Results 11 to 20 of about 12,661 (218)
Characterization and Performance Assessment of BeiDou-2 and BeiDou-3 Satellite Group Delays
NAVIGATION: Journal of the Institute of Navigation, 2022 Based on one year of data, a comprehensive assessment of broadcast group delays and differential code biases (DCBs) from network solutions is presented for all open BeiDou signals. Daily DCB estimates exhibit a precision of 0.1 ns, which also places a limit on long-term variations of the satellite group delays.
Montenbruck, Oliver +3 more
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, 2012 China’s space program began in the 1950s as part of its nuclear weapons program. Today it spans both civilian and military requirements, as well as bolstering national prestige: China is only the third country, after the United States and Russia, to ...
Dellios, Rosita
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The BeiDou Navigation Message [PDF]
Journal of Global Positioning Systems, 2013 The article provides an overview of the BeiDou navigation message contents and highlights its specific communalities and differences with respect to other GNSS constellations. Making use of data collected by multi-GNSS monitoring stations of the MGEX and CONGO networks, the quality of BeiDou broadcast ephemerides is assessed through the analysis of ...
Montenbruck, Oliver +1 more
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Validation of BeiDou Observations [PDF]
Journal of Applied Geodesy, 2014 AbstractThis study presents validation of BeiDou measurements in un-differenced standalone mode and experimental results of its application for real data. A reparameterized form of the unknowns in a geometry-free observation model was used. Observations from each satellite are independently screened using a local modeling approach.
El-Mowafy, Ahmed, Hu, C.
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La nuova rete GNSS multicostellazione dell'Umbria
GEOmedia, 2019 The GPSUMBRIA permanent station network (Umbria region, central Italy), renewed in all its components, is the first GNSS network in Italy and among the first in the world to provide positioning services on four constellations (GPS, GLONASS, GALILEO and ...
Fabio Radicioni, Aurelio Stoppini
doaj +3 more sources
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
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ANALYSIS OF POSITIONING DEVIATION BETWEEN BEIDOU AND GPS BASED ON NATIONAL REFERENCE STATIONS IN CHINA [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2021 In order to probe into the characteristics of positioning deviation between Beidou Navigation Satellite System (Beidou) and global positioning system (GPS), and investigate possible contribution of Beidou data to refinement of global coordinate system ...
M. Chen, Q. Zhang, Q. Zhang
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Synthetic Meta-Signal Observations: The Beidou Case
Sensors, 2023 A Global Navigation Satellite System (GNSS) meta-signal is obtained when two or more side-band components from different frequencies are jointly processed as a single entity. This requires advanced signal processing techniques able to cope with the subcarrier, generated by the interaction of the side-band components, and handle possibly multi-peaked ...
Daniele Borio, Ciro Gioia
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Sensors, 2020 The secondary modulation with the Neumann-Hoffman code increases the possibility of bit sign transition. Unlike other GNSS signals, there is no pilot component for synchronization in BeiDou B1/B3 signals, which increases the complexity in acquisition.
Menghuan Yang +4 more
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Reports on Geodesy and Geoinformatics, 2021 The problem involving the monitoring of surface ground movements in post-mining areas is particularly important during the period of mine closures. During or after flooding of a mine, mechanical properties of the rock mass may be impaired, and this may ...
Sokoła-Szewioła Violetta +1 more
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