Exploració per tema "Imaging systems in geophysics"

Ara es mostren els items 1-10 de 10

    • 3D magnetotelluric modeling using high-order tetrahedral Nédélec elements on massively parallel computing platforms 

      Castillo Reyes, Octavio; Modesto Galende, David; Queralt Capdevila, Pilar; Marcuello Pascual, Alex; Ledo Fernández, Juan José; Amor Martín, Adrián; de la Puente, Josep; García-Castillo, Luis Emilio (2022-03)
      Article
      Accés obert
      We present a routine for 3D magnetotelluric (MT) modeling based upon high-order edge finite element method (HEFEM), tailored and unstructured tetrahedral meshes, and high-performance computing (HPC). This imple- mentation ...

    • Advanced processing of multiplatform remote sensing imagery for the monitoring of coastal and mountain ecosystems 

      Marcello Ruiz, Javier; Eugenio González, Francisco; Gonzalo Martín, Consuelo; Rodríguez Esparragón, Dionisio; Marqués Acosta, Fernando (Institute of Electrical and Electronics Engineers (IEEE), 2021)
      Article
      Accés obert
      Coastal areas are key to sustaining biodiversity, but their complexity and variability makes their analysis challenging. On the other hand, mountain ecosystems include a large percentage of the global biodiversity and their ...

    • Analysis of ASAR/Envisat polarimetric backscattering characteristics of Doñana National Park wetlands 

      Martí Cardona, Belén; López Martínez, Carlos; Dolz Ripollès, Josep (IEEE Press. Institute of Electrical and Electronics Engineers, 2009)
      Text en actes de congrés
      Accés obert
      Doñana National Park wetlands, in southwest Spain, undergo yearly cycles of inundation and drying out. These cycles, together with great extensions of annual helophytes, make of Doñana a rapidly changing environment. 43 ...

    • Crop classification of multitemporal PolSAR based on 3-D attention module with ViT 

      Yin, Qiang; Lin, Zhiyuan; Hu, Wei; López Martínez, Carlos; Ni, Jun; Zhang, Fan (Institute of Electrical and Electronics Engineers (IEEE), 2023-04-26)
      Article
      Accés obert
      Multitemporal polarimertic SAR is considered to be very effective in crop classification and cultivated land detection, which has received much attention from researchers. Currently, for most multitemporal polarimetric SAR ...

    • Hierarchical segmentation of vegetation areas in high spatial resolution images by fusion of multispectral information 

      Calderero Patino, Felipe; Marqués Acosta, Fernando; Marcello, Javier; Eugenio, Francisco Javier (2009)
      Text en actes de congrés
      Accés obert
      A new region-based methodology for the automated extraction and hierarchical segmentation of vegetation areas into high spatial resolution images is proposed. This approach is based on the iterative and cooperative ...

    • Meshing strategies for 3d geo-electromagnetic modeling in the presence of metallic infrastructure 

      Castillo Reyes, Octavio; Rulff, Paula; Schankee Um, Evan; Amor Martín, Adrián (2023)
      Article
      Accés obert
      In 3D geo-electromagnetic modeling, an adequate discretisation of the modeling domain is crucial to obtain accurate forward responses and reliable inversion results while reducing the computational cost. This paper ...

    • On the potential of empirical mode decomposition for RFI mitigation in microwave radiometry 

      Díez García, Raúl; Camps Carmona, Adriano José; Hyuk, Park (Institute of Electrical and Electronics Engineers (IEEE), 2022-07-04)
      Article
      Accés obert
      Radio-frequency interference (RFI) is an increasing problem particularly for Earth observation using microwave radiometry. RFI has been observed, for example, at L-band by the European Space Agency’s (ESA’s) soil moisture ...

    • Orbit design for a satellite swarm-based Motion Induced Synthetic Aperture Radiometer (MISAR) in low-earth orbit for earth observation applications 

      Lützner, Mark; Jagdhuber, Thomas; Camps Carmona, Adriano José; Hyuk, Park; Peichl, Markus; Förstner, Roger; Jirousek, Matthias (Institute of Electrical and Electronics Engineers (IEEE), 2022)
      Article
      Accés obert
      Soil Moisture and Ocean Salinity mapping by Earth observation satellites has contributed significantly toward a better understanding of the Earth system, such as its hydrosphere or climate. Nevertheless, an increased spatial ...

    • Polarimetric SAR time series change analysis over agricultural areas 

      Alonso González, Alberto; López Martínez, Carlos; Papathanassiou, Kostantinos; Hajnsek, Irena (Institute of Electrical and Electronics Engineers (IEEE), 2020-10)
      Article
      Accés obert
      This article proposes a change detection and analysis technique for monitoring the phenological development of agricultural vegetation by means of multitemporal Polarimetric Synthetic Aperture Radar (PolSAR) acquisitions. ...

    • SMOS simplified iterative full-pol brightness temperature retrieval 

      Durán Martínez, Israel; Lin, Wu; Torres Torres, Francisco; Corbella Sanahuja, Ignasi; Duffo Ubeda, Núria; Martín Neira, Manuel (Institute of Electrical and Electronics Engineers (IEEE), 2016)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      SMOS is the acronym for the Soil Moisture and Ocean Salinity mission by the European Space Agency (ESA) [1]. Its single payload, the Microwave Imaging Radiometer using Aperture Synthesis (MIRAS), was successfully launched ...