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ELoran Propagation Delay Prediction Model Based on a BP Neural Network for a Complex Meteorological Environment [PDF]

open access: yesSensors, 2023
The core of eLoran ground-based timing navigation systems is the accurate measurement of groundwave propagation delay. However, meteorological changes will disturb the conductive characteristic factors along the groundwave propagation path, especially ...
Shiyao Liu, Wei Guo, Yu Hua, Wudian Kou
doaj   +2 more sources

Critical and steady-state characteristics of delay propagation in an airport network.

open access: yesPLoS ONE, 2023
In this work, we established a density equation for delayed airports to investigate the horizontal propagation mechanism of delays among airports in an airport network.
Hong-Guang Yao, Hang Zhang
doaj   +1 more source

Study on Delay Propagation Relations Among Airports Based on Transfer Entropy

open access: yesIEEE Access, 2020
To understand the mechanism of delay propagation from the perspective of multiple airports, constructing delay propagation relation (DPR) networks among airports is a novel analysis method.
Yinhong Xiao   +3 more
doaj   +1 more source

A Spatial–Temporal Network Perspective for the Propagation Dynamics of Air Traffic Delays

open access: yesEngineering, 2021
Intractable delays occur in air traffic due to the imbalance between ever-increasing air traffic demand and limited airspace capacity. As air traffic is associated with complex air transport systems, delays can be magnified and propagated throughout ...
Qing Cai, Sameer Alam, Vu N. Duong
doaj   +1 more source

Scheduling‐measure dependent modelling of delay propagation on a single railway line: A matrix transformation approach

open access: yesIET Intelligent Transport Systems, 2021
This paper proposes an analytical delay propagation model for single railway lines based on the max‐plus algebra theory. The scheduling measures taken by dispatchers, including re‐timing and re‐ordering, will be incorporated into our delay propagation ...
Junfeng Ma   +4 more
doaj   +1 more source

Exploring Delay Propagation Causality in Various Airport Networks with Attention-Weighted Recurrent Graph Convolution Method

open access: yesAerospace, 2023
Exploring the delay causality between airports and comparing the delay propagation patterns across different airport networks is critical to better understand delay propagation mechanisms and provide effective delay mitigation strategies.
Jiawei Kang   +4 more
doaj   +1 more source

Data-Driven Modeling of Systemic Air Traffic Delay Propagation: An Epidemic Model Approach

open access: yesJournal of Advanced Transportation, 2020
To better understand the mechanism of air traffic delay propagation at the system level, an efficient modeling approach based on the epidemic model for delay propagation in airport networks is developed.
Shanmei Li   +4 more
doaj   +1 more source

EFFECTS OF MULTIPATH PROPAGATION CHANNEL IN TIGRIS RIVER

open access: yesJournal of Engineering and Sustainable Development, 2023
Tigris River is an environment of shallow waters because of its low depth and it has been identified as a multi-path channel. The underwater multi-path propagation leads to reverberation as well as fading, which causes large transmission loss.
Murad Shahadha Mahmood   +1 more
doaj   +1 more source

DAMAC: A Delay-Aware MAC Protocol for Ad Hoc Underwater Acoustic Sensor Networks

open access: yesSensors, 2021
In a channel shared by several nodes, the scheduling algorithm is a key factor to avoiding collisions in the random access-based approach. Commonly, scheduling algorithms can be used to enhance network performance to meet certain requirements. Therefore,
Ahmed Al Guqhaiman   +4 more
doaj   +1 more source

Treatment Method for Multi-AUV Cooperative Positioning Underwater Acoustic Propagation Delay Based on IMM Algorithm

open access: yes水下无人系统学报, 2023
To address the delay problem of underwater acoustic detection and communication in a master-slave autonomous undersea vehicle(AUV) cooperative positioning system, a time-delay processing method based on an interacting multiple model(IMM) algorithm is ...
Shijie CHEN   +5 more
doaj   +1 more source

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