Results 91 to 100 of about 18,773 (179)
Assessment of the Multipath Mitigation Effect of Vector Tracking in an Urban Environment [PDF]
, 2013 Today, smart mobiles play an important role in our daily life. Most of these devices are equipped with a navigation function based on GNSS positioning.
Groves, PD, Hsu, LT, Jan, SS
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IEEE Photonics JournalAs a wireless communication which combines illumination and communication, visible light communication (VLC) has attracted great attention. In indoor VLC systems, multiple illumination devices are commonly employed, forming a natural multi-input multi ...
Jia-Ning Guo, Jian Zhang
doaj +1 more source
A review of global navigation satellite and augmentation systems [PDF]
, 2019 The importance and application of global navigation satellite systems (GNSS) has never been greater; there is increasing demand for both commercial and government projects; indeed, owning and operating a GNSS facility has become a matter of national ...
Chatwin, Chris R, Lawal, Lasisi S
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GNSS Shadow Matching: The Challenges Ahead [PDF]
, 2015 GNSS shadow matching is a new technique that uses 3D mapping to improve positioning accuracy in dense urban areas from tens of meters to within five meters, potentially less.
Adjrad, M, Ellul, C, Groves, PD, Wang, L
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A centering correction method for GNSS antenna diversity theory and implementation using a software receiver [PDF]
, 2014 GPS is performing well in open sky situation. However, severe attenuation or blockage of signals by high buildings may leads to an insufficient number of received satellites.
Dai, Wujiao +5 more
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AtmosphereThe PIESAT-01 constellation is the world’s first multi-baseline distributed synthetic aperture radar (SAR) constellation with a “Cartwheel” formation.
Tian Zhang +7 more
doaj +1 more source
Modes dégradés résultant de l'utilisation multi constellation du GNSS
, 2010 Actuellement, on constate dans le domaine de la navigation, un besoin croissant de localisation par satellites. Apres une course a l'amelioration de la precision (maintenant proche de quelques centimetres grace a des techniques de lever d'ambiguite sur des mesures de phase), la releve du nouveau defi de l'amelioration de l'integrite du GNSS (GPS ...
openaire +2 more sources
Temporal Spectrum Analysis for Multi-Constellation Space Domain Awareness
Space Domain Awareness (SDA) system has different major aspects including continues and robust awareness from the network that is crucial for an efficient control over all actors in space. The observability of the space assets on the other hand requires efficient analysis on when and how observed space objects can be controlled.
Naslcheraghi, Mansour +1 more
openaire +2 more sources
Digital coding metamaterials with multi-modulation schemes and beam steering for intra-chip millimeter-wave connectivity. [PDF]
Sci RepShen Z, Taravati S, Yan J.
europepmc +1 more source
Impact of Satellite Clock Corrections and Different Precise Products on GPS and Galileo Precise Point Positioning Performance. [PDF]
Sensors (Basel)Kiliszek D, Korolczuk K.
europepmc +1 more source