Details
| Original language | English |
|---|---|
| Title of host publication | Geodesy for a Sustainable Earth |
| Subtitle of host publication | Proceedings of the 2021 Scientific Assembly of the International Association of Geodesy, Beijing, China, June 28 - July 2, 2021 |
| Editors | Jeffrey T. Freymueller, Laura Sánchez |
| Publisher | Springer Nature |
| Pages | 333 - 343 |
| Number of pages | 11 |
| ISBN (electronic) | 9783031295072 |
| ISBN (print) | 9783031295065 |
| Publication status | Published - 2023 |
Publication series
| Name | International Association of Geodesy Symposia |
|---|---|
| Volume | 154 |
| ISSN (Print) | 0939-9585 |
| ISSN (electronic) | 2197-9359 |
Abstract
In this paper, the standard calibration approach with a sampling rate of 1 Hz is briefly described, which works well for PCC estimation. The main challenge of this approach for estimating repeatable CPC patterns is the significantly higher noise to pattern ratio in the observations compared to PCC determination. Therefore, an alternative processing strategy is presented in this contribution. By increasing the sampling rate to 10 Hz, the empirical mode decomposition can be used to reduce the noise of the input observations by maintaining all pattern information. With this method, the calibration repeatability is improved by 46% to 60% for GPS and Galileo C1C signals for a geodetic antenna. Moreover, the estimated pattern is validated in the positioning domain with a single point positioning approach. By considering the estimated CPC the accuracy of the height component can be improved.
Keywords
- Absolute antenna calibration, Group delay variation, codephase center corrections (CPC), Empirical Mode Decomposition, Empirical mode decomposition, Group delay variations, Codephase center corrections
ASJC Scopus subject areas
- Mathematics(all)
- Applied Mathematics
- Engineering(all)
- Electrical and Electronic Engineering
- Earth and Planetary Sciences(all)
- Computers in Earth Sciences
- Earth and Planetary Sciences(all)
- Geophysics
Research Area (based on ÖFOS 2012)
- TECHNICAL SCIENCES
- Electrical Engineering, Electronics, Information Engineering
- Electrical Engineering, Electronics, Information Engineering
- Microwave engineering
- TECHNICAL SCIENCES
- Environmental Engineering, Applied Geosciences
- Geodesy, Surveying
- Satellite geodesy
- TECHNICAL SCIENCES
- Environmental Engineering, Applied Geosciences
- Geodesy, Surveying
- Satellite-based coordinate measuring
Cite this
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- Apa
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- BibTeX
- RIS
Geodesy for a Sustainable Earth: Proceedings of the 2021 Scientific Assembly of the International Association of Geodesy, Beijing, China, June 28 - July 2, 2021. ed. / Jeffrey T. Freymueller; Laura Sánchez. Springer Nature, 2023. p. 333 - 343 159 (International Association of Geodesy Symposia; Vol. 154).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Estimation and Validation of Codephase Center Correction using the Empirical Mode Decomposition
AU - Breva, Yannick
AU - Kröger, Johannes
AU - Kersten, Tobias
AU - Schön, Steffen
N1 - Funding Information: Parts of the work were funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation)— Project-ID 434617780—SFB 1464.
PY - 2023
Y1 - 2023
N2 - n high precision Global Navigation Satellite Systems (GNSS) applications, it is necessary to take phase center corrections (PCC) into account. Beside these corrections for carrier phase measurements, also corrections for the codephase are necessary, so called codephase center corrections (CPC). The CPC, also known as group delay variations, are antenna dependent delays of the received codephase, which are varying with azimuth and elevation of the incoming GNSS signal. A concept for estimating absolute CPC and PCC for multi GNSS signals has been established by the Institut für Erdmessung.In this paper, the standard calibration approach with a sampling rate of 1 Hz is briefly described, which works well for PCC estimation. The main challenge of this approach for estimating repeatable CPC patterns is the significantly higher noise to pattern ratio in the observations compared to PCC determination. Therefore, an alternative processing strategy is presented in this contribution. By increasing the sampling rate to 10 Hz, the empirical mode decomposition can be used to reduce the noise of the input observations by maintaining all pattern information. With this method, the calibration repeatability is improved by 46% to 60% for GPS and Galileo C1C signals for a geodetic antenna. Moreover, the estimated pattern is validated in the positioning domain with a single point positioning approach. By considering the estimated CPC the accuracy of the height component can be improved.
AB - n high precision Global Navigation Satellite Systems (GNSS) applications, it is necessary to take phase center corrections (PCC) into account. Beside these corrections for carrier phase measurements, also corrections for the codephase are necessary, so called codephase center corrections (CPC). The CPC, also known as group delay variations, are antenna dependent delays of the received codephase, which are varying with azimuth and elevation of the incoming GNSS signal. A concept for estimating absolute CPC and PCC for multi GNSS signals has been established by the Institut für Erdmessung.In this paper, the standard calibration approach with a sampling rate of 1 Hz is briefly described, which works well for PCC estimation. The main challenge of this approach for estimating repeatable CPC patterns is the significantly higher noise to pattern ratio in the observations compared to PCC determination. Therefore, an alternative processing strategy is presented in this contribution. By increasing the sampling rate to 10 Hz, the empirical mode decomposition can be used to reduce the noise of the input observations by maintaining all pattern information. With this method, the calibration repeatability is improved by 46% to 60% for GPS and Galileo C1C signals for a geodetic antenna. Moreover, the estimated pattern is validated in the positioning domain with a single point positioning approach. By considering the estimated CPC the accuracy of the height component can be improved.
KW - Absolute antenna calibration
KW - Group delay variation
KW - codephase center corrections (CPC)
KW - Empirical Mode Decomposition
KW - Empirical mode decomposition
KW - Group delay variations
KW - Codephase center corrections
UR - http://www.scopus.com/inward/record.url?scp=85172691396&partnerID=8YFLogxK
U2 - 10.1007/1345_2022_159
DO - 10.1007/1345_2022_159
M3 - Conference contribution
SN - 9783031295065
T3 - International Association of Geodesy Symposia
SP - 333
EP - 343
BT - Geodesy for a Sustainable Earth
A2 - Freymueller, Jeffrey T.
A2 - Sánchez, Laura
PB - Springer Nature
ER -