Results 111 to 120 of about 11,603,365 (342)

Recent advances and perspectives for positioning and applications with smartphone GNSS observations

, 2020
There are a number of location-based services and applications which take advantage of GNSS (Global Navigation Satellite System). These include mobile applications run on ’smart’ devices, which support many personal activities and address the needs of ...
J. Paziewski
semanticscholar   +1 more source

Tackling ionospheric scintillation threat to GNSS in Latin America

Journal of Space Weather and Space Climate, 2011
Scintillations are rapid fluctuations in the phase and amplitude of transionospheric radio signals which are caused by small-scale plasma density irregularities in the ionosphere.
Monico Joao Francisco Galera, Bougard Bruno, Romano Vincenzo, Spogli Luca, Alfonsi Lucilla, De Franceschi Giorgiana, Hancock Craig, Elmas Zeynep, Forte Biagio, Aquino Marcio, Sreeja Vadakke Veettil, Wernik Andrzej W., Sleewaegen Jean-Marie, Cantó Andrea, Ferreira Da Silva Elcia   +14 more
doaj   +1 more source

A Fourier-Based Image Formation Algorithm for Geo-Stationary GNSS-Based Bistatic Forward-Looking Synthetic Aperture Radar

Sensors, 2019
A Geo-Stationary GNSS-based Bistatic Forward-Looking Synthetic Aperture Radar (GeoSta-GNSS-BFLSAR) system is a particular kind of passive bistatic SAR system.
Zhangfan Zeng, Zhiming Shi, Sainan Xing, Yongcai Pan   +3 more
doaj   +1 more source

On the use of GNSS for Automatic Detection of Attenuating Environments [PDF]

arXiv, 2020
When different radio applications share the same spectrum, the separation by attenuating material is a way to mitigate potential interference. The indoor restriction for WLAN devices in 5150-5350 MHz is an example for a regulatory measure that aims at having WLAN devices operating in an environment that provides sufficient attenuation to enable sharing
arxiv  

De Geer moraine internal architecture based on sedimentological and geophysical investigations and implications for ice‐marginal reconstructions

Boreas, EarlyView.
De Geer moraines may act as valuable ice‐marginal indicators; however, to date, their variable mode of formation has presented challenges for this utility. Here, we present sedimentological and ground penetrating radar data of DGMs located in southwest Finland.
Gwyneth E. Rivers, Robert D. Storrar, Antti E. K. Ojala, Joni Mäkinen, Camilla Holmroos, Naomi Holmes   +5 more
wiley   +1 more source

Open-Source Factor Graph Optimization Package for GNSS: Examples and Applications [PDF]

arXiv
State estimation methods using factor graph optimization (FGO) have garnered significant attention in global navigation satellite system (GNSS) research. FGO exhibits superior estimation accuracy compared with traditional state estimation methods that rely on least-squares or Kalman filters.
arxiv  

Relative sea‐level trends in southern Norway during the last millennium

Boreas, EarlyView.
Relative sea level in southern Norway has been falling since c. 7000 cal. yr BP, but modern tide gauge data show rising relative sea level since at least 1960 CE. In this study, peat cores from a shallow coastal basin were analysed, using a multiproxy approach, to reconstruct relative sea level trends over the last millennium and to identify the onset ...
Max Holthuis, F. Chantel Nixon, Malin E. Kylander, Willem G. M. van der Bilt, Isabel Hong, Kristen M. Joyse, Thomas R. Lakeman, Jake Martin, Maria Peter, Simon Solheim Holme, Benjamin P. Horton   +10 more
wiley   +1 more source

Verification of quantitative requirements for GNSS-based railway applications [PDF]

, 2010
H. Mocek, Aleš Filip, L Bazant
openalex   +1 more source

Cycle Slip Detection and Correction Methods with Time-Differenced Model for Single Frequency GNSS Applications

, 2013
Cycle slips in Global Navigation Satellite System (GNSS) signal tracking are significant error sources for carrier phase based GNSS applications, therefore it is necessary to detect and correct them.
S. Fujita, S. Saito, T. Yoshihara
semanticscholar   +1 more source

Efficient 3D robotic mapping and navigation method in complex construction environments

Computer-Aided Civil and Infrastructure Engineering, EarlyView.
Abstract Recent advancements in construction robotics have significantly transformed the construction industry by delivering safer and more efficient solutions for handling complex and hazardous tasks. Despite these innovations, ensuring safe robotic navigation in intricate indoor construction environments, such as attics, remains a significant ...
Tianyu Ren, Houtan Jebelli
wiley   +1 more source