Results 61 to 70 of about 2,307 (194)

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

Advances in CO2 Capture Materials: From Strategies to CO2‐Based Fertilizers for a Sustainable Future

Carbon Neutralization, Volume 4, Issue 6, November 2025.
Revolutionizing agriculture: Unlocking the power of CO₂ fertilizers for enhanced plant growth and sustainable farming. ABSTRACT The rising carbon dioxide (CO2) concentrations in the atmosphere, primarily attributed to anthropogenic activities, have led to unprecedented environmental challenges like climate change and global warming.
Safyan Akram Khan, Shakeel Ahmed, Shahid Ali, Faizah Altaf   +3 more
wiley   +1 more source

Evaluating GNSS integrity augmentation techniques for UAS sense-and-avoid [PDF]

, 2015
Global Navigation Satellite Systems (GNSS) far exceed the navigation accuracies provided by other state-of-the-art sensors for aerospace applications. This can support the development of low-cost and high performance navigation and guidance architectures
Hill, Chris, Moore, Terry, Ramasamy, Subramanian, Sabatini, Roberto   +3 more
core  

Assessing avionics-based GNSS integrity augmentation performance in UAS mission- and safety-critical tasks [PDF]

, 2015
The integration of Global Navigation Satellite System (GNSS) integrity augmentation functionalities in Unmanned Aerial Systems (UAS) has the potential to provide an integrity-augmented Sense-and-Avoid (SAA) solution suitable for cooperative and non ...
Hill, Chris, Moore, Terry, Ramasamy, Subramanian, Sabatini, Roberto   +3 more
core   +1 more source

Modeling of Ionospheric Delay for SBAS Using Spherical Harmonics Functions [PDF]

TransNav, 2013
In SBAS (satellite-based augmentation system), it is important to estimate ionospheric delay accurately to guarantee user's accuracy and integrity. Grid based ionospheric models are generally used to estimate ionospheric delay for SBAS.
Deokhwa Han, Ho Yun, Changdon Kee
doaj   +1 more source

Insights Into Seismic‐Induced Ionospheric Perturbation Following the 2025 Myanmar Earthquake

Journal of Geophysical Research: Space Physics, Volume 130, Issue 11, November 2025.
Abstract A major earthquake with a magnitude of MW = 7.7, followed by several aftershocks, occurred in Mandalay, Myanmar, on 28 March 2025. This study aims to report on the co‐seismic ionospheric disturbances caused by the event, based on a multi‐instrument approach that was adopted to examine co‐seismic effects.
Trisani Biswas, Mefe Moses, Haris Haralambous, Md. Golam Mostafa   +3 more
wiley   +1 more source

EGNOS based virtual reference stations [PDF]

, 2008
We propose the use of the European Geostationary Navigation Overlay Service (EGNOS) data - real time on line data provided by SISNeT - to develop Virtual Reference Stations and, thus, increase the quality of the Position, Velocity an Time (PVT) solution ...
Malheiro, Benedita, Soares, Manuel Gonçalves   +1 more
core  

A GIVE Prediction Method in SBAS Based on GAT‐TCN

Space Weather, Volume 23, Issue 11, November 2025.
Abstract A Grid Ionospheric Vertical Error (GIVE) prediction model based on GAT‐TCN is proposed in this paper. The model integrates the Graph Attention Network (GAT) with the Temporal Convolutional Network to enhance prediction accuracy while ensuring the integrity of the Satellite‐Based Augmentation System, thereby improving its availability.
Hao Zhang, Yingkui Gong, Fei Zhao, Yuanhang Liu, Cheng Yu, Ziyue Hu, Yubo Zhu, Guang Yang, Hong Yuan   +8 more
wiley   +1 more source

Real-Time Single Frequency Precise Point Positioning Using SBAS Corrections

Sensors, 2016
Real-time single frequency precise point positioning (PPP) is a promising technique for high-precision navigation with sub-meter or even centimeter-level accuracy because of its convenience and low cost. The navigation performance of single frequency PPP
Liang Li, Chun Jia, Lin Zhao, Jianhua Cheng, Jianxu Liu, Jicheng Ding   +5 more
doaj   +1 more source

Design of a low-cost augmentation navigation system: the United Kingdom's immediate answer to the Galileo Brexit conundrum [PDF]

, 2019
United Kingdom’s Brexit from the European Union implies restricted access to the European Global Navigation Satellite System (GNSS) System - Galileo; with no access to the secured and encrypted signal used for defense and government purposes, which is ...
Chatwin, Chris Reginald, Lawal, Lasisi Salami   +1 more
core