Exploració per tema "Global Positioning System"

Ara es mostren els items 41-60 de 475

    • An airborne GNSS-R field experiment over a vineyard for soil moisture estimation and monitoring 

      Alonso Arroyo, Alberto; Camps Carmona, Adriano José; Sanchez, Nilda; Pablos Hernández, Miriam; González Zamora, Ángel; Martinez Fernandez, Jose; Vall-Llossera Ferran, Mercedes Magdalena; Pascual, D. (Institute of Electrical and Electronics Engineers (IEEE), 2015)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      The Light Airborne Reflectometer for GNSS-R Observations (LARGO) is an airborne instrument designed for measuring the coherent reflectivity from different soils. In this work, an improved version of LARGO has been used in ...

    • An alternative wearable tracking system based on a low-power wide-area network 

      Fernández García, Raúl; Gil Galí, Ignacio (2017-03-14)
      Article
      Accés obert
      This work presents an alternative wearable tracking system based on a low-power wide area network. A complete GPS receiver was integrated with a textile substrate, and the latitude and longitude coordinates were sent to ...

    • An analysis of the correlation between the fast variations in the total electron content of the ionosphere and the carrier phase fluctuations of radio signals from global navigation satellite systems 

      Sala i Marco, Roger (Universitat Politècnica de Catalunya, 2021-06-22)
      Projecte Final de Màster Oficial
      Accés obert
      onospheric scintillation consists on rapid fluctuations in the amplitude and phase of electromagnetic signals, which includes those of the Global Navigation Satellite System (GNSS), that can lead to cycle slips and even ...

    • An Experimental Performance Evaluation of Innovations Sequence-based INS Monitor against GNSS Spoofing 

      Martinez Jimenez, Pau (Universitat Politècnica de Catalunya, 2018)
      Projecte Final de Màster Oficial
      Accés obert
      Realitzat a/amb:   Illinois Institute of Technology

    • An improvement of offset tracking for cross hair (CH) and patch like (PL) elimination and reliability estimation for large deformation monitoring with SAR data 

      Du, Sen; Mallorquí Franquet, Jordi Joan (Institute of Electrical and Electronics Engineers (IEEE), 2021)
      Text en actes de congrés
      Accés obert
      SAR based offset tracking (OT) is an efficient tool for ground deformation observation, and signal to noise ratio (SNR) is its common error indicator. However, ground feature variations often weaken the accuracy of OT. In ...

    • An open-source software-defined radio collection for GNSS receivers 

      Bernabeu Frias, Joan Miguel (Universitat Politècnica de Catalunya, 2022-07-04)
      Projecte Final de Màster Oficial
      Accés obert
      Realitzat a/amb:   University of Colorado Boulder
      The master's thesis has as a main objective to encompass the progress and efforts dedicated to the development and improvement of an open-source collection of Software-Defined Radios (SDR) for Global Navigation Satellite ...

    • Analysis and selection of a MEMS, multi-constellation GNSS receiver for a femtosatellite 

      Guerra Mentruit, Alejandro (Universitat Politècnica de Catalunya, 2020-02-14)
      Treball Final de Grau
      Accés obert
      Context: The expansion of space applications and their liberalization is an actual fact since the last decade. Small satellites are developed either by academic institutions and private companies. The concept of femtosatelites, ...

    • Analysis of Assisted GPS in LTE-Advanced networks and its applications to traditional and VTL based software receivers 

      Figueroa Naharro, Marta; Torné Sanjosé, Albert (Universitat Politècnica de Catalunya, 2013-05-30)
      Projecte/Treball Final de Carrera
      Accés obert
      [ANGLÈS] The performance of GPS, and all GNSS, degrades significantly in urban canyons and in indoor environments. There has been significant research in order to enhance the performance of a GPS receiver in such challenging ...

    • Analysis of GNSS-R delay and doppler tracking errors 

      Hyuk, Park; Camps Carmona, Adriano José; Valencia Domènech, Enric; Carreño Luengo, Hugo; Martín Alemany, Francisco; Alonso Arroyo, Alberto; Pascual Biosca, Daniel (2012)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The compensation of the delay and Doppler errors using tracking is important to accurately estimate the sea height in spaceborne GNSS-R. This work presents the impacts of the tracking residual errors on the GNSS-R observables, ...

    • Analysis of ionospheric disruptions in GNSS signals from Tonga eruption 

      Troilo, Giuseppe (Universitat Politècnica de Catalunya, 2022-07-13)
      Projecte Final de Màster Oficial
      Accés obert
      The Tonga volcano eruption at 04:15 UT on 2022-01-15 released enormous amounts of energy into the atmosphere, causing very significant geophysical variations not only in the immediate proximity of the epicenter but also ...

    • Analysis of spaceborne GNSS-R delay-doppler tracking 

      Hyuk, Park; Pascual Biosca, Daniel; Camps Carmona, Adriano José; Martínez Mindeguía, Francisco; Alonso Arroyo, Alberto; Carreño Luengo, Hugo (2014-05-01)
      Article
      Accés restringit per política de l'editorial
      For spaceborne Global Navigation Satellite System-Reflectometry (GNSS-R), the delay and Doppler frequency conditions dynamically change, so the compensation of the delay and Doppler errors using tracking is important to ...

    • Analysis of ‘Pre-Fit’ Datasets of gLAB by Robust Statistical Techniques 

      Alonso Alonso, María Teresa; Ferigato, Carlo; Ibáñez Segura, Deimos; Perrotta, Domenico; Rovira Garcia, Adrià; Sordini, Emmanuele (MDPI AG, 2021-05-24)
      Article
      Accés obert
      The GNSS LABoratory tool (gLAB) is an interactive educational suite of applications for processing data from the Global Navigation Satellite System (GNSS). gLAB is composed of several data analysis modules that compute the ...

    • Analysis tool for GNSS raw measurements 

      Domingo Lagman, Luis (Universitat Politècnica de Catalunya, 2022-09-06)
      Treball Final de Grau
      Accés obert
      Realitzat a/amb:   Politecnico di Torino
      Aquesta tesi es desenvolupa en el context de la missió Lunar GNSS Receiver Experiment de la NASA i la ASI, que té com a objectiu demostrar el posicionament, la navegació i el temps basats en GNSS a la Lluna mitjançant el ...

    • Analytical computation of the spatial resolution in GNSS-R and experimental validation at L1 and L5 

      Camps Carmona, Adriano José; Muñoz Martin, Joan Francesc (Multidisciplinary Digital Publishing Institute (MDPI), 2020-11-28)
      Article
      Accés obert
      Global navigation satellite systems reflectometry (GNSS-R) is a relatively novel remote sensing technique, but it can be understood as a multi-static radar using satellite navigation signals as signals of opportunity. The ...

    • Analyzing Anomalous Artefacts in TDS-1 Delay Doppler Maps 

      Hu, Changjiang; Benson, Craig; Hyuk, Park; Camps Carmona, Adriano José; Li, Qiao; Rizos, Chris (2019)
      Text en actes de congrés
      Accés obert
      Global Navigation Satellite System Reflectometry (GNSS-R) uses the GNSS reflected signals to study parameters of the Earth's surface such as ocean surface height, wind speed, soil moisture, sea surface target detection. ...

    • Anàlisi del rendiment i operativitat d'un sistema de navegació GPS/rasant suportat amb un giròscop i un odòmetre 

      Orozco García, Margarita; Ortega Moya, Sergio (Universitat Politècnica de Catalunya, 2000-09-12)
      Projecte/Treball Final de Carrera
      Accés restringit per decisió de l'autor

    • Análisis de la red GPS de control de subsidencia en la cuenca potásica catalana 

      Colina Durango, Elena Cristina (Universitat Politècnica de Catalunya, 2011-01)
      Projecte/Treball Final de Carrera
      Accés restringit per decisió de l'autor
      Los diferentes episodios de hundimientos del terreno en la cuenca potásica catalana, producidos en los últimos años, han hecho que la Administración Pública encargue estudios de control a diferentes entidades públicas. Uno ...

    • Answer to the comments on “Confirming geomagnetic Sfe by means of a solar flare detector based on GNSS” 

      Curto Subirats, Juan Jose; Juan Zornoza, José Miguel; Timote Bejarano, Cristhian Camilo (2020-04-20)
      Article
      Accés obert
      Hernández-Pajares and García-Rigo have written a document criticizing our paper “Confirming geomagnetic Sfe by means of a solar flare detector based on GNSS. J Space Weather Space Clim 9: A42. https://doi.org/10.1051/swsc/2019040” ...

    • Aplicaciones GPS en el entorno de los yacimientos arqueológicos de Atapuerca 

      Pérez Ramos, Alberto; Cuadras Crespo, Elisabet (Universitat Politècnica de Catalunya, 2002)
      Projecte/Treball Final de Carrera
      Accés restringit per decisió de l'autor
      El siguiente proyecto se llevó a cabo en la Sierra de Atapuerca (Burgos). Debido a la importancia de los yacimientos arqueológicos que en ella se encuentran se planteó la necesidad de la implantación de una red que permitiera ...

    • Aplicacions GNSS a l'agricultura de precisió 

      García Rodríguez, Noelia (Universitat Politècnica de Catalunya, 2011-02)
      Projecte/Treball Final de Carrera
      Accés restringit per decisió de l'autor
      L’agricultura de precisió s’entén com un conjunt de tècniques que permeten augmentar el rendiment operacional, reduir costos i millorar l’administració de la producció agrícola. El present treball final de carrera intenta ...