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Enhancement of MF R-Mode ranging accuracy by exploiting measurement-based error mitigation techniques

Rizzi, Filippo Giacomo and Hehenkamp, Niklas and Grundhöfer, Lars and Gewies, Stefan (2022) Enhancement of MF R-Mode ranging accuracy by exploiting measurement-based error mitigation techniques. WMU Journal of Maritime Affairs. Springer Nature. doi: 10.1007/s13437-022-00293-z. ISSN 1651-436X.

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Nowadays, the maritime sector strongly relies on global navigation satellite systems (GNSS) for the provision of position, navigation and timing (PNT) information. The standard functionality of several ships' bridge instruments depends on such information, which becomes critical to have a safe and reliable navigation. Nevertheless, the possibility of GNSS outages combined with unintentional and intentional interference to GNSS signals, which have been increasing over the last years, can severely threaten the nominal activity of the crew onboard of vessels. For these reasons, alternative position, navigation and timing (APNT) systems become fundamental in order to provide operational continuity. R(anging)-Mode is a terrestrial alternative system to GNSS for the maritime domain. In one of its possible implementation, it exploits synchronized medium frequency (MF) signals transmitted by maritime radio beacons. In the MF band the radio waves are attenuated and distorted by the change of electrical properties of the ground along the propagation path. Moreover, these signals are affected by terrain elevation changes and large metallic infrastructures which induce an overall loss in the accuracy of the system. In this paper, we propose a mitigation technique based on the estimation of these additional error sources by using in-field range measurements. The theoretical details are explained in depth and the technique is validated with real data gathered on a measurement campaign. A clear and significant performance improvement is achieved on the range accuracy when the proposed approach is applied.

Item URL in elib:https://elib.dlr.de/191279/
Document Type:Article
Title:Enhancement of MF R-Mode ranging accuracy by exploiting measurement-based error mitigation techniques
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Rizzi, Filippo GiacomoUNSPECIFIEDhttps://orcid.org/0000-0003-0585-2133UNSPECIFIED
Hehenkamp, NiklasUNSPECIFIEDhttps://orcid.org/0000-0001-9880-8451UNSPECIFIED
Grundhöfer, LarsUNSPECIFIEDhttps://orcid.org/0000-0002-8650-8280UNSPECIFIED
Gewies, StefanUNSPECIFIEDhttps://orcid.org/0000-0001-5549-8115UNSPECIFIED
Date:December 2022
Journal or Publication Title:WMU Journal of Maritime Affairs
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:Yes
Publisher:Springer Nature
Keywords:APNT, R-Mode, AGDF, error estimation, error mitigation
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Transport System
DLR - Research area:Transport
DLR - Program:V VS - Verkehrssystem
DLR - Research theme (Project):V - FuturePorts
Location: Neustrelitz
Institutes and Institutions:Institute of Communication and Navigation > Nautical Systems
Deposited By: Rizzi, Filippo Giacomo
Deposited On:08 Dec 2022 19:12
Last Modified:08 Dec 2022 19:12

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