Now showing items 1-5 of 5

    • Contributions to ionospheric modeling with GNSS in mapping function, tomography and polar electron 

      Lyu, Haixia (Universitat Politècnica de Catalunya, 2020-11-17)
      Doctoral thesis
      Open Access
      This dissertation focuses on determining the vertical electron content distribution in low and high vertical resolution from ground-based and LEO on board GNSS data and improving the knowledge of ionosphere climatology in ...
    • Electron density retrieval from truncated Radio Occultation GNSS data 

      Lyu, Haixia; Hernández Pajares, Manuel; Monte Moreno, Enrique; Cardellach Galí, Estel (2019-06-01)
      Article
      Open Access
      This paper summarizes the definition and validation of two complementary new strategies, to invert incomplete Global Navigation Satellite System Radio-Occultation (RO) ionospheric measurements, such as the ones to be ...
    • Estimation of polar depletion regions by VTEC contrast and watershed enhancing 

      Monte Moreno, Enrique; Hernández Pajares, Manuel; Lyu, Haixia; Yang, Heng; Aragon-Angel, Angela (Institute of Electrical and Electronics Engineers (IEEE), 2021)
      Article
      Open Access
      This article presents a method for determining near-Pole ionization depletion regions and troughs from global navigation satellite system (GNSS) vertical total electron content (VTEC) maps. To define the regions, we use ...
    • Polar electron content from GPS data-based global ionospheric maps: assessment, case studies, and climatology 

      Lyu, Haixia; Hernández Pajares, Manuel; Aragón Ángel, Maria Angeles; Monte Moreno, Enrique; An, Jiachun; Liu, Jingbin (2020-04-22)
      Article
      Open Access
      The electron content distribution of the north and south polar ionosphere from 2001 to the beginning of 2019 is analyzed by using the UQRG global ionospheric map (GIM) of vertical total electron content (VTEC), computed ...
    • The Barcelona ionospheric mapping function (BIMF) and its application to northern mid-latitudes 

      Lyu, Haixia; Hernández Pajares, Manuel; Nohutcu, Metin; García Rigo, Alberto; Zhang, Zhongzhi; Liu, Jingnan (2018-04-26)
      Article
      Open Access
      A simple way of improving the Global Navigation Satellite Systems (GNSS) slant ionospheric correction from Vertical Total Electron Content (VTEC) models is presented. In many GNSS applications, a mapping function is required ...