Now showing items 1-16 of 16

  • Acoustic modem for underwater sensor networks 

    Sarriá Gandul, David; Pallarés Valls, Oriol; Río Fernandez, Joaquín del (SARTI, 2014)
    Article
    Open Access
  • Clock synchronization of a broadband seismometer through 

    Pallarés Valls, Oriol; Río Fernandez, Joaquín del; Shariat Panahi, Shahram (SARTI, 2010)
    Article
    Open Access
  • Contribution to COBS synchronization with PTP IEEE std. 1588 

    Pallarés Valls, Oriol; Cadena Muñoz, Francisco Javier; Carreras Pons, Normandino; Toma, Daniel; Río Fernandez, Joaquín del (2013)
    Conference report
    Restricted access - publisher's policy
  • Disseny d'un sistema electrònic pel control de rumb i de posicionament d'un Autonomous Underwater Vehicle 

    Viñolo Monzoncillo, Carlos; Pallarés Valls, Oriol (Universitat Politècnica de Catalunya, 2009-07)
    Master thesis (pre-Bologna period)
    Open Access
    Un dels camps de recerca més importants en el sector de la nàutica i les telecomunicacions és el desenvolupament de sistemes d’estudi oceanogràfic, ja siguin estàtics, boies, vehicles que recorren les zones indicades ...
  • GPS time synchronization through IEEE-1588 protocol 

    Pallarés Valls, Oriol (Universitat Politècnica de Catalunya / České vysoké učení technické v Praze, 2011-01)
    Master thesis
    Open Access
    Covenantee:  České vysoké učení technické v Praze
    [ANGLÈS] Clock synchronization of seismometers is a key point to find the exact location of the earthquake. When seismometers are installed at seafloor observatories, data is collected through a marine cable and by using ...
  • Hybrid time synchronization for Underwater Sensor Networks 

    Pallarés Valls, Oriol; Bouvet, Pierre-Jean; Río Fernandez, Joaquín del (2014)
    Conference lecture
    Open Access
    Time synchronization is an important part of distributed applications over a sensor network. In this work we investigate time synchronization problems over a shallow UWSN, taking into account all main communication challenges ...
  • Hybrid time synchronization for Underwater Sensor Networks 

    Pallarés Valls, Oriol; Bouvet, Pierre-Jean; Río Fernandez, Joaquín del (2015-09-30)
    Article
    Open Access
    Time synchronization is a critical part of distributed applications over a sensor network. In this work we investigate time synchronization problems over UWSN deployed in shallow water, taking into account all main ...
  • Low cost OFDM based transmitter for underwater acoustic communications 

    Sarriá Gandul, David; Pallarés Valls, Oriol; Río Fernandez, Joaquín del; Manuel Lázaro, Antonio (2013)
    Conference report
    Open Access
    On this work a low cost OFDM transmitter for underwater sensor networks is presented. The transmitter is based on a low power microcontroller that governs a DDS in order to generate the output data -OFDM symbols- avoiding ...
  • Preliminary OFDM based acoustic communication for underwater sensor networks synchronization 

    Pallarés Valls, Oriol; Sarriá Gandul, David; Viñolo Monzoncillo, Carlos; Río Fernandez, Joaquín del; Manuel Lázaro, Antonio (2013)
    Conference report
    Open Access
    This work presents a first approach to wireless underwater sensor networks UWSN time synchronization, using OFDM (Orthogonal Frequency Division Multiplexing) acoustic communication and time reference served by a ...
  • Range-only underwater target localization : error characterization 

    Masmitjà Rusiñol, Ivan; Pallarés Valls, Oriol; Gomáriz Castro, Spartacus; Río Fernandez, Joaquín del; O’Reilly, T; Kieft, B (2016)
    Conference report
    Open Access
    Locating a target from range measurements using only one mobile transducer has been increased over the last years. This method allows us to reduce the high costs of deployment and maintenance of traditional fixed systems ...
  • Sistema de test de motores electrónicos doga para ensayos en cabinas húmedas y cámara climática 

    Río Fernandez, Joaquín del; Sarriá Gandul, David; Pallarés Valls, Oriol; Rull, Albert (SARTI, 2014)
    Article
    Open Access
  • Time synchronization accuracy refinement for mobile shallow water acoustic sensor network 

    Pallarés Valls, Oriol; Río Fernandez, Joaquín del; Bouvet, Pierre-Jean (2016)
    Conference report
    Restricted access - publisher's policy
    Time synchronization is an important factor to take into account when performing collaborative and distributed tasks along a sensor network. Message exchange based time synchronization algorithms ported to underwater ...
  • Time synchronization in underwater acoustic sensor networks 

    Pallarés Valls, Oriol (Universitat Politècnica de Catalunya, 2016-11-30)
    Doctoral thesis
    Open Access
    This thesis deals with the development of a time synchronization algorithm for underwater sensor networks. The ease of deployment and maintenance of wireless networks leaded this research to the use of an acoustic communication ...
  • Time synchronization of a commercial seismometer through IEEE-1588 

    Pallarés Valls, Oriol; Shariat Panahi, Shahram; Río Fernandez, Joaquín del; Manuel Lázaro, Antonio (SARTI, 2011)
    Article
    Open Access
  • TS-MUWSN: Time synchronization for mobile underwater sensor networks 

    Pallarés Valls, Oriol; Bouvet, Pierre-jean; Río Fernandez, Joaquín del (2016-10-01)
    Article
    Open Access
    Time synchronization is an important, yet challenging, problem in underwater sensor networks (UWSNs). This challenge can be attributed to: 1) messaging timestamping; 2) node mobility; and 3) Doppler scale effect. To mitigate ...
  • Underwater acoustic communication messaging time stamp applied to global time synchronization 

    Pallarés Valls, Oriol; Río Fernandez, Joaquín del; Bouvet, Pierre-Jean (Institute of Electrical and Electronics Engineers (IEEE), 2014)
    Conference report
    Restricted access - publisher's policy
    This paper presents a new approach to time stamp messages in underwater acoustic communication. Message time stamping is a widely used method for synchronizing two clocks over a cabled or wireless communication, by ...