Results 71 to 80 of about 19,876 (292)
Navigation Performance of Global Navigation Satellite Systems in the Space Service Volume [PDF]
This paper extends the results I reported at this year's ION International Technical Meeting on multi-constellation GNSS coverage by showing how the use of multi-constellation GNSS improves Geometric Dilution of Precision (GDOP).
Force, Dale A.
core +1 more source
A Portfolio Approach to NLOS and Multipath Mitigation in Dense Urban Areas [PDF]
, 2013 Non-line-of-sight (NLOS) reception and multipath interference are major causes of poor GNSS positioning accuracy in dense urban environments. They are commonly grouped together. However, both the mechanisms by which they cause position errors and many of
Groves, PD, Jiang, Z, Rudi, M, Strode, P
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Upper-bounding bias errors in satellite navigation
, 2014 A satellite navigation system for a safety critical application is required to provide an integrity alert of any malfunction; the probability that a navigation positioning error exceeds a given alert limit without an integrity alert is required to be ...
Iwamoto, Takashi
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Advanced Engineering Materials, EarlyView.The wettability of aluminum droplets (Al) on different copper substrates (Cu), where liquid Al spreads on solid Cu surfaces to form a liquid–solid interface, is studied numerically and experimentally. The experimental and numerical results show good agreement in the fast‐spreading regime.
Shan Lyu +8 more
wiley +1 more source
Mass-Market Receiver for Static Positioning: Tests and Statistical Analyses [PDF]
, 2011 Nowadays, there are several low cost GPS receivers able to provide both pseudorange and carrier phase measurements in the L1band, that allow to have good realtime performances in outdoor condition.
Cina, Alberto, Marucco, G., Piras, Marco
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GNSS-based Location Determination System Architecture for railway performance assessment in presence of local effects [PDF]
, 2018 GNSS plays a strategic role on the introduction of the Virtual Balise functionality and the train integrity. Thanks to GNSS, it could be possible to realize cost effective solutions to increase the safety in the regional lines, where the traffic density ...
Bonenberg, Lukasz +9 more
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Advanced Engineering Materials, EarlyView.This study demonstrates how optimizing laser power, scanning speed, and hatching distance in laser powder bed fusion can boost the productivity of Inconel 718 manufacturing by up to 29% while maintaining mechanical integrity. The work delivers a validated process window and cost–time analysis, offering industry‐ready guidelines for efficient additive ...
Amir Behjat +7 more
wiley +1 more source
Topology control of satellite networks for multi-layer and multi-domain mega-constellation
Tongxin xuebaoIn view of the time-varying nature of the single-satellite mission in the mega constellation, the resulting overload, the vulnerability of a single node, and the high reliability requirements of the network control plane, the topology control of ...
XU Xiaofan +5 more
doaj +2 more sources
Towards Defect Phase Diagrams: From Research Data Management to Automated Workflows
Advanced Engineering Materials, EarlyView.A research data management infrastructure is presented for the systematic integration of heterogeneous experimental and simulation data required for defect phase diagrams. The approach combines openBIS with a companion application for large‐object storage, automated metadata extraction, provenance tracking and federated data access, thereby supporting ...
Khalil Rejiba +5 more
wiley +1 more source
A Novel VLSI Architecture for Multi-Constellation and Multi-Frequency GNSS Acquisition Engine
IEEE Access, 2019 This paper proposes a novel VLSI architecture of GNSS acquisition engine based on short-time correlation combined with an FFT scheme. The architecture supports multi-constellation systems and multi-frequency satellite signals flexibly by the manner of ...
Yuheng Yang, Xiaohui Ba, Jie Chen
doaj +1 more source