Results 31 to 40 of about 228,586 (380)

A Police and Insurance Joint Management System Based on High Precision BDS/GPS Positioning

open access: yesSensors, 2018
Car ownership in China reached 194 million vehicles at the end of 2016. The traffic congestion index (TCI) exceeds 2.0 during rush hour in some cities. Inefficient processing for minor traffic accidents is considered to be one of the leading causes for ...
Wenwei Zuo   +4 more
doaj   +1 more source

Performance evaluation of multi-GNSSs navigation in super synchronous transfer orbit and geostationary earth orbit

open access: yesSatellite Navigation, 2021
The autonomous navigation of the spacecrafts in High Elliptic Orbit (HEO), Geostationary Earth Orbit (GEO) and Geostationary Transfer Orbit (GTO) based on Global Navigation Satellite System (GNSS) are considered feasible in many studies.
Tao Shi, Xuebin Zhuang, Liwei Xie
doaj   +1 more source

Accurate and automatic NOAA-AVHRR image navigation using a global contour matching approach [PDF]

open access: yes, 2000
The problem of precise and automatic AVHRR image navigation is tractable in theory, but has proved to be somewhat difficult in practice. The authors' work has been motivated by the need for a fully automatic and operational navigation system capable of ...
Eugenio, F   +4 more
core   +1 more source

Global Navigation Satellite Systems

open access: yesGeographic Information Science & Technology Body of Knowledge
This is a definition of Global Navigation Satellite Systems in the Elgar Concise Encyclopedia of Space Law. Providing a comprehensive and timely overview of the evolving landscape of space law, this Encyclopedia emphasises the importance of international collaboration in maintaining outer space as a peaceful domain.
Mike Tooley, David Wyatt
  +5 more sources

Comparison of Satellite Repeat Shift Time for GPS, BDS, and Galileo Navigation Systems by Three Methods

open access: yesAlgorithms, 2019
The characteristic of the satellite repeat shift time can reflect the status of the satellite operation, and is also one of the key factors of the sidereal filtering multipath correction.
Yanxi Yang, Jinguang Jiang, Mingkun Su
doaj   +1 more source

Earth and Rock-Filled Dam Monitoring by High-Resolution X-Band Interferometry: Gongming Dam Case Study

open access: yesRemote Sensing, 2019
Middle-sized earth- and rock-filled dams with clay cores continue to settle by approximately 0.5⁻1.5% of their height for approximately 1⁻3 years after their construction phase.
Tao Li   +8 more
doaj   +1 more source

CONCEPTUAL DESIGN OF MONITORING AND CONTROL SUBSYSTEM FOR GNSS GROUND STATION [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2007
The Global Navigation Satellite System (GNSS) becomes more important and is applied to various systems. Recently, the Galileo navigation system is being developed in Europe.
Seongkyun Jeong   +4 more
doaj   +1 more source

The development of GPS navigation systems in civil aircraft [PDF]

open access: yes, 2013
The industry of civil aviation is developing in a fast manner to occupy the increasing needs for a fast, safe and comfortable transportation. To achieve these needs, some effective programs, plans, and systems designs are required.
Gomes, Chandima   +3 more
core   +1 more source

Integrated GNSS Attitude Determination and Positioning for Direct Geo-Referencing

open access: yesSensors, 2014
Direct geo-referencing is an efficient methodology for the fast acquisition of 3D spatial data. It requires the fusion of spatial data acquisition sensors with navigation sensors, such as Global Navigation Satellite System (GNSS) receivers.
Nandakumaran Nadarajah   +2 more
doaj   +1 more source

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

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