Results 91 to 100 of about 3,904 (159)

PRELIMINARY ANALYSES OF BEIDOU SIGNAL-IN-SPACE ANOMALY SINCE 2013

open access: yes, 2016
As BeiDou navigation system has been operational since December 2012. There is an increasing desire to use multiple constellation to improve positioning performance. The signal-in-space (SIS) anomaly caused by the ground control and the space vehicle is
J. Ren, Y. Wu, W. Liu
core   +1 more source

The WRF Simulation Influence of Assimilating GNSS Water Vapor and Parameterization Schemes on Typhoon Rumbia

open access: yesAtmosphere
The Weather Research and Forecasting (WRF) model was used to simulate Typhoon Rumbia in this paper. The sensitivity experiments were conducted with 16 different parameterization combination schemes, including four microphysics (WSM6, WSM5, Lin, and ...
Li Li   +4 more
doaj   +1 more source

Enhancing BeiDou/GNSS integrity with minmax optimization

open access: yesPNAS Nexus
Abstract In navigation scenarios, integrity is a crucial metric for evaluating system availability, with improvements in integrity having implications for transportation, security, and surveillance. This article proposes a novel integrity monitoring strategy, termed the optimal advanced receiver autonomous integrity monitoring ...
Jingsong Qiu   +4 more
openaire   +2 more sources

A quality assessment of the GNSS systems Galileo and BeiDou [PDF]

open access: yes, 2019
Denne oppgaven gir et innblikk i de to nye GNSS-systemene, Galileo og BeiDou, som i undersøkelsesperioden ikke var fullt operative. Vi skal se at de er bygd opp noe ulikt i forhold til det vi allerede kjenner til, GPS og GLONASS.
Halle, Ole Jørgen
core  

Performance of GPS and Partially Deployed BeiDou for Real-Time Kinematic Positioning in Western Canada

open access: yes, 2015
China has completed the development of the first phase of its BeiDou satellite navigation system, which contains fourteen operational satellites at of the end of 2012.
Dou, Jingjing
core   +1 more source

Evaluation of a regional real-time precise positioning system based on GPS/BeiDou observations in Australia [PDF]

open access: yes, 2018
peer reviewedThe performance of real-time (RT) precise positioning can be improved by utilizing observations from multiple Global Navigation Satellite Systems (GNSS) instead of one particular system.
Yuan, Yunbin   +9 more
core   +1 more source

Instantaneous BeiDou–GPS attitude determination: A performance analysis

open access: yes, 2014
The advent of modernized and new global navigation satellite systems (GNSS) has enhanced the availability of satellite based positioning, navigation, and timing (PNT) solutions.
Teunissen, Peter   +2 more
core   +1 more source

Architecture design of BeiDou global navigation signals

open access: yesGeo-spatial Information Science
Navigation signals play a crucial role in determining the performance and user experience of Global Navigation Satellite System (GNSS). In recent years, GNSSs have been actively modernizing their signal architectures to meet the increasing demand for high precision, robustness, specialization, and internationalization services.
Shuren Guo, Chengeng Su, Feiren Lv
openaire   +2 more sources

Precise orbit and clock determination for BeiDou-3 experimental satellites with yaw attitude analysis [PDF]

open access: yes, 2018
\ua9 2017, Springer-Verlag GmbH Germany. Five new-generation BeiDou-3 experimental satellites, called BeiDou-3e, have been launched into inclined geosynchronous orbit (IGSO) and medium orbit (MEO) since March 2015.
Liu J, Guo J, Wang B, Zhao Q, Wang C
core  

Performance of Ground-Based Global Navigation Satellite System Precipitable Water Vapor Retrieval in Beijing with the BeiDou B2b Service

open access: yesRemote Sensing
The accurate measurement of water vapor is essential for research about and the applications of meteorology, climatology, and hydrology. Based on the BeiDou PPP-B2b service, real-time precipitable water vapor (PWV) can be retrieved with the precise point
Yunchang Cao   +5 more
doaj   +1 more source

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