Results 11 to 20 of about 7,830 (211)

Introduction to BeiDou‐3 navigation satellite system

open access: yesNavigation, 2019
China's BeiDou navigation system (BDS) has evolved from the demonstration navigation satellite system (BDS-1) to the regional navigation satellite system (BDS-2). Now, the global BeiDou navigation system (BDS-3) is in construction and is proceeding well. The design and functions of BDS-3 are quite different from those of both BDS-1 and BDS-2.
Yuanxi Yang   +4 more
openaire   +3 more sources

Basic performance and future developments of BeiDou global navigation satellite system

open access: yesSatellite Navigation, 2020
The core performance elements of global navigation satellite system include availability, continuity, integrity and accuracy, all of which are particularly important for the developing BeiDou global navigation satellite system (BDS-3).
Yuanxi Yang, Yue Mao, Bijiao Sun
doaj   +2 more sources

Satellite Navigation Signal Authentication in GNSS: A Survey on Technology Evolution, Status, and Perspective for BDS

open access: yesRemote Sensing, 2023
As the Global Navigation Satellite System (GNSS) is widely used in all walks of life, the signal structure of satellite navigation is open, and the vulnerability to spoofing attacks is also becoming increasingly prominent, which will seriously affect the
Xiao Chen   +4 more
doaj   +1 more source

The space–time references of BeiDou Navigation Satellite System [PDF]

open access: yesSatellite Navigation, 2021
AbstractThe BeiDou Navigation Satellite System (BDS) is essentially a precise time measurement and time synchronization system for a large-scale space near the Earth. General relativity is the basic theoretical framework for the information processing in the master control station of BDS.
Chunhao Han   +3 more
openaire   +2 more sources

Research on Beidou and GPS dual satellite positioning algorithms for substation site positioning

open access: yesInternational Journal of Metrology and Quality Engineering, 2020
With the rapid development of global satellite navigation system technology, multi-mode satellite navigation positioning technology that can be compatible with multiple navigation systems at the same time is bound to become the future development trend ...
Feng Junjie   +3 more
doaj   +1 more source

China and outer space [PDF]

open access: yes, 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
core   +2 more sources

Helmert Variance Component Estimation for Multi-GNSS Relative Positioning [PDF]

open access: yes, 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
core   +2 more sources

BD-II NMA&SSI: An Scheme of Anti-Spoofing and Open BeiDou II D2 Navigation Message Authentication

open access: yesIEEE Access, 2020
Due to openness and lack of authentication, like other members of the Global Navigation Satellite System (GNSS) Club, BeiDou-II civilian navigation signals are vulnerable to all kinds of spoofing attacks.
Zhijun Wu, Yun Zhang, Rusen Liu
doaj   +1 more source

Accuracy Analysis of GNSS (GPS, GLONASS and BEIDOU) Obsevation For Positioning [PDF]

open access: yesE3S Web of Conferences, 2019
Global Navigation Satellite System called GNSS is a term used for the entire global navigation that already operate or are in the planning for the future. Some of the satellite that can be used are GPS (Global Positioning System) operated by USA, GLONASS
Khomsin   +3 more
doaj   +1 more source

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