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Quantifying errors in GNSS antenna calibrations: Towards in situ phase center corrections
RISE Research Institutes of Sweden, Safety and Transport, Measurement Technology.ORCID iD: 0000-0001-5203-5465
RISE Research Institutes of Sweden, Safety and Transport, Measurement Technology.
RISE Research Institutes of Sweden, Safety and Transport, Measurement Technology.
2020 (English)In: Journal of Geodesy, ISSN 0949-7714, E-ISSN 1432-1394, Vol. 94, no 10, article id 105Article in journal (Refereed) Published
Abstract [en]

We evaluated the performance of GNSS absolute antenna calibrations and its impact on accurate positioning with a new assessment method that combines inter-antenna differentials and laser tracker measurements. We thus separated the calibration method contributions from those attainable by various geometric constraints and produced corrections for the calibrations. We investigated antennas calibrated by two IGS-approved institutions and in the worst case found the calibration’s contribution to the vertical component being in excess of 1 cm on the ionosphere-free frequency combination L3. In relation to nearby objects, we gauge the 1 σ accuracies of our method to determine the antenna phase centers within ±0.38 mm on L1 and within ±0.62 mm on L3, the latter applicable to global frame determinations where atmospheric influence cannot be neglected. In addition to antenna calibration corrections, the results can be used with an equivalent tracker combination to determine the phase centers of as-installed individual receiver antennas at system critical sites to the same level without compromising the permanent installations. © 2020, The Author(s).

Place, publisher, year, edition, pages
Springer Science and Business Media Deutschland GmbH , 2020. Vol. 94, no 10, article id 105
Keywords [en]
Antenna, Calibration, GNSS, Local tie, PCC, PCO, PCV, Phase center offset, Phase center variation, Terrestrial reference frame, TRF, correction, geodesy, geometry, in situ measurement, ionosphere, performance assessment
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-50427DOI: 10.1007/s00190-020-01433-0Scopus ID: 2-s2.0-85092476245OAI: oai:DiVA.org:ri-50427DiVA, id: diva2:1505311
Note

Funding details: Horizon 2020 Framework Programme, H2020, SIB60; Funding details: European Metrology Programme for Innovation and Research, EMPIR; Funding text 1: This work has received funding from the European Metrology Programme for Innovation and Research EMPIR programme co-financed by the Participating States and from the European Union’s Horizon 2020 research and innovation programme. Funder ID: 10.13039/100014132, Grant number 18SIB01 GeoMetre. Funding has also been received from Lantmäteriet in Close3 and the European Metrology Research Programme EMRP, Grant SIB60. Open access funding provided by RISE Research Institutes of Sweden.

Available from: 2020-11-30 Created: 2020-11-30 Last updated: 2023-06-08Bibliographically approved

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Bergstrand, Sten

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