Results 91 to 100 of about 13,896,765 (214)

Performance Assessment of Navigation Signals in Realistic Multipath Environments [PDF]

, 2008
A major error source within global navigation satellite systems, such as the Global Positioning System or the future European satellite navigation system Galileo, comes from multipath, the reception of additional signal replica due to reflections caused ...
Artaud, Geraldine, Krach, Bernhard
core  

Bed‐level tools for monitoring erosion and accretion patterns: Flume validation and field testing

Limnology and Oceanography: Methods, Volume 24, Issue 9, September 2026.
Abstract Monitoring short‐term changes in surface sediment elevation is fundamental to understanding erosion, transport, and deposition dynamics in shallow coastal environments. However, commonly used field approaches, such as horizontal markers, sediment erosion tables, subsurface sediment plates, or erosion pins, are not always cross‐validated under ...
Lucía Rodríguez‐Arias, Inés Mazarrasa, Beatriz Marin‐Diaz, Teresa Alcoverro, Barbara Ondiviela, Jordi F. Pagès, Eduardo Infantes   +6 more
wiley   +1 more source

GNSS signal acquisition in the presence of sign transitions [PDF]

, 2009
The next generation of Global Navigation Satellite Systems (GNSS), such as Galileo [1] and GPS modernization [2], will use signals with equal code and bit periods, which will introduce a potential sign transition in each segment of the signal processed ...
Kewen Sun, SUN, KEWEN, Lo Presti, Letizia, Fantino, Maurizio   +3 more
core  

Concept for an Integrated PNT-Unit for Maritime Applications [PDF]

, 2010
The provision of robust position, navigation and timing (PNT) information is a fundamental element of the e-Navigation initiative proposed by the International Maritime Organization (IMO).
Thoralf Noack, Ziebold, Ralf, Dai, Zhen, Engler, Evelin, Zhen Dai, Noack, Thoralf, Ralf Ziebold, Evelin Engler   +7 more
core   +1 more source

Modernization of GNSS, RNSS, and SBAS

Technologies
This review provides an extensive overview of the modernization of Global Navigation Satellite System (GNSS), Regional Navigation Satellite System (RNSS), and Satellite-Based Augmentation System (SBAS) up to 28 September 2025.
Krunoslav Špoljar, Mladen Zrinjski, Antonio Tupek, Karlo Stipetić   +3 more
doaj   +1 more source

An Arctic Field Campaign Using Stratospheric Balloons for Micro‐Dropsonde Deployment: Insights and Evaluation

Meteorological Applications, Volume 33, Issue 5, September/October 2026.
A 2025 field campaign, based in Iceland, successfully deployed micro‐dropsonde sensors from stratospheric balloons in the Arctic. Atmospheric profiles were retrieved from a variety of data‐sparse regions. The campaign demonstrates the feasibility and value of balloon‐borne systems for enhancing Arctic observation and forecasting capability.
Matthew Fry, Dawn Harrison, Jonny King
wiley   +1 more source

Statistical GNSS performance assessment as part of the ALEGRO Ground Based Augmentation System inside Research Harbour Rostock [PDF]

, 2009
In the Research Port Rostock the Institute of Communication and Navigation of the German Aerospace Center deployed and operates an experimental Ground Based Augmentation System (GBAS).
Gewies , Stefan, Engler, Evelin, Noack, Thoralf, Becker, Carsten, Klisch, Anja   +4 more
core  

Redundant multi-mode filter for a navigation system [PDF]

, 2007
An approach is introduced to the design of a multi-mode navigation filter to combine a low-cost skewed redundant inertial measurement unit (SRIMU) with a multifunctional GPS (MF-GPS) receiver in order to implement a fault-tolerant aircraft navigation ...
Jia, Huamin, Allerton, David J.
core   +1 more source

A Hybrid Drone SINS/GNSS Information Fusion Method Based on Attention-Augmented TCN in GNSS-Denied Environments

Remote Sensing
In the field of drone navigation systems, a high-precision positioning solution can be provided by an integrated strapdown inertial navigation system (SINS)/global navigation satellite system (GNSS).
Chuan Xu, Shuai Chen, Daxiang Zhao, Zhikuan Hou, Changhui Jiang   +4 more
doaj   +1 more source

Tracing Three Decades of Low Earth Orbit Satellite Communication Development: A Bibliometric and Main Path Analysis of Network Architectures, Protocol Evolution, and Emerging Intelligent Services

International Journal of Satellite Communications and Networking, Volume 44, Issue 5, Page 573-593, September/October 2026.
ABSTRACT Low Earth Orbit (LEO) satellite communication systems have evolved into a critical component of global broadband networks, enabling wide‐area connectivity, IoT services, and intelligent multilayer satellite–terrestrial integration. Despite rapid advancements in constellation deployment, routing mechanisms, resource management, and LEO–5G/6G ...
Wei‐Hao Su, Ya‐Chen Chuang, Long‐Sheng Chen   +2 more
wiley   +1 more source