Now showing items 1-20 of 34

    • A two-dimensional doppler-radiometer for earth observation 

      Camps Carmona, Adriano José; Swift, Calvin T. (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2001-07-31)
      Article
      Open Access
      Compared to synthetic aperture radars (SARs), the angular resolution of microwave radiometers is quite poor. Traditionally, it has been limited by the physical size of the antenna. However, the angular resolution can be ...
    • Analysis of Correlation and Total Power Radiometer Front-Ends Using Noise Waves 

      Corbella Sanahuja, Ignasi; Torres Torres, Francisco; Camps Carmona, Adriano José; Duffo Ubeda, Núria; Vall-Llossera Ferran, Mercedes Magdalena; Rautiainen, Kimmo; Martín Neira, Manuel; Colliander, Andreas (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2005-11-30)
      Article
      Open Access
      A complete and systematic noise analysis of radiometer front-ends, including both total power and correlation measurements, is presented. The procedure uses the concepts of noise waves and S-parameters, widely used in ...
    • Analysis of correlation and total power radiometer front-ends using noise waves 

      Corbella Sanahuja, Ignasi; Torres Torres, Francisco; Camps Carmona, Adriano José; Duffo Ubeda, Núria; Vall-Llossera Ferran, Mercedes Magdalena; Rautiainen, Kimmo; Martín Neira, Manuel; Colliander, Andreas (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2005-11-30)
      Article
      Open Access
      A complete and systematic noise analysis of radiometer front-ends, including both total power and correlation measurements, is presented. The procedure uses the concepts of noise waves and S-parameters, widely used in ...
    • Close range remote control with advanced capabilities 

      Huiculescu, Magda; Carlino, Marco Ferdinando; Kobus, Michal; Pereira Gega, Miquel Àngel (Universitat Politècnica de Catalunya, 2016-06-16)
      Bachelor thesis
      Restricted access - author's decision
      When a marine underwater housing with electronic equipment is deployed it is usually switched off during transport to the deployment location, which can take days to weeks. The system is then switched on just before its ...
    • Compensation of elevation angle variations in polarimetric brightness temperature measurements from airborne microwave radiometers 

      Corbella Sanahuja, Ignasi; Gasiewski, A.J.; Klein, Marian; Piepmeier, Jeffrey R. (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2001-01-31)
      Article
      Open Access
      This paper presents a method for compensating the elevation angle fluctuations occurring in airborne radiometry due to aircraft roll and pitch. The correction is based on a radiative transfer model, and is demonstrated by ...
    • Considerations About Antenna Pattern Measurements of 2-D Aperture Synthesis Radiometers 

      Camps Carmona, Adriano José; Skou, Neils; Torres Torres, Francisco; Corbella Sanahuja, Ignasi; Duffo Ubeda, Núria (IEEE, 2006-04-30)
      Article
      Open Access
      Accurate measurement of the antenna voltage patterns of large-aperture synthesis radiometers is critical in order to achieve good radiometric accuracy, and a very time consuming and expensive task. Measurement requirements ...
    • Considerations about antenna pattern measurements of 2-D aperture synthesis radiometers 

      Camps Carmona, Adriano José; Skou, Neils; Torres Torres, Francisco; Corbella Sanahuja, Ignasi; Duffo Ubeda, Núria (IEEE, 2006-04-30)
      Article
      Open Access
      Accurate measurement of the antenna voltage patterns of large-aperture synthesis radiometers is critical in order to achieve good radiometric accuracy, and a very time consuming and expensive task. Measurement requirements ...
    • Dual-beam interferometry for ocean surface current vector mapping 

      Frasier, Stephen J.; Camps Carmona, Adriano José (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2001-02-28)
      Article
      Open Access
      The recent use of along-track interferometry (ATI) in synthetic aperture radar (SAR) has shown promise for synoptic measurement of ocean surface currents. ATI-SARs have been used to estimate wave fields, currents, and ...
    • Estudio y pruebas de campo de WUSNs (Wireless Underground Sensor Networks) 

      Merino Garrido, Samuel (Universitat Politècnica de Catalunya, 2007-10-31)
      Master thesis (pre-Bologna period)
      Open Access
      En este TFC introduciremos el concepto de redes de sensores subterráneas (Wireless Underground Sensor Networks, WUSN). Una red de sensores inalámbrica (WSN) es una red que consiste en dispositivos autónomos distribuidos ...
    • Extension of Kirchhoff method under stationary phase approximation to determination of polarimetric thermal emission from the sea 

      Camps Carmona, Adriano José; Corbella Sanahuja, Ignasi; Rius Casals, Juan Manuel (IEE-INST ELEC ENG, 1998-07-31)
      Article
      Open Access
      Wind direction over the sea can be determined from radiometric measurements of the third Stokes parameter (TU). The Kirchhoff method is extended under the stationary phase approximation to compute the dependence of TU on ...
    • GRECO-SAR: An Orbital Polarimetric SAR Simulator of Deterministic Complex Targets for Vessel Classification Studies 

      Margarit Martín, Gerard; Mallorquí Franquet, Jordi Joan; Rius Casals, Juan Manuel; Sanz Marcos, Jesús (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2006-12-31)
      Article
      Open Access
      This paper presents a synthetic aperture radar (SAR) simulator that is able to generate polarimetric SAR (POLSAR) and polarimetric inverse SAR data of complex targets. It solves the electromagnetic problem via high-frequency ...
    • Intelligent sensor based on acoustic emission analysis applied to gear fault diagnosis 

      Zurita Millán, Daniel; Delgado Prieto, Miquel; Ortega Redondo, Juan Antonio; Romeral Martínez, José Luis (Institute of Electrical and Electronics Engineers (IEEE), 2013)
      Conference report
      Restricted access - publisher's policy
      The development of intelligent and autonomous monitoring systems applied to rotating machinery, represents the evolution towards the automatic industrial plants supervision. In this regard, an acoustic emission based ...
    • Interferometric SAR signal analysis in the presence of squint 

      Bara Iniesta, Marc Antoni; Scheiber, Rolf; Broquetas Ibars, Antoni; Moreira, Alberto (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2000-09-30)
      Article
      Open Access
      This paper develops an analysis of the SAR impulse response function from the interferometric point of view, with the intention of studying its phase behavior in the presence of high squint angle values. It will be pointed ...
    • MIRAS End-to-End Calibration: Application to SMOS L1 Processor 

      Corbella Sanahuja, Ignasi; Torres Torres, Francisco; Camps Carmona, Adriano José; Colliander, Andreas; Martín Neira, Manuel; Ribó Vedrilla, Serni; Rautiainen, Kimmo; Duffo Ubeda, Núria; Vall-Llossera Ferran, Mercedes Magdalena (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2005-05-31)
      Article
      Open Access
      End-to-end calibration of the Microwave Imaging Radiometer by Aperture Synthesis (MIRAS) radiometer refers to processing the measured raw data up to dual-polarization brightness temperature maps over the earth's surface, ...
    • MIRAS end-to-end calibration: application to SMOS L1 processor 

      Vall-Llossera Ferran, Mercedes Magdalena; Corbella Sanahuja, Ignasi; Torres Torres, Francisco; Camps Carmona, Adriano José; Colliander, A; Martín Neira, Manuel; Ribó Vedrilla, Serni; Rautiainen, K; Duffo Ubeda, Núria (IEEE Press. Institute of Electrical and Electronics Engineers, 2005-05)
      Article
      Open Access
      End-to-end calibration of the Microwave Imaging Radiometer by Aperture Synthesis (MIRAS) radiometer refers to processing the measured raw data up to dual-polarization brightness temperature maps over the earth's surface, ...
    • On the extension of multidimensional speckle noise model from single-look to multilook SAR imagery 

      López Martínez, Carlos; Pottier, Eric (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2007-02-28)
      Article
      Open Access
      Speckle noise represents one of the major problems when synthetic aperture radar (SAR) data are considered. Despite the fact that speckle is caused by the scattering process itself, it must be considered as a noise source ...
    • On-board phase and modulus calibration of large aperture synthesis radiometers: study applied to miras. 

      Torres Torres, Francisco; Camps Carmona, Adriano José; Bará Temes, Francisco Javier; Corbella Sanahuja, Ignasi; Ferrero Pintor, Roberto (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 1996-07-01)
      Article
      Open Access
      On-board calibration of bidimensional aperture synthesis radiometers with a large number of antennas by the standard correlated noise injection method is technologically very critical because of the stringent requirements ...
    • Parallel software for retrieval of aerosol distribution from LIDAR Data in the framework of EARLINET-ASOS 

      Osterloh, L.; Pérez García-Pando, Carlos; Böhme, D.; Baldasano Recio, José María; Böckmann, Ch.; Schneidenbach, L.; Vicente, D. (2009-11-01)
      Article
      Restricted access - publisher's policy
      We present new software for the retrieval of the volume distribution –and thus, other relevant microphysical properties such as the effective radius– of stratospheric and tropospheric aerosols from multiwavelength LIDAR ...
    • Performance of sea surface salinity and soil moisture retrieval algorithms with different auxiliary datasets in 2-D L-band aperture synthesis interferometric radiometers 

      Camps Carmona, Adriano José; Vall-Llossera Ferran, Mercedes Magdalena; Batres Gonzalez, Luis; Torres Torres, Francisco; Duffo Ubeda, Núria; Corbella Sanahuja, Ignasi (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2005-05-31)
      Article
      Open Access
      The Soil Moisture and Ocean Salinity (SMOS) Earth Explorer Opportunity Mission was selected in May 1999 by the European Space Agency Earth Observation Programme Board to provide global and frequent soil moisture (SM) and ...
    • Performance Of Sea Surface Salinity And Soil Moisture Retrieval Algorithms With Different Auxiliary Datasets In 2-D L-Band Aperture Synthesis Interferometric Radiometers 

      Camps Carmona, Adriano José; Vall-Llossera Ferran, Mercedes Magdalena; Batres Gonzalez, Luis; Torres Torres, Francisco; Duffo Ubeda, Núria; Corbella Sanahuja, Ignasi (IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, INC, 2005-05-31)
      Article
      Open Access
      The Soil Moisture and Ocean Salinity (SMOS) Earth Explorer Opportunity Mission was selected in May 1999 by the European Space Agency Earth Observation Programme Board to provide global and frequent soil moisture (SM) and ...