Results 21 to 30 of about 202,245 (252)

Evaluation of Ionospheric Delay Effects on Multi-GNSS Positioning Performance

open access: yesRemote Sensing, 2019
Ionospheric delay is a significant error source in multi-GNSS positioning. We present different processing strategies to fully exploit the ionospheric delay effects on multi-frequency and multi-GNSS positioning performance, including standard point ...
Ke Su, Shuanggen Jin, M. M. Hoque
doaj   +1 more source

Performance of Selected Ionospheric Models in Multi-Global Navigation Satellite System Single-Frequency Positioning over China

open access: yesRemote Sensing, 2019
Ionospheric delay as the major error source needs to be properly handled in multi-GNSS (Global Navigation Satellite System) single-frequency positioning and the different ionospheric models exhibit apparent performance difference.
Ahao Wang   +4 more
doaj   +1 more source

A Simple Approach to Determine Single-Receiver Differential Code Bias Using Precise Point Positioning

open access: yesSensors, 2023
In this study, a precise single-receiver differential code bias (DCB) estimation method using the precise point positioning (PPP) model is presented. The first step is to extract the high-precision ionospheric observations, including DCBs, based on the ...
Fenkai Zhang   +3 more
doaj   +1 more source

APPLICATION OF THE GLONASS CODE OBSERVATIONS FOR THE DESIGNATION OF COORDINATES OF AN AIRCRAFT IN FLIGHT TEST MODE: A CASE STUDY [PDF]

open access: yesScientific Journal of Silesian University of Technology. Series Transport, 2017
The aim of this article is to present the results of GLONASS positioning in kinematic mode in air navigation. The flight experiment was conducted at Dęblin Airfield on a Cessna 172 aircraft. The aircraft position was recovered on the basis of the single-
Kamil KRASUSKI, Janusz ĆWIKLAK
doaj   +1 more source

Precise Positioning Method of Moving Laser Point Cloud in Shield Tunnel Based on Bolt Hole Extraction

open access: yesRemote Sensing, 2022
Mobile laser scanning technology used for deformation detection of shield tunnel is usually two-dimensional, which is expanded into three-dimensional (3D) through mileage, resulting in low positioning accuracy.
Changqi Ji   +4 more
doaj   +1 more source

The Impact of Satellite Time Group Delay and Inter-Frequency Differential Code Bias Corrections on Multi-GNSS Combined Positioning

open access: yesSensors, 2017
We present quad-constellation (namely, GPS, GLONASS, BeiDou and Galileo) time group delay (TGD) and differential code bias (DCB) correction models to fully exploit the code observations of all the four global navigation satellite systems (GNSSs) for ...
Yulong Ge   +4 more
doaj   +1 more source

Tropospheric delay parameters from numerical weather models for multi-GNSS precise positioning [PDF]

open access: yesAtmospheric Measurement Techniques, 2016
The recent dramatic development of multi-GNSS (Global Navigation Satellite System) constellations brings great opportunities and potential for more enhanced precise positioning, navigation, timing, and other applications.
C. Lu   +6 more
doaj   +1 more source

A Single-Frequency Real-Time Lane-Level Positioning Method for Vehicle Safety

open access: yesIEEE Access, 2020
The integrity and accuracy of positioning are crucial factors in vehicle safety. This article proposes an enhanced real-time array calibration (ERAC) technique based on real-time array error calibration with the Beidou Navigation Satellite System (BDS ...
Jing Ji   +5 more
doaj   +1 more source

Crowdsensing location method of mining-induced seismicity based on the phone mobile sensor network

open access: yes工程科学学报, 2022
To improve the positioning accuracy of a mining-induced seismicity monitoring system, reduce the monitoring blind area, and reduce the monitoring cost, based on the distributed idea, this paper proposes a positioning method of mining-induced seismicity ...
Hao LUO   +4 more
doaj   +1 more source

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