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Mitigation of Carrier Phase Distortions Induced by Spatial Filtering using Antenna Arrays

Bamberg, Tobias and Konovaltsev, Andriy and Meurer, Michael (2020) Mitigation of Carrier Phase Distortions Induced by Spatial Filtering using Antenna Arrays. In: Proceedings of the 33rd International Technical Meeting of the Satellite Division of the Institute of Navigation, ION GNSS+ 2020, pp. 3120-3131. ION GNSS+ 2020 Virtual, Online. doi: 10.33012/2020.17707. ISBN 978-093640626-8.

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Official URL: https://www.ion.org/publications/abstract.cfm?articleID=17707

Abstract

The use of GNSS positioning in highly automated systems, like packet delivering using drones or self-driving cars, demands a reliable and accurate position estimation. At the same time the risk of radio-frequency interference(RFI), intentional or unintentional, increases. A promising countermeasure is to suppress the interference in the spatial domain using an antenna array. To apply this technique, a weighting vector is calculated and regularly updated during operation. This weighting vector is applied to the input signals resulting in a single output signal, which can drive a common GNSS receiver. However, these weighting vectors vary in time to adapt to the direction of arrival (DoA) of the satellites and the RFI. Therefore, this technique may induce a phase error to the carrier phase measurements. The carrier phase measurements are obligatory for high precision approaches like Precise Point Positioning (PPP) or Real Time Kinematics (RTK). In this work two new approaches reducing the phase error induced by spatial signal processing are introduced. The first approach aims to steer the phase of an updated weighting vector based on the previous weighting vector and the second approach aims to steer the phase of an updated weighting vector based on a constant weighting vector for all satellites.

Item URL in elib:https://elib.dlr.de/139346/
Document Type:Conference or Workshop Item (Speech)
Title:Mitigation of Carrier Phase Distortions Induced by Spatial Filtering using Antenna Arrays
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Bamberg, TobiasUNSPECIFIEDhttps://orcid.org/0000-0002-6951-5454UNSPECIFIED
Konovaltsev, AndriyUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Meurer, MichaelUNSPECIFIEDhttps://orcid.org/0000-0001-7465-6705UNSPECIFIED
Date:September 2020
Journal or Publication Title:Proceedings of the 33rd International Technical Meeting of the Satellite Division of the Institute of Navigation, ION GNSS+ 2020
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:No
DOI:10.33012/2020.17707
Page Range:pp. 3120-3131
ISBN:978-093640626-8
Status:Published
Keywords:GNSS, carrier phase measurement, antenna array, beamforming, spatial filter, RTK, PPP
Event Title:ION GNSS+ 2020 Virtual
Event Location:Online
Event Type:international Conference
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 (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Communication and Navigation > Navigation
Deposited By: Bamberg, Tobias
Deposited On:08 Dec 2020 16:13
Last Modified:29 Mar 2023 00:47

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