Results 71 to 80 of about 74,212 (211)

Solutions to the technical limitations of GNSS for indoor localisation

, 2023
openLa localizzazione in ambienti indoor è oramai divenuta fondamentale in diversi ambiti come la sanità, l'istruzione, il commercio, l'intrattenimento, il trasporto e la logistica. L'utilizzo di tecnologie basate sul Global Navigation Satellite System
ZIGBUO, DANIEL YEBOAH
core  

The Four Key Challenges of Advanced Multisensor Navigation and Positioning [PDF]

, 2014
The next generation of navigation and positioning systems must provide greater accuracy and reliability in a range of challenging environments to meet the needs of a variety of mission-critical applications.
Martin, H, Jiang, Z, Henry Martin, Groves, PD, Wang, L, Lei Wang, Ziyi Jiang, Walter, D, Voutsis, K, Kimon Voutsis, Debbie Walter, Paul D Groves   +11 more
core   +1 more source

New constraints on the postglacial evolution of Lago Maggiore, Northern Italy

Journal of Quaternary Science, EarlyView.
ABSTRACT Lago Maggiore is situated in an overdeepened valley reach at the southern margin of the European Alps, and its thick sediment infill allows the reconstruction of the postglacial valley and lake evolution. We study here the sedimentary succession in the lower Ossola Valley, which is infilled by ~500 m of deposits. In a marginal position, a core
Lukas Gegg, Alexander Fülling, Andrew Greenwood, György Hetényi, F. Martin Hofmann, Giovanni Monegato, Jahir S. Rangel Herrera, Camille Schirra, Marco Venier, Othmar Müntener   +9 more
wiley   +1 more source

Integrated precise orbit determination for LEO constellation and BDS-3 MEO satellites using inter-satellite links and onboard BDS-3 observations

Satellite Navigation
By leveraging the high-precision spatial reference established with Global Navigation Satellite System (GNSS), we propose a low-ground-dependency and low-latency Precise Orbit Determination (POD) method employing onboard GNSS, Inter-Satellite Link (ISL ...
Geer Qin, Kecai Jiang, Min Li, Qile Zhao, Xin Xie, Youcun Wang, Chao Yang, Yubin Wang, Chuntao Chang   +8 more
doaj   +1 more source

A temporal-domain solar radiation pressure model for BDS-3 MEO orbit prediction

Geo-spatial Information Science
Orbit prediction (OP) for global navigation satellite system (GNSS) satellites is crucial for current location-based Internet of Things (IoT) applications.
Min Li, Yingxue Yan, Wenwen Li, Qile Zhao   +3 more
doaj   +1 more source

Late Quaternary lake filling and drying in northern Australia's largest freshwater lake

Journal of Quaternary Science, EarlyView.
ABSTRACT Lake Woods, Jurrkulu, is northern Australia's largest freshwater lake filled today in strong Indo–Australian summer monsoons (IASM) to maximum depths of ~5 m. On the western margins of the lake, two large arcuate ridges occur 20 to 40 m above the lake floor and inset within these are other mid‐elevation lake deposits, such as depositional ...
Tim J. Cohen, Zenobia Jacobs, Caitlyn Scobie, Sam Marx, William Reynolds, Matthew S. Forbes, Haidee Cadd, Xue Rui, Laura Mogensen, Alexandru Codilean, Réka H. Fülöp, Klaus M. Wilcken, Fabian Boesl, Alex F. Wall, Nicola Stromsoe   +14 more
wiley   +1 more source

Blind Adaptive Beamformer Based on Orthogonal Projections for GNSS [PDF]

, 2012
The quality of the ranging data provided by a global navigation satellite systems (GNSS) receiver largely depends on the synchronization error, that is, on the accuracy of the propagation time-delay estimation of the line-of-sight (LOS) signal.
Noll, Tobias G., Meurer, Michael, Antreich, Felix, Sgammini, Matteo, Kurz, Lothar   +4 more
core  

gnss-sdr/gnss-sdr: GNSS-SDR v0.0.13

, 2020
This is a maintenance release which includes bug fixes, compatibility with the most recent compiler versions, some code optimization and the addition of minor new features.
Gerald LaMountain, SergiSeguraMunoz, antonioramosdet, Zosoworld, Michael Dickens, marc-sales, Piyush Gupta, Bitsulia Dmitry, Javier Arribas, Dawei Sun, mmajoral, Marc L, Gabriel Araujo, lmne741, Damian Miralles, Luis Esteve, OSQZSS, Academias IT, Anthony Arnold, marabra, Álvaro Cebrián Juan, Carles Fernandez, Usman Haider, odrisci, Andrés Cecilia Luque, Sergey   +25 more
core   +1 more source

Dynamic Performance Enhancement of a High‐Agility Hypersonic Mechanical System via a Learning‐Augmented Robust Control Architecture

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT The design of control systems for high‐agility mechanical systems operating in extreme environments is a significant challenge in nonlinear dynamics. This paper addresses the complex dynamic control problem of a hypersonic interceptor, modeled as a multi‐input multi‐output (MIMO) mechanical system characterized by strong aerodynamic cross ...
Mohammad Mahdi Soori, Seyed Hossein Sadati   +1 more
wiley   +1 more source

Influence of Fracture Volumetric Intensity on Strength Anisotropy of Foliated Rock Masses: Insights From a Synthetic Rock Mass Modeling Approach

International Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.
ABSTRACT This paper presents a synthetic rock mass (SRM) methodology to investigate the influence of fracture volumetric intensity (P32$P_{32}$) on the strength anisotropy of foliated rock masses containing non‐persistent fracture sets. The approach integrates UAV‐based discontinuity mapping, discrete fracture network (DFN) modeling, and lattice‐spring
G. G. de Magalhães, P. P. Cacciari, L. Li   +2 more
wiley   +1 more source