheric total electron content modeling 

      Li, Zishen; Wang, Ningbo; Hernández Pajares, Manuel; Yuan, Yunbin; Krankowski, Andrzej; Liu, Ang; Zha, Jiuping; García Rigo, Alberto; Roma Dollase, David; Yang, Heng (2020-02-18)
      Article
      Restricted access - publisher's policy
      Benefiting from global multi-frequency and multi-constellation GNSS measurements provided by the experimental International GNSS real-time service (IGS RTS), a predicting-plus-modeling approach employed by Chinese Academy ...

    • MEMS miniaturized low-noise magnetic field sensor for the observation of sub-millihertz magnetic fluctuations in space exploration 

      Manyosa i Vilardell, Xavier; Roma Dollase, David; Arqué, M.; Bonastre Majoral, Biel; Jiménez Serres, Vicente; Ramos Castro, Juan José; Pons Nin, Joan; Martín Hernández, Víctor; Salvans Tort, Josep; Gómez Fernández, Sergio; Domínguez Pumar, Manuel (Elsevier, 2024-05-15)
      Article
      Open Access
      The objective of this paper is to show that, using magnetic field modulation with a MEMS resonator, it is possible to reduce the noise floor of a commercial Tunneling Magnetic Resistance by one order of magnitude, in the ...

    • Methodology and consistency of slant and vertical assessments for ionospheric electron content models 

      Hernández Pajares, Manuel; Roma Dollase, David; Krankowski, Andrzej; García Rigo, Alberto; Orús Pérez, Raul (2017-12)
      Article
      Open Access
      A summary of the main concepts on global ionospheric map(s) [hereinafter GIM(s)] of vertical total electron content (VTEC), with special emphasis on their assessment, is presented in this paper. It is based on the experience ...

    • Precise ionospheric electron content monitoring from single- frequency GPS receivers 

      Hernández Pajares, Manuel; Roma Dollase, David; García Fernández, Miquel; Orús Pérez, Raul; García Rigo, Alberto (2018-10-01)
      Article
      Open Access
      The number of existing global positioning system (GPS) single-frequency receivers continues growing. More than 90% of GPS receivers are implemented as low-cost single-frequency chipsets embedded in smartphones. This provides ...

    • Real time global ionospheric maps: a low latency alternative to traditional GIMs 

      Roma Dollase, David; Hernández Pajares, Manuel; García Rigo, Alberto; Laurichesse, Denis; Schmidt, Michael; Erdogan, Eren; Yuan, Yunbin; Li, Zishen; Gómez-Cama, José Ma.; Krankowski, Andrzej (2016)
      Conference lecture
      Restricted access - publisher's policy
      Since the late nineties different entities have been generating and distributing Global Ionospheric Maps (GIMs). In this time, multiple new application have arisen from the determination of electron content distribution ...

    • Real-time global ionospheric modelling from GNSS data with RT-TOMION model 

      Roma Dollase, David; López Cama, José María; Hernández Pajares, Manuel; García Rigo, Alberto (European Space Agency (ESA), 2015)
      Conference lecture
      Restricted access - publisher's policy
      As it is well known, the ionosphere, the region of the atmosphere between 50 and 1000 km height approximately containing the most part of its free electrons, has an important effect on Global Navigation Satellite System ...

    • Real-time interpolation of global ionospheric maps by means of sparse representation 

      Yang, Heng; Monte Moreno, Enrique; Hernández Pajares, Manuel; Roma Dollase, David (2021-06-12)
      Article
      Open Access
      In this paper, we propose a method for the generation of real-time global ionospheric map (RT-GIM) of vertical total electron content (VTEC) from GNSS measurements. The need for interpolation arises from the fact that the ...

    • Resistive-based micro-kelvin temperature resolution for ultra-stable space experiments 

      Roma Dollase, David; Gualani, Vivek; Gohlke, Martin; Abich, Klaus; Morales Krueger, Jordan; Gonzalvez Rubio, Alba; Martín Hernández, Víctor; Ramos Castro, Juan José; Sanjuán Muñoz, Josep; Nofrarias Serra, Miquel (2022-12-23)
      Article
      Open Access
      High precision temperature measurements are a transversal need in a wide area of physical experiments. Space-borne gravitational wave detectors are a particularly challenging case, requiring both high precision and high ...

    • 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 ...

    • The cooperative IGS RT-GIMs: a reliable estimation of the global ionospheric electron content distribution in real time 

      Liu, Qi; Hernández Pajares, Manuel; Yang, Heng; Monte Moreno, Enrique; Roma Dollase, David; García Rigo, Alberto; Li, Zishen; Wang, Ningbo; Laurichesse, Denis; Zhao, Q.; Wübbena, Gerhard; Krankowski, Andrzej; Ghoddousi Fard, Reza; Blot, Alexis; Zhang, Qiang (2021-09-23)
      Article
      Open Access
      The Real-Time Working Group (RTWG) of the International GNSS Service (IGS) is dedicated to providing high-quality data and high-accuracy products for Global Navigation Satellite System (GNSS) positioning, navigation, ...

    • Towards cooperative global mapping of the ionosphere: fusion feasibility for igs and iri with global climate vtec maps 

      Fron, Adam; Krankowski, Andrzej; Galkin, Ivan; Bilitza, D.; Hernández Pajares, Manuel; Reinisch, Bodo W.; Li, Zishen; Kotulak, Kacper; Zakharenkova, I.; Cherniak, Iurii; Roma Dollase, David; Wang, Ningbo; Flisek, Pawel; García Rigo, Alberto (Multidisciplinary Digital Publishing Institute (MDPI), 2020-11-01)
      Article
      Open Access
      Recommendations of the International Reference Ionosphere (IRI) Workshop 2017 in Taoyuan City, Taiwan and International GNSS Service (IGS) Workshop 2018 in Wuhan, China included establishment of an ionosphere mapping service ...