Results 11 to 20 of about 22,006,798 (284)

Precise positioning in real-time using GPS-RTK signal for visually impaired people navigation system [PDF]

open access: yes, 2010
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University, 24/9/2010.This thesis presents the research carried out to investigate and achieve highly reliable and accurate navigation system of guidance for visually ...
Al-Salihi, Nawzad Kameran
core   +7 more sources

Global navigation satellite system [PDF]

open access: yes, 2017
The last few years have shown an increased interest in the commercialization of the global navigation satellite system (GNSS), which is often referred to as the global positioning system (GPS) in various applications. A GPS system uses spread spectrum signals-binary phase-shift keying (BPSK)-emitted from satellites in space for position and time ...
John Walker, Joseph L. Awange
  +5 more sources

Adaptive filtering applications to satellite navigation [PDF]

open access: yes, 2010
PhDDifferential Global Navigation Satellite Systems employ the extended Kalman filter to estimate the reference position error. High accuracy integrated navigation systems have the ability to mix traditional inertial sensor outputs with navigation ...
Zhahir, Md Amzari
core   +4 more sources

Camp Century: Global Navigation Satellite System measurements

open access: yes, 2022
Global Navigation Satellite System (GNSS) measurements collected at Camp Century. This includes the CEN-GPS station, which continuously recorded during 2019-2021.
Jakobsen, Jakob, Colgan, William
core   +1 more source

A bagging tree-based pseudorange correction algorithm for global navigation satellite system positioning in foliage canyons

open access: yesInternational Journal of Distributed Sensor Networks, 2021
Global navigation satellite system is indispensable to provide positioning, navigation, and timing information for pedestrians and vehicles in location-based services.
Fan Qin   +3 more
doaj   +1 more source

Evaluating and improving worldwide implementation of future air navigation systems [PDF]

open access: yes, 2001
Air traffic congestion problems in many areas of the world are well known and have been highly publicised in recent years. This airspace dilemma, which results in delays and other undesirable knock-on effects, is escalating at a phenomenal rate and ...
Whelan, Conor
core   +7 more sources

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

Predicting Long-Term Stability of Precise Oscillators under Influence of Frequency Drift

open access: yesSensors, 2018
High-performance oscillators, atomic clocks for instance, are important in modern industries, finance and scientific research. In this paper, the authors study the estimation and prediction of long-term stability based on convex optimization techniques ...
Weiwei Cheng, Guigen Nie
doaj   +1 more source

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

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