A multi-sensor fusion framework for autonomous robots localization in repetitive environments per Wu, Zhenyu

“…It is generally recognized that the widely utilized Global Navigation Satellite System (GNSS) signals may be severely challenged or even unavailable in enclosed or partially enclosed repetitive and ambiguous environments (e.g., offices, hotels, hospitals, airports, industrial warehouses, container seaports). …”
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A preliminary study on UAS vertical NSE analysis in urban-like environments per Deng, Chao, Wang, John Chung-Hung, Low, Kin Huat

“…This is especially noticeable in urban environment where global navigation satellite system (GNSS) positioning capability are affected by influencing factors such as signal blockage and multipath errors caused by surrounding objects like buildings, trees, and other obstructions [1]. …”
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Simultaneous magnitude and slip distribution characterization from high-rate GNSS using deep learning: case studies of the 2021 Mw 7.4 Maduo and 2023 Turkey doublet events per Cui, Wenfeng, Chen, Kejie, Wei, Guoguang, Lyu, Mingzhe, Zhu, Feng

“…In this study, based on 18 000 scenario ruptures ranging from Mw 6.4 to Mw 8.3 and corresponding synthetic high-rate Global Navigation Satellite System (HR-GNSS) waveforms, we developed a multibranch neural network framework, the continental large earthquake agile response (CLEAR), to simultaneously determine the magnitude and slip distributions. …”
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Similarities and differences between natural and simulated slow earthquakes per Gualandi, A., Zilio, Luca Dal, Faranda, D., Mengaldo, G.

“…We use spatio-temporal slip potency rate data derived from Global Navigation Satellite System (GNSS) position time series in the Cascadia subduction zone and numerical simulations intended to reproduce their pulse-like behavior and scaling laws. …”
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GNSS-based relative navigation for LEO nanosatellite laser communications per Grenfell, Peter W.(Peter William)

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Modernizing and expanding the NASA Space Geodesy Network to meet future geodetic requirements per Merkowitz, S. M, Bolotin, S., Elosegui, P., Esper, J., Gipson, J., Hilliard, L., Himwich, E., Hoffman, E. D, Lakins, D. D, Lamb, R. C, Lemoine, F. G, Long, J. L, McGarry, J. F

“…Abstract NASA maintains and operates a global network of Very Long Baseline Interferometry (VLBI), Satellite Laser Ranging (SLR), and Global Navigation Satellite System ground stations as part of the NASA Space Geodesy Program. …”
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High-resolution ITU-R cloud attenuation model for satellite communications in tropical region per Yuan, Feng, Lee, Yee Hui, Meng, Yu Song, Manandhar, Shilpa, Ong, Jin Teong

“…In this paper, the precipitable water vapor (PWV) data from Global Navigation Satellite System (GNSS) is introduced into ITU-R cloud attenuation model for higher temporal and spatial resolution for a tropical region. …”
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A 5G/GNSS integrated positioning method per Jin, Chengming, Tay, Wee Peng, Zhao, Kai, Ling, Keck Voon, Sin, Kok Kee

“…The emergence of the fifth generation (5G) positioning provides a promising opportunity to augment global navigation satellite system (GNSS) in some GNSS-challenged environments. …”
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Salient Midlatitude Ionosphere‐Thermosphere Disturbances Associated With SAPS During a Minor but Geo‐Effective Storm at Deep Solar Minimum per Aa, Ercha, Zhang, Shun‐Rong, Erickson, Philip J., Coster, Anthea J., Goncharenko, Larisa P., Varney, Roger H., Eastes, Richard

“…Several prominent storm-time disturbances and associated electrodynamics/dynamics were identified and comprehensively analyzed using Millstone Hill and Poker Flat incoherent scatter radar measurements, Fabry-Perot interferometer data, total electron content data from Global Navigation Satellite System observations, and thermospheric composition O/N2 data from the Global-scale Observations of Limb and Disk mission. …”
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The European Satellite Navigation Program : policy analysis and recommendations for the future per Escudero San José, Laura

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LaIF : a lane-level self-positioning scheme for vehicles in GNSS-denied environments per Rabiee, Ramtin, Zhong, Xionghu, Yan, Yongsheng, Tay, Wee Peng

“…However, accurate positioning (e.g., with lane-level accuracy) is very difficult to obtain due to the lack of measurements with high confidence, especially in an environment without full access to a global navigation satellite system (GNSS). In this paper, a novel information fusion algorithm based on a particle filter is proposed to achieve lane-level tracking accuracy under a GNSS-denied environment. …”
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Anchor-free multi-level self-localization in ad-hoc networks per Song, Yang, Bajaj, Ian, Rabiee, Ramtin, Tay, Wee Peng

“…The proposed system can work without anchor nodes and thus it can be deployed in the environments such as urban canyon, inside multi-story buildings, airports, and underground shopping malls where access to anchors or Global Navigation Satellite System (GNSS) is limited or prohibitive. …”
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WHU-helmet: a helmet-based multisensor SLAM dataset for the evaluation of real-time 3-D mapping in large-scale GNSS-denied environments per Li, Jianping, Wu, Weitong, Yang, Bisheng, Zou, Xianghong, Yang, Yandi, Zhao, Xin, Dong, Zhen

“…Real-time 3-D mapping of large-scale global navigation satellite system (GNSS)-denied environments plays an important role in forest inventory management, disaster emergency response, and underground facility maintenance. …”
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GNSS radio occultation technique for atmospheric refractivity profiling and planetary boundary layer height detection per Han, Bo

“…Global Navigation Satellite System (GNSS) Radio Occultation (RO) is an atmospheric remote sensing method attracting extensive attention with increasing number of RO missions. …”
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Ionospheric Bow Waves and Perturbations Induced by the 21 August 2017 Solar Eclipse per Vierinen, Juha, Zhang, Shun-Rong, Erickson, Philip J, Goncharenko, Larisa, Coster, Anthea J, Rideout, William C

“…During the 21 August 2017 eclipse, high fidelity and wide coverage ionospheric observations provided for the first time an oversampled set of eclipse data, using a dense network of Global Navigation Satellite System receivers at ∼2,000 sites in North America. …”
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Investigating impacts of implementing NEW road pricing system per Chong, Ke Chun

“…Herein, the Land Transport Authority (LTA) is now implementing the Global Navigation Satellite System (GNSS), which allows distance-based charging. …”
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A tightly coupled integration approach for cooperative positioning enhancement in DSRC vehicular networks per Yan, Yongsheng, Bajaj, Ian, Rabiee, Ramtin, Tay, Wee Peng

“…However, existing Global Navigation Satellite System (GNSS) based solutions suffer from positioning performance degradation in challenging environments, such as urban canyons and tunnels. …”
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MuCoGraph: a multi-scale constraint enhanced pose-graph framework for MLS point cloud inconsistency correction per Li, Yuhao, Zou, Xianghong, Li, Tian, Sun, Sihan, Wang, Yuan, Liang, Fuxun, Li, Jiangping, Yang, Bisheng, Dong, Zhen

“…The position consistency of mobile laser scanning (MLS) point clouds is crucial for large-scale applications, and is normally guaranteed by the global navigation satellite system (GNSS) and high-precision inertial measurement unit (IMU) in the data acquisition. …”
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Optimal selection of elevation-dependent stochastic models for real-time PPP with GPS/Galileo/BDS per Liu, Peng, Ling, Keck Voon, Qin, Honglei, Jiang, Xue, Lu, Jun

“…Subsequently, the real-time statistical experiments, which are based on 46 reference stations on the Multi-Global Navigation Satellite System Experiment (MGEX) in static and simulated kinematic modes under GPS/Galileo/BDS during continuous 21 days, are statistically analyzed in terms of the positioning accuracy, precision, and convergence. …”
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Assessment of the impact of FORMOSAT‐7/COSMIC‐2 GNSS RO observations on midlatitude and low‐latitude ionosphere specification : observing system simulation experiments using ensemb... per Hsu, C.-T., Matsuo, T., Yue, X., Fuller-Rowell, T., Ide, K., Liu, J.-Y., Fang, Tzu-Wei

“…The Formosa Satellite‐7/Constellation Observing System for Meteorology, Ionosphere, and Climate‐2 (FORMOSAT‐7/COSMIC‐2) Global Navigation Satellite System radio occultation (RO) payload can provide global observations of slant total electron content (sTEC) with an unprecedentedly high spatial temporal resolution. …”
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