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    • Laboratory experiments of polarimetric radar interferometry: DEM generation and vegetation height estimation 

      Fortuny Guasch, Joaquim; Fabregas Canovas, Francisco Javier; Broquetas Ibars, Antoni (Institute of Electrical and Electronics Engineers (IEEE), 1999)
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      A coherence optimization method, which makes use of polarimetry to enhance the quality of the interferograms, has been experimentally tested under laboratory conditions in an anechoic chamber. The experiments have proved ...

    • Linear and nonlinear terrain deformation maps from a reduced set of interferometric SAR images 

      Mora Sacristan, Óscar; Mallorquí Franquet, Jordi Joan; Broquetas Ibars, Antoni (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2003-10-31)
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      In this paper, an advanced technique for the generation of deformation maps using synthetic aperture radar (SAR) data is presented. The algorithm estimates the linear and nonlinear components of the displacement, the error ...

    • Measurement of the electromagnetic field backscattered by a fractal surface for the verification of electromagnetic scattering models 

      Ruello, Giuseppe; Blanco Sánchez, Pablo; Iodice, Antonio; Mallorquí Franquet, Jordi Joan; Riccio, Daniele; Broquetas Ibars, Antoni; Franceschetti, Girogio (IEEE Press. Institute of Electrical and Electronics Engineers, 2010-04)
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      Fractal geometry is widely accepted as an efficient theory for the characterization of natural surfaces; the opportunity of describing irregularity of natural surfaces in terms of few fractal parameters makes its use in ...

    • Medical imaging with a microwave tomographic scanner 

      Jofre Roca, Lluís; Hawley, M S; Broquetas Ibars, Antoni; Reyes Davó, Elías de Los; Ferrando Bataller, Miquel; Elias Fusté, Antoni (1990-03)
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    • Medida de RCS con onda esférica en campo próximo 

      Palau, J.; Broquetas Ibars, Antoni; Jofre Roca, Lluís; Cardama Aznar, Ángel (Universidad de Málaga, 1992)
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    • Medida de sección recta radar con onda esférica en campo próximo 

      Broquetas Ibars, Antoni; Jofre Roca, Lluís; Cardama Aznar, Ángel (1992)
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      The paper presents a new Inverse Synthetic Aperture Radar (ISAR) algorithm intended for Radar Cross Section (RCS) measurement from scattering fields. The method is based on a spherical wave near-field illumination of the ...

    • Métodos híbridos para análisis de la difracción y sección recta radar de cuerpos metálicos complejos 

      Rius Casals, Juan Manuel; Ferrando Bataller, Miquel; Broquetas Ibars, Antoni; Jofre Roca, Lluís (Unión Científica Internacional de Radio (URSI), 1989)
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      A set of algorithms and procedures to compute radar cross section (RCS) of aircraft are presented. The aircraft will be defined by a solid modelling data base. The hardware capabilities of a 3-D graphics accelerator will ...

    • Micrometric deformation imaging at W-Band 

      Abril, Jordi; Nova, Enrique; Broquetas Ibars, Antoni; Aguasca Solé, Alberto; Romeu Robert, Jordi; Jofre Roca, Lluís (IEEE, 2011)
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      The measurement of scattered signals at W Band can be exploited to form images of small deformations with precisions in the order of tenths of micrometers. In this paper an Interferometric Synthetic Aperture Radar setup ...

    • Micrometric deformation imaging at W-Band with GBSAR 

      Martínez, Arturo; Aguasca Solé, Alberto; Lort Cuenca, Marc; Broquetas Ibars, Antoni (2017-02-17)
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      The paper presents the experimental evaluation of 94 GHz CW-FM Radar that can be configured as a Ground Based SAR (Synthetic Aperture Radar) for high resolution imaging and deformation control. This system has been designed ...

    • Microwave Imaging of Multilayer Cylinders Using Optimization Techniques 

      Ferrando Bataller, Miquel; Broquetas Ibars, Antoni; Jofre Roca, Lluís; Rius Casals, Juan Manuel (Institute of Electrical and Electronics Engineers (IEEE), 1989)
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      The authors present a novel approach to solving the problem of the reconstruction of arbitrary strong-scattering objects using optimization techniques. The algorithm is based on the minimization of the mean-squared error ...

    • Microwave imaging of tissue blood content changes 

      Hawley, Mark; Broquetas Ibars, Antoni; Jofre Roca, Lluís; Bolomey, Jean Charles; Gaboriaud, Guillaume (1991-05)
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      Accés restringit per política de l'editorial
      Active microwave imaging gives information on the dielectric properties of of the body, allowing the collection of data that are distinct from, but complementary to, those available from other imaging methods based on ...

    • Microwave imaging techniques for biomedical applications 

      Joisel, A; Mallorquí Franquet, Jordi Joan; Broquetas Ibars, Antoni; Geffrin, J M; Joachimowicz, N; Vall·Llossera, M; Vall-Llossera Ferran, Mercedes Magdalena; Jofre Roca, Lluís; Bolomey, Jean Charles (Vincenzo Piuri and Mario Savino, 1999)
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      Microwaves have been considered for medical applications involving the detection of organ movements and changes in tissue water content. More particularly cardiopulmonary interrogation via microwaves has resulted in various ...

    • Microwave Tomography. Clinical application 

      Broquetas Ibars, Antoni; Jofre Roca, Lluís; de los Reyes, Elías (Universidad Politécnica de Madrid (UPM), 1988)
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      The clinical applications of a microwave tomographic system are studied. Imaging parameters are appropriate for medical use : a spatial resolution of 7mm anda contrast resolution of 1% for a measurement time of 3 seconds. ...

    • Microwave tomography: an algorithm for cylindrical geometries 

      Rius Casals, Juan Manuel; Ferrando Bataller, Miquel; Jofre Roca, Lluís; Reyes, E De Los; Elias Fusté, Antoni; Broquetas Ibars, Antoni (Institution of Electrical Engineers, 1987-05)
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      The letter presents an efficient algorithm in cylindrical coordinates for microwave diffraction tomography. In comparison with algorithms in cartesian co-ordinates, the mechanical rotation of the object is avoided and ...

    • Modelado temporal de ruido de fase en osciladores y estudio de su impacto en sistemas de teledetección a frecuencias de microondas 

      de Porrata, Ramir; Broquetas Ibars, Antoni; Torres Torres, Francisco (1994)
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      Phase noise is nowadays one of the most challenging limitations on radar systems sensitivity and its effects are specially important in remote sensing systems such as scatterometers and synthetic aperture radars. However, ...

    • Modeling fast boat motion impact on satellite SAR MTI systems 

      Ceba Vega, Francisco; Makhoul Varona, Eduardo; Broquetas Ibars, Antoni; Zhan, Yu; Beaton, Alasdhair (2015-10-01)
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      This letter analyzes the problems of imaging small and fast boats with synthetic aperture radar (SAR), which may experience severe defocusing and/or smearing. This situation is encountered, inter alia, in ocean traffic ...

    • Navigation systems requirements for airborne interferometric SAR platforms 

      Bara, M; Monné, J; Broquetas Ibars, Antoni (Institute of Electrical and Electronics Engineers (IEEE), 1999)
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      It is well known that by means of airborne interferometric SAR systems it is possible to generate high precision digital elevation models (DEM), although these platforms are seriously affected by motion instabilities. These ...

    • Nearly zero inclination geosynchronous SAR mission analysis with long integration time for earth observation 

      Ruiz Rodon, Josep; Broquetas Ibars, Antoni; Makhoul Varona, Eduardo; Monti Guarnieri, Andrea; Rocca, Fabio (Institute of Electrical and Electronics Engineers (IEEE), 2014-10-01)
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      Accés restringit per política de l'editorial
      In this paper, the performance of a nearly zero inclination and low eccentricity geosynchronous synthetic aperture radar (GEOSAR) mission for midlatitude (30 degrees-60 degrees) Earth observation is analyzed. The slow ...

    • New graphical processing technique for fast shadowing computation in PO surface integral 

      Rius Casals, Juan Manuel; Carbó Meseguer, Alexis; Bjerkemo, Jakob; Úbeda Farré, Eduard; Heldring, Alexander; Mallorquí Franquet, Jordi Joan; Broquetas Ibars, Antoni (2014-05-01)
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      Accés restringit per política de l'editorial
      This paper presents a new graphical processing technique for fast computation of PO surface integral. In contrast with the original graphical processing approach introduced by the authors in 1993, the new one combines a ...

    • Non-invasive active thermometry with a microwave tomographic scanner in hyperthermia treatments in hyperthermia treatments 

      Mallorquí Franquet, Jordi Joan; Broquetas Ibars, Antoni; Jofre Roca, Lluís; Cardama Aznar, Ángel (1992-10)
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      In this work the active microwave tomographic imaging of tissue temperature changes induced in deep hyperthermia treatments is studied. The thermal images would allow to monitor and optimize the treatment, increasing its ...