Results 21 to 30 of about 121 (91)

Pseudorange reconstruction for high‐dynamic eLoran signal simulators using B‐spline interpolation

open access: yesIET Radar, Sonar & Navigation
The High‐Dynamic enhanced Loran (eLoran) signal simulator must accurately model the motion parameters and dynamic transmission delays of the carriers in the channel.
Hongyu Ma   +4 more
doaj   +2 more sources

Research on the eLoran/GNSS Combined Positioning Algorithm and Altitude Optimization

open access: yesRemote Sensing
With the widespread use of the Global Navigation Satellite System (GNSS), its signal vulnerabilities and security issues have become increasingly exposed.
Man Yang   +4 more
doaj   +2 more sources

Research on ELoran Demodulation Algorithm Based on Multiclass Support Vector Machine

open access: yesRemote Sensing
Demodulation and decoding are pivotal for the eLoran system’s timing and information transmission capabilities. This paper proposes a novel demodulation algorithm leveraging a multiclass support vector machine (MSVM) for pulse position modulation (PPM ...
Shiyao Liu   +7 more
doaj   +2 more sources

Research on eLoran Weak Signal Extraction Based on Wavelet Hard Thresholding Processing

open access: yesRemote Sensing
As the eLoran signal propagates, its strength gradually diminishes with increasing distance, making subsequent signal capture and terminal development challenging.
Langlang Cheng   +5 more
doaj   +2 more sources

Enhancing Coastal Air Navigation: eLoran 3-D Positioning and Cycle Slip Mitigation

open access: yesIEEE Access
The rapid expansion of Advanced Air Mobility has highlighted its significant dependence on Global Navigation Satellite Systems, particularly in the maritime context.
Pyo-Woong Son, Tae Hyun Fang
doaj   +2 more sources

Demonstration of the Feasibility of the Korean eLoran System as a Resilient PNT in a Testbed

open access: yesRemote Sensing, 2023
With the increasing utilization of location information, attempts to improve the safety of absolute positioning coordinates, which have depended on global navigation satellite systems (GNSSs), such as the Global Positioning System (GPS), are underway ...
Pyo-Woong Son   +4 more
doaj   +1 more source

Analysis of the Development Status of eLoran Time Service System in China

open access: yesApplied Sciences, 2023
This article introduces the eLoran timing system principle, the characteristics of the eLoran and GNSS systems, and the current development status of eLoran in China.
Chaozhong Yang, Shifeng Li, Zhaopeng Hu
doaj   +1 more source

VDES R‐Mode performance analysis and experimental results

open access: yesInternational Journal of Satellite Communications and Networking, Volume 41, Issue 2, Page 158-177, March/April 2023., 2023
As maritime shipping relies almost exclusively on GNSS, there has been a demand for a backup system in case of a GNSS failure. We introduce and theoretically analyze the positioning performance of VDES R‐Mode as a candidate for an alternative maritime navigation system.
Markus Wirsing   +2 more
wiley   +1 more source

Positioning with medium frequency R‐Mode

open access: yesNAVIGATION, Volume 68, Issue 4, Page 829-841, Winter 2021., 2021
Abstract R‐Mode is a terrestrial navigation system under development for the maritime domain that provides backup in case of a GNSS outage. This paper describes the first test results for real‐time positioning on board a ship using medium frequency R‐Mode signals.
Lars Grundhöfer   +6 more
wiley   +1 more source

eLoran Signal Strength and Atmospheric Noise Simulation over Korea [PDF]

open access: yesJournal of Positioning, Navigation, and Timing, 2013
GPS is the most widely-used Positioning, Navigation, and Timing (PNT) system. Since GPS is an important PNT infrastructure, the vulnerability of GPS to signal jamming has received significant attention. Especially, South Korea has experienced intentional high-power jamming from North Korea for the past three years, and thus realized the necessity of a ...
Joon Hyo Rhee, Jiwon Seo
openaire   +1 more source

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