Enviaments recents

  • The self organizing map of neighbour stars and its kinematical interpretation 

    Hernández Pajares, Manuel; Cubarsí Morera, Rafael; Monte Moreno, Enrique (1993-02)
    Article
    Accés obert
    The Self-Organizing Map (SOM) is a neural network algorithm that has the special property ofcreating spatially organized tepresetüatioes of various features of input signals. The resulting maps resemble realneural structures ...
  • Fast precise point positioning: a system to provide corrections for single and multi-frequency navigation 

    Rovira Garcia, Adrià; Juan Zornoza, José Miguel; Sanz Subirana, Jaume; González Casado, Guillermo; Bertran Albertí, Eduardo (2016-09)
    Article
    Accés obert
    Fast Precise Point Positioning (Fast-PPP) provides Global Navigation Satellite System corrections in real-time. Satellite orbits and clock corrections are shown to be accurate to a few centimeters and a few tenths of a ...
  • Accuracy of ionospheric models used in GNSS and SBAS: methodology and analysis 

    Rovira Garcia, Adrià; Juan Zornoza, José Miguel; Sanz Subirana, Jaume; González Casado, Guillermo; Ibáñez Segura, Deimos (2016-03-01)
    Article
    Accés restringit per acord de confidencialitat
    © 2015, Springer-Verlag Berlin Heidelberg. The characterization of the accuracy of ionospheric models currently used in global navigation satellite systems (GNSSs) is a long-standing issue. The characterization remains a ...
  • Bottom-Up instructive quality control in the biofabrication of smart protein materials 

    Rueda, Fabian; Cespedes, Maria Virtudes; Cochinillo, Oscar; Sanchez Chardi, Alejandro; Seras Franzoso, Joaquin; Cubarsí Morera, Rafael; Gallardo, Alberto; Pesarrodona, Mireia; Ferrer Miralles, Neus; Daura, Xavier; Vazquez Gómez, Esther; García Fruitós, Elena; Mangues, Ramón; Unzueta, Ugutz; Villaverde, A. (2015-10)
    Article
    Accés restringit per política de l'editorial
  • Ionospheric and plasmaspheric electron contents inferred from radio occultations and global ionospheric maps 

    González Casado, Guillermo; Juan Zornoza, José Miguel; Sanz Subirana, Jaume; Rovira Garcia, Adrià; Aragón Angel, Angela (2015-07-04)
    Article
    Accés obert
    We introduce a methodology to extract the separate contributions of the ionosphere and the plasmasphere to the vertical total electron content, without relying on a fixed altitude to perform that separation. The method ...
  • Conditions of consistency for multicomponent stellar systems. II. Is a point-axial symmetric model suitable for the Galaxy? 

    Cubarsí Morera, Rafael (2014-05-27)
    Article
    Accés obert
    Under a common potential, a finite mixture of ellipsoidal velocity distributions satisfying the Boltzmann collisionless equation provides a set of integrability conditions that may constrain the population kinematics. ...
  • Conditions of consistency for multicomponent axisymmetric stellar systems. Is an axisymmetric model suitable yet? 

    Cubarsí Morera, Rafael (2013-12-17)
    Article
    Accés obert
    Solving the Boltzmann collisionless equatio n under the axisymmetric hypot hesis introduces serious lim itations on describing the kinematics of a single stellar system according to the local Galactic observables. Instead ...
  • A Worldwide ionospheric model for fast precise point positioning 

    Rovira Garcia, Adrià; Juan Zornoza, José Miguel; Sanz Subirana, Jaume; González Casado, Guillermo (Institute of Electrical and Electronics Engineers (IEEE), 2015-03-03)
    Article
    Accés obert
    Fast precise point positioning (Fast-PPP) is a satellite-based navigation technique using an accurate real-time ionospheric modeling to achieve high accuracy quickly. In this paper, an end-to-end performance assessment of ...
  • The epicycle model 

    Cubarsí Morera, Rafael (2013-06)
    Article
    Accés obert
    Las soluciones de las ecuaciones del movimiento para una part cula de masa puntual bajo un campo de fuerzas conservativo estan generalmente ligadas a un conjunto b asico de integrales del movimiento, que dependen del ...
  • Enhanced precise point positioning for GNSS users 

    Juan Zornoza, José Miguel; Hernández Pajares, Manuel; Sanz Subirana, Jaume; Ramos Bosch, Pedro; Aragón Ángel, María Ángeles; Orus, R.; Ochieng, W.; Feng, S; Jofre, Martí; Coutinho, P; Samson, Jaron; Tossaint, Michel Mathias Maria (Institute of Electrical and Electronics Engineers (IEEE), 2012-09-21)
    Article
    Accés restringit per política de l'editorial
    This paper summarizes the main results obtained during the development of an Enhanced Precise Point Positioning (EPPP) Global Navigation Satellite Systems multifrequency user algorithm. The main innovations include the ...

Mostra'n més