Results 21 to 30 of about 3,334 (205)

Analysis of Post-Processed Pseudorange-Based Point Positioning with Different Data Sources for the Current Galileo Constellations [PDF]

open access: yesSensors
The Galileo satellite navigation system now provides initial services. With further satellite launches, the performance of Galileo will gradually improve, and new services will be introduced. This study aims to provide a comprehensive analysis of Galileo
Jiantao Zhang, Weiwei Li
doaj   +2 more sources

Study on the Design of Broadcast Ephemeris Parameters for Low Earth Orbit Satellites

open access: goldRemote Sensing
The integration of low Earth orbit (LEO) satellite constellations into the Global Navigation Satellite System (GNSS) has emerged as a prominent research focus, as LEO satellites can significantly enhance the precision of GNSS positioning, navigation, and
Dongzhu Liu   +4 more
doaj   +2 more sources

Signal in Space Error and Ephemeris Validity Time Evaluation of Milena and Doresa Galileo Satellites [PDF]

open access: yesSensors, 2019
In August 2016, Milena (E14) and Doresa (E18) satellites started to broadcast ephemeris in navigation message for testing purposes. If these satellites could be used, an improvement in the position accuracy would be achieved.
Umberto Robustelli   +2 more
doaj   +2 more sources

Accuracy Evaluation of Broadcast Ephemeris for BDS-2 and BDS-3 [PDF]

open access: green, 2021
Abstract The BDS-3 system was completed in July 2020 and began to provide services to users around the world. The inspection of its operation, especially the detailed evaluation of the orbit, clock error, TGD and other indicators, plays an important role in the subsequent positioning.
Hao Jun Jian, Yishi Wang, Shoujian Zhang
openalex   +4 more sources

A 16-parameter GEO Broadcast Ephemeris [PDF]

open access: yesJournal of Geodesy and Geoinformation Science, 2018
Currently, the broadcast ephemerides used in GEOs are same as those of the MEOs and IGSOs in the BeiDou navigation constellation. However, a trade-off strategy, i.e.
Zhongkai ZHANG,Lan DU,Li LIU,Feng HE,Yu LU,Peiyuan ZHOU
doaj   +1 more source

A Real-Time Detection Method for BDS Signal in Space Anomalies [PDF]

open access: yesSensors, 2019
Signal In Space (SIS) anomalies in satellite navigation systems can degrade satellite-based navigation and positioning performance. The occurrence of SIS anomalies from the BeiDou navigation satellite System (BDS) may be more frequent than for the Global
Chun Cheng   +3 more
doaj   +2 more sources

Broadcast Ephemeris Model of the BeiDou Navigation Satellite System [PDF]

open access: diamondJOURNAL OF ENGINEERING SCIENCE AND TECHNOLOGY REVIEW, 2017
Xie Xiao-gang, Mingquan Lu
openalex   +2 more sources

An Accuracy Analysis on the Broadcast Ephemeris and IGS RTS

open access: goldThe Journal of Advanced Navigation Technology, 2016
Mingyu Kim, Jeongrae Kim
openalex   +4 more sources

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