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Robust Snapshot Positioning in Multi-Antenna Systems for Inland Water Applications

Lass, Christoph (2017) Robust Snapshot Positioning in Multi-Antenna Systems for Inland Water Applications. In: PIANC - Smart Rivers 2017. PIANC - Smart Rivers 2017, 18. - 21. Sep. 2017, Pittsburgh, USA.

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Abstract

Abstract: Global Navigation Satellite Systems (GNSS) are increasingly used as the main source of Positioning, Navigation and Timing (PNT) information for inland water navigation. Therefore, it becomes of crucial importance to ensure reliability and accuracy of the GNSS-based navigation solution for challenging inland waterway environments like locks or bridges where effects such as multipath and non-line-of-sight (NLOS) can occur. This work extends the single-antenna snapshot positioning solver to a multi-antenna snapshot positioning and orientation solver. In contrast to a single position calculation for each individual antenna, this combined approach allows position and orientation calculation even in the case that each antenna has less than four observations. Any additional observation can be used in a robust estimation framework, for instance by applying the S-estimator, to lessen the impact of NLOS effects. Moreover, different weighting options for the satellite signals are considered where the elevation angle of the satellites, as well as the signal-to-noise ratio measured by the receiver, is taken into account. The presented scheme is evaluated using real measurement data from an inland water scenario with multiple bridges and a waterway lock. With regard to single-antenna algorithms the initial results are encouraging and clearly indicate the advantage of the combined position and orientation calculation with multiple GNSS antennas, especially in scenarios where direct GNSS signals are obstructed. Also the multi-antenna scheme in combination with a robust estimation framework shows the potential to be used in advanced driver assistance systems for integrated navigation as well as autonomous shipping. Why of interest? Well-known robust methods such as the S-estimator can easily be applied to this scheme and in such further help with NLOS as well as multipath effects. This allows for reliable driver assistance systems which are of utmost importance since the majority of inland water accidents are caused by human faults. Therefore, the need for robust navigation schemes such as this is as high as it has ever been.

Item URL in elib:https://elib.dlr.de/118875/
Document Type:Conference or Workshop Item (Speech)
Title:Robust Snapshot Positioning in Multi-Antenna Systems for Inland Water Applications
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Lass, Christophchristoph.lass (at) dlr.deUNSPECIFIED
Date:21 September 2017
Journal or Publication Title:PIANC - Smart Rivers 2017
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Navigation, Positioning, GNSS, Robust Methods, Multi-Antenna
Event Title:PIANC - Smart Rivers 2017
Event Location:Pittsburgh, USA
Event Type:international Conference
Event Dates:18. - 21. Sep. 2017
Organizer:PIANC
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:other
DLR - Research area:Transport
DLR - Program:V - no assignment
DLR - Research theme (Project):V - no assignment
Location: Neustrelitz
Institutes and Institutions:Institute of Communication and Navigation > Nautical Systems
Deposited By: Lass, Christoph
Deposited On:09 Feb 2018 09:38
Last Modified:09 Feb 2018 09:38

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