Results 11 to 20 of about 97,722 (273)

Performance Evaluation of Single-Frequency Precise Point Positioning and Its Use in the Android Smartphone

open access: yesRemote Sensing, 2021
The opening access of global navigation satellite system (GNSS) raw data in Android smart devices has led to numerous studies on precise point positioning on mobile phones, among which single-frequency precise point positioning (SF-PPP) has become ...
Min Li   +6 more
doaj   +1 more source

Research on GNSS INS & GNSS/INS Integrated Navigation Method for Autonomous Vehicles: A Survey

open access: yesIEEE Access, 2023
Autonomous Vehicles have become the focus of research around the world. Meanwhile, the continuous development of various emerging technologies in recent years has paved the way for the realization of fully autonomous driving.
Yuan He, Jichuan Li, Junjie Liu
semanticscholar   +1 more source

Precise orbit determination for BDS satellites

open access: yesSatellite Navigation, 2022
Since the first pair of BeiDou satellites was deployed in 2000, China has made continuous efforts to establish its own independent BeiDou Navigation Satellite System (BDS) to provide the regional radio determination satellite service as well as regional ...
Qile Zhao   +6 more
doaj   +1 more source

A double sideband combined tracking method for Galileo E5 AltBOC signals

open access: yesSatellite Navigation, 2023
The Galileo navigation satellite system (Galileo) E5 Alternative Binary Offset Carrier (AltBOC) signal brings various challenges due to its complex modulation, wide bandwidth, and multi-peaked auto-correlation function.
Tongwen Fan   +4 more
doaj   +1 more source

Low-Cost GNSS and PPP-RTK: Investigating the Capabilities of the u-blox ZED-F9P Module

open access: yesItalian National Conference on Sensors, 2023
GNSS has become ubiquitous in high-precision applications, although the cost of high-end GNSS receivers remains a major obstacle for many applications.
U. Robustelli   +2 more
semanticscholar   +1 more source

A Comparison of a GNSS‐GIM and the IRI‐2020 Model Over China Under Different Ionospheric Conditions

open access: yesSpace 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

A Review on Multi-GNSS for Earth Observation and Emerging Applications

open access: yesRemote Sensing, 2022
Global Navigation Satellite System (GNSS) has drawn the attention of scientists and users all over the world for its wide-ranging Earth observations and applications.
Shuanggen Jin   +2 more
semanticscholar   +1 more source

Calibration of GRACE on-board accelerometers for thermosphere density derivation

open access: yesGeo-spatial Information Science, 2022
Low Earth Orbit satellite on-board accelerometers play an important role in improving our understanding of thermosphere density; however, the accelerometer-derived densities are subject to accelerometer calibration errors.
Min Li   +5 more
doaj   +1 more source

Factor graph optimization for GNSS/INS integration: A comparison with the extended Kalman filter

open access: yesNavigation, 2021
Factor graph optimization (FGO) recently has attracted attention as an alternative to the extended Kalman filter (EKF) for GNSS-INS integration.
W. Wen, Tim Pfeifer, Xiwei Bai, L. Hsu
semanticscholar   +1 more source

Semi-analytical assessment of the relative accuracy of the GNSS/INS in railway track irregularity measurements

open access: yesSatellite Navigation, 2021
An aided Inertial Navigation System (INS) is increasingly exploited in precise engineering surveying, such as railway track irregularity measurement, where a high relative measurement accuracy rather than absolute accuracy is emphasized.
Qijin Chen   +3 more
doaj   +1 more source

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