Exploració per tema "Àrees temàtiques de la UPC::Física::Astronomia i astrofísica::Radioastronomia"

Ara es mostren els items 1-7 de 7

    • A linear scale height Chapman model supported by GNSS occultation measurements 

      Olivares Pulido, Germán; Hernández Pajares, Manuel; Aragón Ángel, Maria Angeles; García Rigo, Alberto (2016-05)
      Comunicació de congrés
      Accés obert
      Global Navigation Satellite Systems (GNSS) radio occultations allow the vertical sounding of the Earth's atmosphere, in particular, the ionosphere. The physical observables estimated with this technique permit to test ...

    • Assessment of the F2-layer electron density peak inferred from Formosat-3/COSMIC radio occultations over half a Solar Cycle 

      Aragon-Angel, Angela; Limberger, Marco; Hernández Pajares, Manuel; Altadill, David; Dettmering, Denise (2016)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      GNSS radio occultation (RO) measurements have become crucial to provide valuable information on the vertical electron density structure of the Ionosphere. Ionospheric key parameters such as the maximum electron density ...

    • Beacon Satellite Symposium: Session 5B - June 30th 2016: Radio occultation techniques and measurements 

      Aragón Ángel, María Ángeles (2016-11-16)
      Report de recerca
      Accés obert
      During the Beacon Satellite Symposium, held in Trieste, Italy, between June 26 and July 1 2016, the JRC chaired the session 5B: Radio Occultation Techniques and Measurements. The corresponding abstract of the session is ...

    • Determination of the along-orbit average density of the thermospere 

      Martínez Calzado, Adrián (Universitat Politècnica de Catalunya, 2020-09-14)
      Treball Final de Grau
      Accés obert
      Nowadays, the study of the dynamics of the upper atmosphere has become a must in order to study satellite trajectories at low orbit with accuracy. The region we are interested in this project is the lower part of the ...

    • 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 ...

    • Particle injection in the LSI+61º303 radio outbursts 

      Paredes, J. M.; Marti, J; Estalella Boadella, Robert; Sarrate Ramos, Josep (1991)
      Article
      Accés obert
      The binary radio, X-ray and gamma-ray star LSI+ 61 °303 presents periodic radio outbursts, of variable amplitude, with a period of 26.5 d. We propose a description of the radio outbursts using the adiabatic expansion model ...

    • SIXE: A Payload for MINISAT-02 

      Gómez, J.; Isern Vilaboy, Jordi; Bravo Guil, Eduardo; Giovannelli, F.; Padula, C.L. (1998-01)
      Article
      Accés restringit per política de l'editorial
      A description of the X-ray instrument SIXE proposed for the MINISAT-02 mission is presented. The description includes the scientific goals and instrument performances.