Results 51 to 60 of about 143,499 (172)

TriMSAN: A Triple‐Path Multi‐Modal Self‐Attention Network for Tightly Coupled GNSS/INS Integration Under GNSS Outages

open access: yesIET Radar, Sonar &Navigation, Volume 20, Issue 1, January/December 2026.
TriMSAN is a per‐satellite observation‐domain framework that predicts pseudorange and pseudorange‐rate variations from IMU/INS motion features, satellite kinematics and historical GNSS observations. The predicted variations are recursively accumulated to reconstruct pseudo‐measurements for the original tightly coupled filter.
Boyuan Liu   +3 more
wiley   +1 more source

Performance evaluation of flooding in MANETs in the presence of multi-broadcast traffic [PDF]

open access: yes, 2005
Broadcasting has many important uses and several mobile ad hoc networks (MANETs) protocols assume the availability of an underlying broadcast service. Applications, which make use of broadcasting, include LAN emulation, paging a particular node. However,
Ould-Khaoua, M.   +5 more
core   +1 more source

Enhancing Security and Transparency in Satellite Data Transactions Using Ethereum‐Based Blockchain

open access: yesThe Journal of Engineering, Volume 2026, Issue 1, January/December 2026.
This study presents an Ethereum‐based framework for securing satellite data transactions using ERC1155 tokenization, Proof of Authority consensus, and Threshold Cryptography. The system achieves low latency, high throughput, and significantly reduced gas costs while providing strong resistance against MITM, Sybil, and reentrancy attacks.
Saha Reno   +3 more
wiley   +1 more source

GNSS Signal Multipath Error Analysis and Estimation for Accurate Positioning in Different Scenarios: A Case Study in Bahir Dar City, Ethiopia

open access: yesInternational Journal of Antennas and Propagation, Volume 2026, Issue 1, 2026.
Multipath interference remains one of the major limitations affecting the accuracy and reliability of Global Navigation Satellite System (GNSS) positioning, particularly in environments where satellite signals are obstructed or reflected by surrounding structures and vegetation.
Zemene Melaku Azene   +6 more
wiley   +1 more source

The Impact of the 2024 Mother's Day Storm on Aircraft Surveillance Across Europe

open access: yesSpace Weather, Volume 23, Issue 12, December 2025.
Abstract The Mother's day storm from 10–13 May 2024 is one of the most extreme space weather events recorded in recent decades and triggered a strong ionospheric response with various impacts on communication and navigation systems. In this study the impact on the aviation sector, and more specifically air traffic management, is investigated with ...
Erik Schmölter, Jens Berdermann
wiley   +1 more source

Effect of the epoch changes of GPS broadcast ephemeris on baseline length observation. [PDF]

open access: yes, 1992
Orbital error of Global Positioning System (GPS) satellites is one of the greatest error sources of GPS positioning. GPS broadcast ephemerides are generally updated every 1 hour for Block I satellites and every 2 hours for Block II satellites.
Kawai, Koji
core  

Ephemerides Budenses, magyar nyelvű regeszták [PDF]

open access: yes, 2014
1790 - az Ephemerides Budenses Tertina Mihály által szerkesztett számainak magyar ...
Balogh, Piroska
core   +1 more source

A GIVE Prediction Method in SBAS Based on GAT‐TCN

open access: yesSpace 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   +8 more
wiley   +1 more source

INPOP17a planetary ephemerides

open access: yes, 2017
International audienceBased on the use of Cassini radio tracking data and the introduction of LLR data obtained at 1064 nm, a new planetary ephemerides INPOP17a was built including improvements for the planet orbits as well as for Moon ephemerides ...
Viswanathan, V.   +7 more
core   +1 more source

Integrated precise orbit determination for LEO constellation and BDS-3 MEO satellites using inter-satellite links and onboard BDS-3 observations

open access: yesSatellite Navigation
By leveraging the high-precision spatial reference established with Global Navigation Satellite System (GNSS), we propose a low-ground-dependency and low-latency Precise Orbit Determination (POD) method employing onboard GNSS, Inter-Satellite Link (ISL ...
Geer Qin   +8 more
doaj   +1 more source

Home - About - Disclaimer - Privacy