Results 41 to 50 of about 195,439 (333)
Assessment of tomographic window and sampling rate effects on GNSS water vapor tomography
Satellite Navigation, 2023 The ground-based Global Navigation Satellite System (GNSS) water vapor tomography is increasingly important in GNSS meteorology. As the multi-GNSS and more ground-based GNSS sites can be incorporated into the regional water vapor tomographic model ...
Fei Yang +4 more
semanticscholar +1 more source
Assessing IGS GPS/Galileo/BDS-2/BDS-3 phase bias products with PRIDE PPP-AR
Satellite Navigation, 2021 Ambiguity Resolution in Precise Point Positioning (PPP-AR) is important to achieving high-precision positioning in wide areas. The International GNSS (Global Navigation Satellite System) Service (IGS) and some other academic organizations have begun to ...
Jianghui Geng, Songfeng Yang, Jiang Guo
doaj +1 more source
Estimation and evaluation of COSMIC radio occultation excess phase using undifferenced measurements [PDF]
Atmospheric Measurement Techniques, 2017 In the GPS radio occultation technique, the atmospheric excess phase (AEP) can be used to derive the refractivity, which is an important quantity in numerical weather prediction.
P. Xia, S. Ye, K. Jiang, D. Chen
doaj +1 more source
FLAMINGO – Fulfilling enhanced location accuracy in the mass-market through initial GalileO services [PDF]
, 2018 This paper discusses FLAMINGO, an initiative that will provide a high accuracy positioning service to be used by mass market applications. The status and future for the initiative are discussed, the required accuracies and other location parameters are ...
Arzel, Laurent +7 more
core +1 more source
A Robust GNSS/PDR Integration Scheme with GRU-Based Zero-Velocity Detection for Mass-Pedestrians
Remote Sensing, 2022 Aiming at the problem of high-precision positioning of mass-pedestrians with low-cost sensors, a robust single-antenna Global Navigation Satellite System (GNSS)/Pedestrian Dead Reckoning (PDR) integration scheme is proposed with Gate Recurrent Unit (GRU)-
Dongpeng Xie +6 more
semanticscholar +1 more source
Recurrent Neural Networks Applied to GNSS Time Series for Denoising and Prediction [PDF]
, 2019 Global Navigation Satellite Systems (GNSS) are systems that continuously acquire data and provide position time series. Many monitoring applications are based on GNSS data and their efficiency depends on the capability in the time series analysis to ...
Cascarano, Pasquale +5 more
core +1 more source
A Survey of GNSS Spoofing and Anti-Spoofing Technology
Remote Sensing, 2022 With the development of satellite navigation technology, the research focus of GNSS has shifted from improving positioning accuracy to expanding system application and improving system performance.
Lianxiao Meng +3 more
semanticscholar +1 more source
Water Resources Research, 2022 Hydrogeodesy, a relatively new field within the earth sciences, is the analysis of the distribution and movement of terrestrial water at Earth's surface using measurements of Earth's shape, orientation, and gravitational field.
Alissa M. White +4 more
semanticscholar +1 more source
Recent Advances on Jamming and Spoofing Detection in GNSS
Italian National Conference on SensorsIncreased interest in the development and integration of navigation and positioning services into a wide range of receivers makes them susceptible to a variety of security attacks such as Global Navigation Satellite Systems (GNSS) jamming and spoofing ...
Katarina Radoš +2 more
semanticscholar +1 more source
Satellite Navigation, 2022 Precise Point Positioning (PPP) with Ambiguity Resolution (AR) is an important high-precision positioning technique that is gaining popularity in geodetic and geophysical applications. The implementation of PPP-AR requires precise products such as orbits,
Jianghui Geng +4 more
doaj +1 more source