Results 31 to 40 of about 266,964 (192)

GSTAR: an innovative software platform for processing space geodetic data at the observation level

open access: yesSatellite Navigation, 2023
To meet the demands for the data combination with multiple space geodetic techniques at the observation level, we developed a new software platform with high extensibility and computation efficiency, named space Geodetic SpatioTemporal data Analysis and ...
Chuang Shi   +11 more
doaj   +1 more source

The Impact of Estimating High-Resolution Tropospheric Gradients on Multi-GNSS Precise Positioning

open access: yesSensors, 2017
Benefits from the modernized US Global Positioning System (GPS), the revitalized Russian GLObal NAvigation Satellite System (GLONASS), and the newly-developed Chinese BeiDou Navigation Satellite System (BDS) and European Galileo, multi-constellation ...
Feng Zhou   +6 more
doaj   +1 more source

Kinematic PPP Using Mixed GPS/Glonass Single-Frequency Observations

open access: yesArtificial Satellites, 2019
Nowadays, Precise Point Positioning (PPP) is a very popular technique for Global Navigation Satellite System (GNSS) positioning. The advantage of PPP is its low cost as well as no distance limitation when compared with the differential technique.
Mostafa Hamed, Ashraf Abdallah, A. Farah
semanticscholar   +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 Parallel Approach for Multi-GNSS Ultra-Rapid Orbit Determination

open access: yesRemote Sensing, 2021
Global Navigation Satellite System (GNSS) ultra-rapid orbit is critical for geoscience and real-time engineering applications. To improve the computational efficiency and the accuracy of predicted orbit, a parallel approach for multi-GNSS ultra-rapid ...
Chunhua Jiang   +5 more
doaj   +1 more source

Consideration of GLONASS Inter-Frequency Code Biases in Precise Point Positioning (PPP) International Time Transfer

open access: yesApplied Sciences, 2018
International time transfer based on Global Navigation Satellite System (GLONASS) precise point positioning (PPP) is influenced by inter-frequency code biases (IFCBs) because of the application of frequency division multiple access technique.
Yulong Ge   +5 more
doaj   +1 more source

A Determination of the motion based on GNSS observations between 2000 and 2021 by using the IGS points on the Polar Regions

open access: yesGeodesy and Cartography, 2022
People are fascinated today more than ever by the polar regions of the Earth. One reason for this is that wide expanses of the Arctic and Antarctic have not been explored and are therefore still viewed as frontier regions. Another is that they both have
Atınç Pırtı
doaj   +1 more source

Investigation on GPS/GLONASS data processing: modelling and numerical validation [PDF]

open access: yes, 2010
As GLONASS has gradually been developed towards its full constellation, it becomes clear that GLONASS will bring significant benefits to worldwide geodetic applications of global satellite navigation systems.
Wang, Junqiang
core   +1 more source

Decadal evolution of GPS, GLONASS, and Galileo mean orbital elements

open access: yesGPS Solutions
We examine the decadal evolution of GPS, GLONASS, and Galileo satellite orbital elements, including the semi-major axis, inclination, eccentricity, right ascension of the ascending node, and the argument of perigee.
R. Zajdel, K. Sośnica
semanticscholar   +1 more source

Differential Code Bias Estimation using Multi-GNSS Observations and Global Ionosphere Map [PDF]

open access: yes, 2014
Measurements of Global Navigation Satellite System (GNSS) receivers are affected by systematic offsets re- lated to group and phase delays of the signal generation and processing chain.
Hauschild, André   +2 more
core   +1 more source

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