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Modelling the Noise of GNSS Signals under Jamming Conditions

Lass, Christoph and Ziebold, Ralf (2018) Modelling the Noise of GNSS Signals under Jamming Conditions. NAVITEC 2018, 05. - 07.12.2018, Noordwijk, Niederlande.

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Abstract

Global Navigation Satellite Systems (GNSS) are increasingly used as the main source for Positioning, Navigation and Timing (PNT) information for maritime and inland water applications. With the rising availability of cheap jamming devices such as Personal Privacy Devices (PPD), there is real threat to GNSS based navigation. Therefore, it becomes of upmost importance to estimate the accuracy of the satellite signals, even under disturbance. The presented work examines the influence of jamming on the noise of the signals and if it can be modeled. Laboratory experiments showed that it is possible to accurately estimate the noise in jamming conditions which is even consistent with undisturbed measurements. Hence, the derived model describes the noise of GNSS signals in scenarios with and without jamming. It uses the elevation angles of the satellites and the Signal-toNoise Ratio (SNR) of its signals to estimate the respective noise. The parameters of the model are calculated by fitting them to real measurement data of scenarios with different amount of jamming. The initial results show that this model estimates the noise of the signals better than classic weighting schemes using only the elevation angles or just the SNR. This shows the potential of the model to be used in multisensor fusion scheme as a weighting scheme in an iterative least squares position solver or as a variance estimator in a Kalman filter in demanding environments.

Item URL in elib:https://elib.dlr.de/122465/
Document Type:Conference or Workshop Item (Speech)
Title:Modelling the Noise of GNSS Signals under Jamming Conditions
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Lass, ChristophChristoph.Lass (at) dlr.deUNSPECIFIED
Ziebold, Ralfralf.ziebold (at) dlr.deUNSPECIFIED
Date:7 December 2018
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Jamming, Radio Interference, Noise Model, GNSS
Event Title:NAVITEC 2018
Event Location:Noordwijk, Niederlande
Event Type:international Conference
Event Dates:05. - 07.12.2018
Organizer:ESA
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 - Energie und Verkehr
Location: Neustrelitz
Institutes and Institutions:Institute of Communication and Navigation > Nautical Systems
Deposited By: Lass, Christoph
Deposited On:08 Jan 2019 15:59
Last Modified:31 Jul 2019 20:20

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