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Multipath Effects on a GNSS Receiver Tracking Performance

Vergara, Mariano and Antreich, Felix and Hornbostel, Achim (2009) Multipath Effects on a GNSS Receiver Tracking Performance. Wave Propagation and Scattering in Communications, Microwave Remote Sensing and Navigation, 2009-11-25 - 2009-11-27, Chemnitz, Deutchland.

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Multipath propagation is a major source of error in a GNSS receiver. In particular, the tracking of the time delay estimate, which is used to calculate the distance between the satellite and the user, is affected by multipath in two ways: the estimation of the time delay will get biased and the tracking error jitter is changed. Although the performance degradation due to multipath is usually assessed by means of simulations, here we propose a straightforward mathematical model for it. Under certain assumptions, it is indeed possible to calculate the bias and the variance of the tracking error due to multipath. And this can me done for a propagation channel made of an arbitrary number of paths. With such a model, the effect of multipath can be described in terms of MSE of the tracking error, which, instead of being obtained through simulations can be obtained by mathematical analysis. The MSE,infact, turns out to be a deterministic function of the channel impulse response and of the receiver parameters. This approach in the characterization of multipath adds a new useful tool in the evaluation of performance of GNSS receiver, since not only can save resources which are needed to do field measurements, but it has the added value of providing an insight of the role of each parameter in what it is overally called “multipath error”. Analytical results will be presented for a static multipath scenario, and multipath mitigation techniques, as the Narrow Correlator and the Double Delta Correlator, thought with the intention of reducing the multipath bias, will be analysed and compared from this new perspective.

Item URL in elib:https://elib.dlr.de/62491/
Document Type:Conference or Workshop Item (Speech)
Title: Multipath Effects on a GNSS Receiver Tracking Performance
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Date:November 2009
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:multipath degradation, multipath error
Event Title:Wave Propagation and Scattering in Communications, Microwave Remote Sensing and Navigation
Event Location:Chemnitz, Deutchland
Event Type:national Conference
Event Start Date:25 November 2009
Event End Date:27 November 2009
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W KN - Kommunikation/Navigation
DLR - Research area:Space
DLR - Program:W KN - Kommunikation/Navigation
DLR - Research theme (Project):W - Vorhaben GNSS2/Neue Dienste und Produkte (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Communication and Navigation > Navigation
Deposited By: Vergara, Mariano
Deposited On:13 Jan 2010 09:52
Last Modified:24 Apr 2024 19:27

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