Browsing by Author "Onrubia Ibáñez, Raul"

Now showing items 1-5 of 5

    • A pre-correlation RFI mitigation algorithm for L-band interferometric radiometers 

      Querol Borràs, Jorge; Camps Carmona, Adriano José; Pérez Portero, Adrián; Oliva, Roger; Onrubia Ibáñez, Raul; Ramirez Martinez, Juan Ignacio; Zurita Campos, Alberto M.; Suess, Martin; Martín Neira, Manuel (Institute of Electrical and Electronics Engineers (IEEE), 2021)
      Conference report
      Open Access
      Radio Frequency Interference (RFI) is a major concern for both real and synthetic aperture radiometers. After the lessons learnt from SMOS, ESA is preparing the next generation of L-band interferometric radiometers with ...

    • Improved gnss-r altimetry methods: Theory and experimental demonstration using airborne dual frequency data from the microwave interferometric reflectometer (mir) 

      Cervelló i Nogués, Oriol; Muñoz Martín, Joan Francesc; Hyuk, Park; Camps, Adriano; Onrubia Ibáñez, Raul; Pascual Biosca, Daniel; Rudiger, Christoph; Walker, Jeffrey; Monerris Belda, Alessandra (Multidisciplinary Digital Publishing Institute (MDPI), 2021-10-01)
      Article
      Open Access
      Altimetric performance of Global Navigation Satellite System - Reflectometry (GNSS-R) instruments depends on receiver’s bandwidth and signal-to-noise ratio (SNR). The altimetric delay is usually computed from the time ...

    • RFI detection and mitigation for advanced correlators in interferometric radiometers 

      Pérez Portero, Adrián; Querol Borràs, Jorge; Camps Carmona, Adriano José; Martín Neira, Manuel; Suess, Martin; Ramirez, Juan Ignacio; Zurita Campos, Alberto M.; Closa Soteras, Josep; Oliva, Roger; Onrubia Ibáñez, Raul (Multidisciplinary Digital Publishing Institute (MDPI), 2022-09-01)
      Article
      Open Access
      This work presents the first RFI detection and mitigation algorithm for the interferometric radiometers that will be implemented in its correlator unit. The algorithm operates in the time and frequency domains, applying ...

    • SMOS instrument performance after more than 11 years in orbit 

      Martín Neira, Manuel; Oliva, Roger; Onrubia Ibáñez, Raul; Corbella Sanahuja, Ignasi; Duffo Ubeda, Núria; Rubino, Roselena; Kainulainen, Juha; Closa Soteras, Josep; Zurita Campos, Alberto M.; del Castillo, Javier (Institute of Electrical and Electronics Engineers (IEEE), 2021)
      Conference report
      Open Access
      ESA's Soil Moisture and Ocean Salinity (SMOS) mission [1] has been in orbit for over 11 years, and its Microwave Imaging Radiometer with Aperture Synthesis (MIRAS) in two dimensions keeps being fully operational. This ...

    • Untangling the GNSS-R coherent and incoherent components: Experimental evidences over the ocean 

      Muñoz Martin, Joan Francesc; Onrubia Ibáñez, Raul; Pascual Biosca, Daniel; Hyuk, Park; Camps Carmona, Adriano José; Rudiger, Christoph; Walker, Jeffrey; Monerris Belda, Alessandra (2020)
      Conference report
      Open Access
      Global Navigation Satellite Systems Reflected (GNSS-R) signals exhibit an incoherent and a coherent components [1], [2]. Current models assume that one or the other are dominant, and the calibration, and geophysical parameter ...