Browsing by Author "Broquetas Ibars, Antoni"
Now showing items 1-20 of 178
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A cylindrical array for fast microwave tomography
(Unión Científica Internacional de Radio (URSI), 1987)
Conference report
Open Access -
A fully-focused SAR omega-K closed-form algorithm for the Sentinel-6 radar altimeter: methodology and applications
(Institute of Electrical and Electronics Engineers (IEEE), 2024-01-01)
Article
Open AccessThe 2-D frequency-based omega-K method is known to be a suitable algorithm for fully focused SAR (FF-SAR) radar altimeter processors, as its computational efficiency is much higher than equivalent time-based alternatives ... -
A Ku-band geosynchronous synthetic aperture radar mission analysis with medium transmitted power and medium-sized antenna
(IEEE, 2011)
Conference report
Restricted access - publisher's policyIn this paper, the feasibility of a geosynchronous satellite for Synthetic Aperture Radar applications is assessed. The nearly fixed position of geosynchronous satellites offers new features to SAR acquisition such as ... -
A near field 3D radar imaging technique
(Institute of Electrical and Electronics Engineers (IEEE), 1993)
Conference report
Open AccessThe paper presents an algorithm which recovers a 3D reflectivity image of a target from near-field scattering measurements. Spherical wave nearfield illumination is used, in order to avoid a costly compact range installation ... -
A near field spherical wave inverse synthetic aperture radar technique
(Institute of Electrical and Electronics Engineers (IEEE), 1992)
Conference report
Open AccessThe authors present an imaging near-field spherical wave inverse synthetic aperture radar (SWISAR) algorithm based on a focusing operator of the scattered fields on the target surface. A spherical wave can be easily generated ... -
A performance evaluation of SAR-GMTI missions for maritime applications
(Institute of Electrical and Electronics Engineers (IEEE), 2015-05-01)
Article
Open AccessThis paper proposes a new optimized multichannel synthetic aperture radar (SAR) configuration, based on receiving antennas with nonuniformly displaced phase centers, intended for ground moving target indication (GMTI) ... -
A polarimetric ultra-wide band field scatterometer
(Institute of Electrical and Electronics Engineers (IEEE), 1995)
Conference report
Open Access“TERESA” (Terrestrial Radar Equipment for Scattering Analysis) is a ground-based, fully polarimetric scatterometer operative in the S, C, X, and Ku bands. It has been designed to obtain the complete backscattering matrix ... -
A pulsed carrier recovery using a discrete conception of the PLL
(Institute of Electrical and Electronics Engineers (IEEE), 1992)
Conference report
Open AccessA bistatic radar system requires accurate synchronization between the transmitter and the remote receiver in order to achieve a correct coherent target detection and positioning. An unlinked receiver carrier phase/frequency ... -
Accuracy assessment of SAR interferometry using the ERS-1
(Institute of Electrical and Electronics Engineers (IEEE), 1995)
Conference report
Open AccessA SAR raw data simulator and a SAR processor are used as a tool for performance assessment of SAR interferometry algorithms like the multi-baseline and multifrequency. Traditional algorithms have also been tested with real ... -
Active microwave computed brain tomography: The response to a challenge
(1991-02)
Article
Restricted access - publisher's policyThe potential application of active microwave techniques to brain imaging is studied by numerical simulations and experimentally using a recently developed cylindrical microwave scanner. The potential advantages and ... -
Active microwave imaging: a cylindrical system for biomedical applications
(1988)
Conference report
Open AccessThe authors examine the use of active microwave tomography as an imaging technique which gives information on the dielectric properties of the body. They show that a cylindrical system is an efficient option to obtain ... -
Active microwave sensing of highly contrasted dielectric bodies
(1993-11)
Article
Restricted access - publisher's policyIn this work the active tomographic imaging of biological bodies which exhibits a high dielectric contrast is studied. Two approaches based on the Born approximation are presented: a differential reconstruction method which ... -
Actividades del grupo EEF en el contexto de la red europea TMR "Polarimetría radar: Teoría y aplicaciones"
(2000)
Conference report
Open AccessThe activity of the EEF group in the TMR European Project Radar Polarimetry: Theory and Applications will be presented in this paper. We have developed new polarimetric-interferometric retrieval algorithms and enhancement ... -
Advanced Interferometer development for precise geostationary satellite tracking
(Universitat Politècnica de Catalunya, 2021-02-10)
Bachelor thesis
Restricted access - confidentiality agreement -
Advanced radar geosynchronous observation system: ARGOS
(Institute of Electrical and Electronics Engineers (IEEE), 2015-07-01)
Article
Open AccessThe Advanced Radar Geosynchronous Observation System is proposed to be a multiple-input–multiple-output synthetic aperture radar (SAR) system hosted on a swarm of minisatellites in quasi-geostationary orbits. The system ... -
Algoritmo interferométrico para un sistema radar de apertura sintética circular de corto alcance
(1997)
Conference report
Open AccessThis paper presents an interferometric algorithm capable of working with SAR images obtained from measurements carried out with antennas that describe a circular trajectory. The antennas are positioned on a vertical mast ... -
Algoritmos de tomografía de microondas para objetos de alto contraste
(Universidad Politécnica de Madrid (UPM), 1988)
Conference report
Open AccessConventional first order algorithms used in microwave tomography often fail to reconstruct biological bodies due to their high contrast in permittivity. The paper presents several methods to improve the applicability of ... -
Algoritmos de tomografía de microondas para objetos de alto contrastre
(Universidad Politécnica de Madrid (UPM), 1988)
Conference report
Open AccessConventional first order algorithms used in microwave tomography often fail to reconstruct biological bodies due to their high contrast in permittivity. The paper presents several methods to improve the applicability of ... -
An efficient method for the azimuth compression of geosynchronous SAR data through sub-apertures processing
(Institute of Electrical and Electronics Engineers (IEEE), 2013)
Conference report
Restricted access - publisher's policyWe propose an efficient method for the azimuth compression and Atmospheric Phase Screen estimation of Geosynchronous SAR data. The method is based on the iterative processing of sub-apertures of increasing size, allowing ...
