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Phase Estimation of Single Tones Next to Modulated Signals in the medium frequency R-Mode system

Grundhöfer, Lars and Wirsing, Markus and Gewies, Stefan and Del Galdo, Giovanni (2022) Phase Estimation of Single Tones Next to Modulated Signals in the medium frequency R-Mode system. IEEE Access. IEEE - Institute of Electrical and Electronics Engineers. doi: 10.1109/ACCESS.2022.3190544. ISSN 2169-3536.

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Position, navigation, and timing information are critical to today’s infrastructures; as a result, the possibility of estimating ranges is being explored in more and more radio systems. One way to achieve this is to extend the modulation with time-synchronised aiding carriers and to estimate their phase at the receiver side. In this paper, we present two ways to minimise the negative influence of the modulation on the phase estimation. We show that the classical maximum likelihood estimator is still an efficient estimator for our problem, using a medium-frequency R-Mode signal as an example, and is therefore used in receiver designs. We then describe two possible ways to precondition the signal to increase the accuracy for short observations. As a first approach, we describe how window functions can positively change the signal-to-noise ratio for our estimation. As a second approach, we show the use of a narrowband bandpass filter. Finally, we show that these approaches, applied to real measurements, improve the variance of the estimate by up to two orders of magnitude.

Item URL in elib:https://elib.dlr.de/187333/
Document Type:Article
Title:Phase Estimation of Single Tones Next to Modulated Signals in the medium frequency R-Mode system
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Grundhöfer, LarsUNSPECIFIEDhttps://orcid.org/0000-0002-8650-8280UNSPECIFIED
Wirsing, MarkusUNSPECIFIEDhttps://orcid.org/0000-0002-7192-5831UNSPECIFIED
Gewies, StefanUNSPECIFIEDhttps://orcid.org/0000-0001-5549-8115UNSPECIFIED
Del Galdo, GiovanniUNSPECIFIEDhttps://orcid.org/0000-0002-7195-4253UNSPECIFIED
Date:July 2022
Journal or Publication Title:IEEE Access
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In ISI Web of Science:Yes
Publisher:IEEE - Institute of Electrical and Electronics Engineers
Keywords:APNT, R-Mode, phase estimation, navigation, signal processing
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 - I4Port (old)
Location: Neustrelitz
Institutes and Institutions:Institute of Communication and Navigation > Nautical Systems
Deposited By: Grundhöfer, Lars
Deposited On:23 Aug 2022 13:34
Last Modified:23 Aug 2022 13:34

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