gAGE - grup d'Astronomia i GEomàtica: Recent submissions

Now showing items 1-12 of 212

    • Stationary detection for zero velocity update of IMU based on the vibrational FFT feature of land vehicle 

      Li, Mowen; Nie, Wenfeng; Suvorkin, Vladimir; Rovira Garcia, Adrià; Zhang, Wei; Xu, Tianhe; Xu, Guochang (Multidisciplinary Digital Publishing Institute (MDPI), 2024-03-04)
      Article
      Open Access
      The inertial navigation system (INS) and global satellite navigation system (GNSS) are two of the most significant systems for land navigation applications. The inertial measurement unit (IMU) is a kind of INS sensor that ...

    • Performance Report 

      Juan Zornoza, José Miguel; Sanz Subirana, Jaume; Rovira Garcia, Adrià; González Casado, Guillermo; Timoté Bejarano, Cristhian Camilo (2022-03-15)
      Research report
      Restricted access - author's decision

    • Advantages of computing ROTI from single-frequency L1 carrier-phase measurements of geodetic receivers operating at 1 Hz 

      Yin, Yu; González Casado, Guillermo; Aragón Ángel, María Ángeles; Juan Zornoza, José Miguel; Sanz Subirana, Jaume; Rovira Garcia, Adrià; Timoté Bejarano, Cristhian Camilo; Orús Pérez, Raul (Institute of Electrical and Electronics Engineers (IEEE), 2024)
      Article
      Open Access
      The customary procedure to compute the rate of total electron content index (ROTI) presents some limitations when using the geometry-free (GF) combination of Global Positioning System (GPS) L1 and L2 carriers tracked by ...

    • Real-time detection and correction of abnormal errors in GNSS observations on smartphones 

      Mu, Hongbo; Yu, Xianwen; Aragón Ángel, María Ángeles; Wang, Jiafu; Wu, Yanze (Multidisciplinary Digital Publishing Institute (MDPI), 2024-08-23)
      Article
      Open Access
      Smartphones, due to the integration of low-cost GNSS chips and linearly polarized antennas, frequently experience abnormal errors in their observations, particularly during positioning on water surfaces. In response to ...

    • Assessment of noise of MEMS IMU sensors of different grades for GNSS/IMU navigation 

      Suvorkin, Vladimir; García Fernández, Miquel; González Casado, Guillermo; Li, Mowen; Rovira Garcia, Adrià (Multidisciplinary Digital Publishing Institute (MDPI), 2024-03-19)
      Article
      Open Access
      Inertial measurement units (IMUs) are key components of various applications including navigation, robotics, aerospace, and automotive systems. IMU sensor characteristics have a significant impact on the accuracy and ...

    • The 2021 la Palma volcanic eruption and its impact on ionospheric scintillation as measured from GNSS reference stations, GNSS-R and GNSS-RO 

      Molina Ordóñez, Carlos; Boudriki Semlali, Badr Eddine; González Casado, Guillermo; Hyuk, Park; Camps Carmona, Adriano José (European Geosciences Union (EGU), 2023-11-29)
      Article
      Open Access
      Ionospheric disturbances induced by seismic activity have been studied in recent years by many authors, showing an impact both before and after the occurrence of earthquakes. In this study, the ionospheric scintillation ...

    • Software prototype for the Galileo ionospheric correction model: progress report 

      Aragón Ángel, María Ángeles; Zürn, M. (2016-11-15)
      Research report
      Open Access
      The document describing the particular ionospheric model developed for the Galileo satellite navigation system has been officially released [1]. Its publication allows GNSS receiver manufacturers to start the implementation ...

    • Beacon Satellite Symposium: Session 5B - June 30th 2016: Radio occultation techniques and measurements 

      Aragón Ángel, María Ángeles (2016-11-16)
      Research report
      Open Access
      During the Beacon Satellite Symposium, held in Trieste, Italy, between June 26 and July 1 2016, the JRC chaired the session 5B: Radio Occultation Techniques and Measurements. The corresponding abstract of the session is ...

    • The selection of basic functions for a time-varying model of unmodeled errors in medium and long GNSS baselines 

      Wang, Jiafu; Yu, Xianwen; Aragón Ángel, María Ángeles; Rovira Garcia, Adrià; Wang, Hao (Multidisciplinary Digital Publishing Institute (MDPI), 2023-10-19)
      Article
      Open Access
      Unmodeled errors play a critical role in improving the positioning accuracy of Global Navigation Satellite Systems. Few studies have addressed unmodeled errors in medium and long baselines using their time correlation, ...

    • State-of-art products for real time scintillation monitoring and consolidated requirements for the activity 

      González Casado, Guillermo; Juan Zornoza, José Miguel; Yin, Yu; Timoté Bejarano, Cristhian Camilo; Sanz Subirana, Jaume; Rovira Garcia, Adrià (2022-12-15)
      Research report
      Restricted access - confidentiality agreement

    • Inter-system biases solution strategies in multi-GNSS kinematic precise point positioning 

      Li, Mowen; Rovira Garcia, Adrià; Nie, Wenfeng; Xu, Tianhe; Xu, Guochang (2023-07)
      Article
      Open Access
      Estimating inter-system biases (ISBs) is important in multi-constellation Global Navigation Satellite System (GNSS) processing. The present study aims to evaluate and screen out an optimal estimation strategy of ISB for ...

    • Ionospheric scintillation models: An inter-comparison study using GNSS data 

      Camps Carmona, Adriano José; Molina Ordóñez, Carlos; González Casado, Guillermo; Juan Zornoza, José Miguel; Lemorton, Joël; Fabbro, Vincent; Mainvis, Aymeric; Barbosa, José; Orús Pérez, Raul (IntechOpen, 2023-06-21)
      Part of book or chapter of book
      Open Access
      Existing climatological ionosphere models, for example, GISM, SCIONAV, WBMOD, and STIPEE, have known limitations that prevent their wide use. In the framework of ESA study “Radio Climatology Models of the Ionosphere: Status ...