Results 21 to 30 of about 2,715 (189)

RAIM: three-stage stackelberg game for hierarchical federated learning with reputation-aware incentive mechanism [PDF]

open access: yesScientific Reports
Hierarchical Federated Learning (HFL) significantly enhances communication efficiency and device participation, while improving personalized learning outcomes.
Cuihua Zuo   +5 more
doaj   +2 more sources

Extending RAIM with a Gaussian Mixture of Opportunistic Information

open access: yesThe International Technical Meeting of the The Institute of Navigation
GNSS are indispensable for various applications, but they are vulnerable to spoofing attacks. The original receiver autonomous integrity monitoring (RAIM) was not designed for securing GNSS. In this context, RAIM was extended with wireless signals, termed signals of opportunity (SOPs), or onboard sensors, typically assumed benign.
Wenjie Liu 0017, Panos Papadimitratos
openaire   +4 more sources

A Dynamic-Data-Driven Method for Improving the Performance of Receiver Autonomous Integrity Monitoring

open access: yesIEEE Access, 2021
In this article, the problem of receiver autonomous integrity monitoring (RAIM) is transformed into a modeling problem using dynamic data and an artificial neural network. A new RAIM method based on a probabilistic neural network (P-RAIM) is presented to
Xueen Zheng   +7 more
doaj   +1 more source

A new high-voltage calcium intercalation host for ultra-stable and high-power calcium rechargeable batteries

open access: yesNature Communications, 2021
Rechargeable calcium batteries are promising multivalent battery systems but the lack of suitable electrodes hampers their development. Here the authors report a cathode derived from polyanion framework that demonstrates uncommonly stable and fast ...
Zheng-Long Xu   +9 more
doaj   +1 more source

A CIPSO-FCM-Based RAIM Algorithm for the GPS/BDS Integrated Navigation System

open access: yesIEEE Access, 2021
The receiver integrity monitoring of a satellite navigation system directly affects positioning accuracy and train safety. The GPS/BDS (Global Positioning System/BeiDou Navigation System) integrated navigation system can meet the requirements of RAIM ...
Miao Luo   +3 more
doaj   +1 more source

Improved receiver autonomous integrity monitoring algorithm

open access: yesThe Journal of Engineering, 2019
The integrity monitoring algorithm guarantees that the receiver can get the correct positioning and speed, which has very important theoretical significance and practical application value.
Meina Li, Zihuan Hao, Lei Zhang
doaj   +1 more source

Forward‐Looking Study of Solar Maximum Impact in 2025: Effects of Satellite Navigation Failure on Aviation Network Operation in the Greater Bay Area, China

open access: yesSpace Weather, Volume 21, Issue 12, December 2023., 2023
Abstract Satellite navigation based on the Global Navigation Satellite System can provide aircraft with more precise guidance and increase flight efficiency. However, severe space weather events can cause satellite navigation failure due to the dramatic increase in total electron content and irregularities in the ionosphere.
Dabin Xue   +3 more
wiley   +1 more source

Improvement of Anomalous Behavior Detection of GNSS Signal Based on TDNN for Augmentation Systems

open access: yesSensors, 2018
The reliability of a navigation system is crucial for navigation purposes, especially in areas where stringent performance is required, such as civil aviation or intelligent transportation systems (ITSs). Therefore, integrity monitoring is an inseparable
Daehee Kim, Jeongho Cho
doaj   +1 more source

Multi-layered Multi-Constellation Global Navigation Satellite System Interference Mitigation

open access: yesNavigation, 2023
Several layers of defense can be implemented in a global navigation satellite system (GNSS) receiver to improve its performance in the presence of interference.
Ciro Gioia, Daniele Borio
doaj   +1 more source

Calculation of Optimal Vertical Protection Level Based on Integrity Risk and Continuity Risk [PDF]

open access: yesJisuanji gongcheng, 2017
In order to reduce the integrity risks and continuity risks in the process of precision vertical guidance of aircraft,and make the Receiver Autonomous Integrity Monitoring(RAIM) algorithm provide the horizontal and vertical integrity for security,this ...
YANG Kai,GUO Chengjun
doaj   +1 more source

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