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Performance Assessment of the Medium Frequency R-Mode Baltic Testbed at Sea near Rostock

Rizzi, Filippo Giacomo and Grundhöfer, Lars and Gewies, Stefan and Ehlers, Tobias (2023) Performance Assessment of the Medium Frequency R-Mode Baltic Testbed at Sea near Rostock. Applied Sciences. Multidisciplinary Digital Publishing Institute (MDPI). doi: 10.3390/app13031872. ISSN 2076-3417.

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Official URL: https://www.mdpi.com/2076-3417/13/3/1872


Global Navigation Satellite Systems (GNSS) are the primary source of position, navigation and timing (PNT) information in the maritime domain. Nevertheless, there is a pressing need for alternative absolute position information to serve as a backup when GNSS is not trustworthy or usable. One possible alternative navigation system is the terrestrial Ranging Mode, also known as the R-Mode. It reuses medium frequency (MF) radio beacons and base stations of the very high frequency data exchange system (VDES) for the transmission of synchronised signals in the service areas of those stations. A large-scale R-Mode testbed is available in the southern Baltic Sea with eight MF radio beacons transmitting R-Mode signals. These signals suffer the self-interference generated by the reflection of the radio wave from the ionosphere at night. The reflected signal, known as the sky wave in the literature, is a form of multipath, which decreases the accuracy of the system. In our work, we present the analysis of measurements obtained with the research vessel Deneb. The horizontal accuracy achieved in the optimal condition was 15.1 m (95%), whereas under the sky wave, the accuracy decreased to 55.3 m. The results are a starting point for the further development of the MF R-Mode system.

Item URL in elib:https://elib.dlr.de/193839/
Document Type:Article
Title:Performance Assessment of the Medium Frequency R-Mode Baltic Testbed at Sea near Rostock
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Rizzi, Filippo GiacomoUNSPECIFIEDhttps://orcid.org/0000-0003-0585-2133UNSPECIFIED
Grundhöfer, LarsUNSPECIFIEDhttps://orcid.org/0000-0002-8650-8280UNSPECIFIED
Gewies, StefanUNSPECIFIEDhttps://orcid.org/0000-0001-5549-8115UNSPECIFIED
Date:31 January 2023
Journal or Publication Title:Applied Sciences
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In ISI Web of Science:Yes
Publisher:Multidisciplinary Digital Publishing Institute (MDPI)
Series Name:Marine Science and Engineering
Keywords:APNT; R-Mode, medium frequency, sky wave, maritime navigation,
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:13 Feb 2023 17:27
Last Modified:13 Feb 2023 17:27

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