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Determination of Pseudorange Error Models and Multipath Characterization under Signal-Degraded Scenarios

Medina, Daniel and Gibson, Kasia and Ziebold, Ralf and Closas, Pau (2018) Determination of Pseudorange Error Models and Multipath Characterization under Signal-Degraded Scenarios. ION GNSS+ 2018, 24-28 Sep 2018, Miami, Florida (USA).

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Abstract

As Global Navigation Satellite Systems (GNSS) become increasingly important for the application of autonomous transportation, the characterization of the uncertainty present in GNSS signals has been a recurrent topic in the GNSS community. With multipath being the most pronounced source of error while navigating during challenging scenarios, characterizing this process is a growing requirement. Improper modeling of the measurements variances can reduce the accuracy of the estimation as much as a gross bias on these measurements. It is therefore required to have reliable and statistically meaningful modeling of errors. To isolate the multipath from the other error sources, the dual-frequency iono-corrected code-minus-carrier combination (CMC) is employed. Conjugate prior Bayesian analysis is used to characterize the variance of the multipath effect to later regress the unknown parameter of the proposed error models. For the derivation of these models, massive amounts of multi-frequency GPS and Galileo data was collected. The comparison between the proposed models was carried out with actual data from a challenging signal-degraded scenario, in terms of positioning and integrity monitoring performance.

Item URL in elib:https://elib.dlr.de/122140/
Document Type:Conference or Workshop Item (Speech)
Title:Determination of Pseudorange Error Models and Multipath Characterization under Signal-Degraded Scenarios
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Medina, DanielDaniel.AriasMedina (at) dlr.dehttps://orcid.org/0000-0002-1586-3269
Gibson, KasiaKasia.Gibson (at) dlr.deUNSPECIFIED
Ziebold, Ralfralf.ziebold (at) dlr.deUNSPECIFIED
Closas, Paupau.closas (at) northeastern.eduhttps://orcid.org/0000-0002-5960-6600
Date:September 2018
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:GNSS; Probabilistic Modeling; Multipath; Variance Model;
Event Title:ION GNSS+ 2018
Event Location:Miami, Florida (USA)
Event Type:international Conference
Event Dates:24-28 Sep 2018
Organizer:Institute of Navigation (ION)
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Communication and Navigation
DLR - Research area:Raumfahrt
DLR - Program:R KN - Kommunikation und Navigation
DLR - Research theme (Project):R - Project Navigation 4.0
Location: Neustrelitz
Institutes and Institutions:Institute of Communication and Navigation > Nautical Systems
Deposited By: Medina, Daniel
Deposited On:25 Oct 2018 14:44
Last Modified:24 Sep 2019 15:33

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