Results 21 to 30 of about 109,915 (264)
Protecting GNSS-based Services using Time Offset Validation [PDF]
, 2022 Global navigation satellite systems (GNSS) provide pervasive accurate positioning and timing services for a large gamut of applications, from Time based One-Time Passwords (TOPT), to power grid and cellular systems. However, there can be security concerns for the applications due to the vulnerability of GNSS.
arxiv +1 more source
Effectiveness of GNSS disposal strategies [PDF]
Acta Astronautica, 2014 The management of the Global Navigation Satellite Systems and of the MEO region as a whole is a subject that cannot be deferred, due to the growing exploitation and launch rate in that orbital regime. The advent of the European Galileo and the Chinese Compass constellations significantly added complexity to the system and call for as adequate global ...
Alessi E M +11 more
openaire +10 more sources
A Comparison of a GNSS‐GIM and the IRI‐2020 Model Over China Under Different Ionospheric Conditions
Space Weather, 2023 The ionosphere is a crucial factor affecting Global Navigation Satellite System positioning. The Global Ionosphere Map (GIM) or the International Reference Ionosphere (IRI) model can be used for regional ionospheric correction.
Rong He, Min Li, Qiang Zhang, Qile Zhao
doaj +1 more source
Sequential Ambiguity Resolution Method for Poorly-Observed GNSS Data
Remote Sensing, 2021 Integer ambiguity resolution is required to obtain precise coordinates for the global navigation satellite system (GNSS). Poorly observed data cause unfixed integer ambiguity and reduce the coordinate accuracy.
Haiyang Li +3 more
doaj +1 more source
A Testbed for Developing and Evaluating GNSS Signal Authentication Techniques [PDF]
, 2014 An experimental testbed has been created for developing and evaluating Global Navigation Satellite System (GNSS) signal authentication techniques.
Bhatti, Jahshan A. +3 more
core +1 more source
Low-Cost GNSS Simulators with Wireless Clock Synchronization for Indoor Positioning [PDF]
, 2023 In regions where global navigation satellite systems (GNSS) signals are unavailable, such as underground areas and tunnels, GNSS simulators can be deployed for transmitting simulated GNSS signals. Then, a GNSS receiver in the simulator coverage outputs the position based on the received GNSS signals (e.g., Global Positioning System (GPS) L1 signals in ...
arxiv +1 more source
Remote Sensing, 2021 The displacement of Global Navigation Satellite System (GNSS) station contains the information of surface elastic deformation caused by the variation of land water reserves.
Yuefan He +3 more
doaj +1 more source
Considerations for Future IGS Receivers [PDF]
, 2008 Future IGS receivers are considered against the backdrop of GNSS signal modernization and the IGS’s goal of further improving the accuracy of its products.
Humphreys, Todd E. +2 more
core +1 more source
Helmert Variance Component Estimation for Multi-GNSS Relative Positioning [PDF]
, 2020 The Multi-constellation Global Navigation Satellite System (Multi-GNSS) has become the standard implementation of high accuracy positioning and navigation applications.
Fang, Zhenlong +5 more
core +2 more sources
SNR degradation in GNSS-R measurements under the effects of radio-frequency interference [PDF]
, 2016 ©2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new ...
Alonso Arroyo, Alberto +5 more
core +2 more sources