Enviaments recents

  • Modified oriented dihedral model for scattering characteristic description with PolSAR data 

    Chen, Yifan; Zhang, Lamei; Mallorquí Franquet, Jordi Joan; Zou, Bin (Institute of Electrical and Electronics Engineers (IEEE), 2024-01-19)
    Article
    Accés obert
    Dihedral is a common structure in polarimetric SAR images and can be found on many man-made targets. Many researchers have proposed different dihedral models, but the accuracy of these models is limited. In this case, the ...
  • The role of network digital twinning in a 6G-oriented optimization-as-a-service platform 

    Martínez Caro, José Manuel; Pérez Romero, Jordi; Agüero Calvo, Ramón; Muñiz, Alejandro; Atxutegi, Eneko; Díez, Luis; Contreras, Luis Miguel; González, Ivan; Moreno-Muro, Francisco Javier; Pavón-Marino, Pablo; Sallent Roig, Oriol (Luis Landesa-Porras, 2023)
    Comunicació de congrés
    Accés obert
    The advent of 5G has meant providing users with higher data rates, more connected devices and lower latency, implying the need to redefine traditional network management methods. In addition, 6G is expected to provide much ...
  • Simple randomized strategies for low-rank matrix compression 

    López Menchón, Héctor; Molina Burgués, Robert; Heldring, Alexander; Úbeda Farré, Eduard; Rius Casals, Juan Manuel (Universidad de Sevilla, 2023)
    Text en actes de congrés
    Accés obert
    We propose a randomized Pseudo Skeleton (or CUR) approximation method to compress the H-matrices of linear systems that arise in the discretization of integral equations in electromagnetic scattering. This method is ...
  • Improvements in randomized matrix compression methods for numerical analysis of antennas and scatterers 

    López Menchón, Héctor; Heldring, Alexander; Úbeda Farré, Eduard; Rius Casals, Juan Manuel (Luis Landesa-Porras, 2023)
    Comunicació de congrés
    Accés obert
    We propose a randomized Pseudo Skeleton (or CUR) Approximation method to compress the H-matrices of linear systems that arise in the discretization of integral equations in electromagnetic scattering. This method is highly ...
  • On the design of a network digital twin for the radio access network in 5G and beyond 

    Vilà Muñoz, Irene; Sallent Roig, Oriol; Pérez Romero, Jordi (Multidisciplinary Digital Publishing Institute (MDPI), 2023-01-20)
    Article
    Accés obert
    A Network Digital Twin (NDT) is a high-fidelity digital mirror of a real network. Given the increasing complexity of 5G and beyond networks, the use of an NDT becomes useful as a platform for testing configurations and ...
  • IA generativa i ChatGPT. Impacte en l’aprenentatge universitari 

    Nadeu Camprubí, Climent (2024)
    Report de recerca
    Accés obert
    Es presenten de forma planera els elements bàsics de la intel·ligència artificial (IA) generativa. Sobretot es descriuen els models de llenguatge de gran capacitat, que són la base d’eines com el xatbot ChatGPT. A continuació ...
  • An assessment of SAOCOM L-Band PolInSAR capabilities for canopy height estimation: A case study over managed forests in Argentina 

    Seppi, Santiago Ariel; López Martínez, Carlos; Joseau, Marisa Jacqueline (Institute of Electrical and Electronics Engineers (IEEE), 2024-02-07)
    Article
    Accés obert
    This work presents the first results of canopy height mapping with L -Band SAOCOM data by means of Polarimetric SAR Interferometry (PolInSAR). For this study case, a colocated temporal series of SAOCOM fully polarimetric ...
  • Wavefront-modified vector beams for THz cornea spectroscopy 

    Lamberg, Joel; Zarrinkhat, Faezeh; Tamminen, Aleksi; Baggio, Mariangela; Ala-Laurinaho, Juha; Rius Casals, Juan Manuel; Romeu Robert, Jordi; Khaled, Elsayed E. M.; Taylor, Zachary (Optical Society of American (OSA), 2023-11-20)
    Article
    Accés obert
    Terahertz spectroscopy is a promising method to diagnose ocular diseases, where the cornea is typically imaged by Gaussian beams. However, the beam’s mismatch with the cornea’s spherical surface produces a 5-10 % error in ...
  • Curved boundary integral method for electromagnetic fields 

    Lamberg, Joel; Zarrinkhat, Faezeh; Tamminen, Aleksi; Ala-Laurinaho, Juha; Rius Casals, Juan Manuel; Romeu Robert, Jordi; Khaled, Elsayed; Taylor, Zachary (Optical Society of American (OSA), 2023-12-11)
    Article
    Accés obert
    The angular spectrum method is a rigorous method to synthesize near and far-field electromagnetic beams from planar field distributions. However, this limitation of planar surfaces has restricted its applicability to beams ...
  • Quality control of Doppler spectra from a vertically pointing, S-band profiling radar 

    Belak, Susan L.; Tanamachi, Robin; Asel, Matthew L.; Dennany, Grant; Gnanasambandam, Abhiram; Frasier, Steve; Rocadenbosch Burillo, Francisco (American Meteorological Society, 2024-02-21)
    Article
    Accés restringit per política de l'editorial
    This study describes a novel combination of methods to remove spurious spectral peaks, or “spurs,” from Doppler spectra produced by a vertically pointing, S-band radar. The University of Massachusetts S-band frequency-modulated, ...
  • Land, jet stream, and other atmospheric effects on burned area estimation during the South Asian heatwave of 2022 

    Irawan, Amir Mustofa; Vall-Llossera Ferran, Mercedes Magdalena; López Martínez, Carlos; Camps Carmona, Adriano José; Chaparro Danon, David; Portal González, Gerard; Pablos Hernández, Miriam; Alonso González, Alberto (2024-04)
    Article
    Accés obert
    Understanding the key variables that characterise fire propagation is important for a better estimation of fire events and their impacts. This study uses machine learning combined with satellite remote sensing and atmospheric ...
  • Correlation study between the performance in different engineering courses and project-based courses 

    Bermejo Broto, Sandra; Bragós Bardia, Ramon; Rey Micolau, Francesc; Pegueroles Vallés, Josep R. (NTNU SEED, 2023)
    Comunicació de congrés
    Accés obert
    In a previous study, already published (Bragós, 2022), we analyzed the correlation between the University access mark to the engineering studies with the grades obtained in projectbased courses and in non-project-based ...

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