Now showing items 21-40 of 75

  • Calibration trade-off in large interferometric radiometers devoted to earth observation 

    Torres Torres, Francisco; Camps Carmona, Adriano José; Corbella Sanahuja, Ignasi; Bará Temes, Francisco Javier; Duffo Ubeda, Núria; Vall-Llossera Ferran, Mercedes Magdalena (Centro Stampa, 1999)
    Conference report
    Open Access
  • Caracterización del ruido de fase de osciladores sintetizados con técnicas PLL 

    Torres Torres, Francisco; Bará Temes, Francisco Javier; Artal, Eduardo; Porta, Albert (1990)
    Conference report
    Open Access
  • Circuitos de microondas con líneas de transmisión 

    Bará Temes, Francisco Javier (Edicions UPC, 1994)
    Book
    Open Access
    El libro propone una introducción a las microondas sin recurrir al análisis electromagnético. Comienza por las líneas de transmisión, la carta de Smith y sus aplicaciones, y continua por la descripción de los circuitos de ...
  • Circuits de microones amb línies de transmissió 

    Bará Temes, Francisco Javier (Edicions UPC, 1993)
    Book
    Open Access
    El llibre proposa una introducció a les microones sense recórrer a l'anàlisi electromagnètica. Comença per les línies de transmissió, la carta de Smith i les seves aplicacions, i continua per la descripció de circuits de ...
  • Dispersion characteristics and field structure of an axially magnetized ferrite loaded rectangular waveguide 

    Bará Temes, Francisco Javier (Institute of Electrical and Electronics Engineers (IEEE), 1972)
    Conference report
    Open Access
    A basic limitation in an earlier work on the axially magnetized, ferrite loaded rectangular guide has led to a detailed re-examination of this problem. Both a series solution and a perturbational technique are used to find ...
  • Efecto de la reducción simétrica del plano de tierra en líneas microstrip 

    Bará Temes, Francisco Javier (1981)
    Conference report
    Open Access
    The variations of the characteristic impedance and wavelength of a symmetrical biplate line with the width of the upper plate held constant are studied, for several widely used dielectrics, by the method of moments with a ...
  • End-to-end Simulator of 2-D Interferometric Radiometry 

    Corbella Sanahuja, Ignasi; Camps Carmona, Adriano José; Zapata González, Miguel; Marcos, Fernando; Martínez, Francisco; Torres Torres, Francisco; Vall-Llossera Ferran, Mercedes Magdalena; Duffo Ubeda, Núria; Bará Temes, Francisco Javier (AMER GEOPHYSICAL UNION, 2003-07-31)
    Article
    Open Access
    An end-to-end simulator for the assessment of the performances of a spaceborne interferometric radiometer measuring the brightness temperature of Earth’s surface (ground and sea) is presented. The tool covers the complete ...
  • Estudio de la convergencia del método de momentos en cálculos estáticos de líneas planares 

    Bará Temes, Francisco Javier (1980)
    Conference report
    Open Access
    The moments method is applied to a Green's function formulation of the static solution of a microstrip line with pulses as basis functions and Dirac deltas or pulses as testing functions. The system capacitance per unit ...
  • Evaluation of MIRAS space borne instrument performance: snap shot radiometric accuracy and its improvement by means of pixel averaging 

    Camps Carmona, Adriano José; Torres Torres, Francisco; Bará Temes, Francisco Javier; Corbella Sanahuja, Ignasi; Martín Neira, Manuel (1997)
    Conference report
    Open Access
  • Experimental validation of radiometric sensitivity in correlation radiometers 

    Camps Carmona, Adriano José; Bará Temes, Francisco Javier; Torres Torres, Francisco; Corbella Sanahuja, Ignasi; Monzón Soria, Francisco Jose (IEE-INST ELEC ENG, 1998-12-31)
    Article
    Open Access
    The prediction of the radiometric sensitivity of correlation radiometers based on the system parameters requires knowledge of the standard deviation of each measurement due to the finite integration time. Theoretical ...
  • Extension of the clean technique to the microwave imaging of continuous thermal sources by means of aperture synthesis radiometers 

    Camps Carmona, Adriano José; Bará Temes, Francisco Javier; Torres Torres, Francisco; Corbella Sanahuja, Ignasi (1998-01)
    Article
    Restricted access - publisher's policy
  • Filtros para túneles de calentamiento o secado por microondas 

    Bará Temes, Francisco Javier (Universidad de Cantabria, 1982)
    Conference report
    Open Access
    Para un tipo de filtro de entrada/salida se demuestra la insensibilidad aproximada de su comportamiento a variaciones de la carga en el túnel, y se presenta un diseño realizado para un prototipo de secadero de azulejos ...
  • Impact of antenna errors on the radiometric accuracy of large aperture synthesis radiometers 

    Camps Carmona, Adriano José; Bará Temes, Francisco Javier; Torres Torres, Francisco; Corbella Sanahuja, Ignasi; Romeu Robert, Jordi (1997-04)
    Article
    Restricted access - publisher's policy
    A classification of system errors in aperture synthesis radiometry applied to Earth observation is presented. A general procedure to quantify the impact of antenna errors on the radiometric accuracy is developed and is ...
  • Impact of antenna errors on the radiometric accuracy of large aperture synthesis radiometers. Study applied to MIRAS 

    Camps Carmona, Adriano José; Bará Temes, Francisco Javier; Torres Torres, Francisco; Corbella Sanahuja, Ignasi; Romeu Robert, Jordi (American Geophysical Union, 1997-04-30)
    Article
    Open Access
    A classification of system errors in aperture synthesis radiometry applied to Earth obervation is presented. A general procedure to quantify th eimpact of antenna errors on the radiometric accuracy is developed and is then ...
  • Impact of receiver errors on the radiometric resolution of large two-dimensional aperture synthesis radiometers 

    Torres Torres, Francisco; Camps Carmona, Adriano José; Bará Temes, Francisco Javier; Corbella Sanahuja, Ignasi (1997-04)
    Article
    Restricted access - publisher's policy
    The specifications of the subsystems that compound a radiometer interferometer devoted to Earth observation are of main concern because they set the viability and final performance of such an instrument. The importance of ...
  • Integration of MIRAS breadboard and future activities 

    Martín Neira, Manuel; Goutoule, J.M.; Knight, A.; Claude, J.; Bará Temes, Francisco Javier; Camps Carmona, Adriano José; Torres Torres, Francisco; Corbella Sanahuja, Ignasi; Lannes, A.; Anterrieu, E.; Laursen, B.; Skou, N. (1996)
    Conference report
    Open Access
    The European Space Agency (ESA) is conducting a feasibility study on MIRAS, a Microwave Imaging Radiometer using two dimensional aperture synthesis, for the mapping of soil moisture and ocean salinity from space. An aircraft ...
  • Interferometric radiometry and its applications 

    Camps Carmona, Adriano José; Bará Temes, Francisco Javier; Corbella Sanahuja, Ignasi; Torres Torres, Francisco; Duffo Ubeda, Núria; Vall-Llossera Ferran, Mercedes Magdalena (1999)
    Conference report
    Open Access
  • Inter-island optical link tests 

    Comerón Tejero, Adolfo; Bará Temes, Francisco Javier; Belmonte Molina, Aniceto; Ruiz, Domingo; Czichy, Reinhard (1990-05)
    Article
    Open Access
  • Inter-islands optical link tests 

    Comerón Tejero, Adolfo; Bará Temes, Francisco Javier (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 1990-05-01)
    Article
    Open Access
    Free-space optical communication systems between satellites and also between a satellite and a ground station foreseen in Europe in the mid-1990's require far-field on-ground experimentation prior to launch. To identify ...
  • Inter-mountain laser communication test 

    Ruiz, Domingo; Czichy, Reinhard; Bará Temes, Francisco Javier; Comerón Tejero, Adolfo; Belmonte Molina, Aniceto; Menendez-Valdes, Pedro; Blanco, Fernando; Pedreira, C. (1990)
    Conference report
    Open Access
    Results are presented on laser-diode (LD) based intermountain tests carried out as a support activity to ESA's Free-space Optical Communications program to evaluate the Canary Islands (Spain) as an optical communicaton ...