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Phase Centre Variations in �Adaptive GNSS Antenna Arrays

Konovaltsev, Andriy and Basta, Nikola and Cuntz, Manuel (2009) Phase Centre Variations in �Adaptive GNSS Antenna Arrays. In: http://www.cost-ic0803.org/, Web-Page of Action. Workshop of COST Action IC0803 RFCSET, 2009-10-07 - 2009-10-09, Glyfada, Athens, Greece. (In Press)


Official URL: http://www.cost-ic0803.org/


Adaptive antennas with digital beamforming is a promising technology for mitigation of radio interference and multipath effects in GNSS receivers. It is however well known that adaptive antennas may introduce biases in the pseudo-range and carrier phase measurements of a GNSS receiver. This effect can be interpreted as the deviation of the array phase centre from its nominal position. The array phase centre position is affected by the beamforming process as well as the properties of a single array element and electromagnetic coupling between the elements. Another factor affecting the position of the array phase centre are different characteristics of individual antenna channels (RF front ends), which requires accurate calibration. In the work to be presented, we investigated the phase centre variations of a 2x2 uniform rectangular adaptive antenna array by using the measured patterns of the antenna elements and applying different beamforming techniques. The array is designed for the reception of GPS/Galileo signals in the L1 band. The beamforming techniques are implemented in DLR in-house multi-antenna software GNSS receiver. The effect of phase centre variations on the positioning accuracy of a GNSS receiver as well as the possible compensation approaches are discussed.

Item URL in elib:https://elib.dlr.de/60237/
Document Type:Conference or Workshop Item (Speech)
Title:Phase Centre Variations in �Adaptive GNSS Antenna Arrays
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Date:8 October 2009
Journal or Publication Title:http://www.cost-ic0803.org/, Web-Page of Action
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Status:In Press
Keywords:Satellite navigation, adaptive antenna, phase centre, calibration
Event Title:Workshop of COST Action IC0803 RFCSET
Event Location:Glyfada, Athens, Greece
Event Type:Workshop
Event Start Date:7 October 2009
Event End Date:9 October 2009
Organizer:University of Peloponnese
HGF - Research field:other
HGF - Program:other
HGF - Program Themes:other
DLR - Research area:no assignment
DLR - Program:no assignment
DLR - Research theme (Project):no assignment
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Communication and Navigation > Navigation
Deposited By: Konovaltsev, Dr.-Ing. Andriy
Deposited On:02 Nov 2009 08:02
Last Modified:24 Apr 2024 19:25

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