Collaborative Efforts in GNSS Antenna Calibration: Evaluating Latitude-Dependent Position Deviations Using IGS Ring Calibration Data
- verfasst von
- Johannes Kröger, Tobias Kersten, Andria Bilich, Igor Sutyagin, Steffen Schön
- Abstract
Ensuring consistent Phase Center Corrections (PCC) for GNSS receiving antennas presents a significant challenge, primarily due to the lack of standardized benchmarks for consistent evaluation across various calibration institutions and methods. To address this challenge, the IGS Ring Calibration Campaign (IGS ringCalVal) has been launched as a global collaborative effort, engaging nine different calibration institutions. This comprehensive initiative aims to compare results from different calibration techniques and establish a robust framework for quality assessment. As part of this campaign, six antennas from various manufacturers have undergone calibration.
In this work, we present selected calibration results at the pattern level using our introduced comparison metrics. Since users and network providers are primarily interested in the effects of different PCC sets (dPCC) on geodetic parameters such as topocentric coordinate differences, receiver clock error, and tropospheric parameters, we conduct a detailed analysis using the simulation approach introduced in previous contributions. We examine how the geographic location influences these variations. To this end, we evaluate the impact at IGS stations involved in the ITRF2020 realization, utilizing various linear combinations from different GNSS systems. Our findings indicate that the most significant dPCC impact is latitude-dependent, with
deviations exceeding 6 mm in the topocentric Up-component, while variations in the horizontal components are generally less than 1 mm. To further explore the connection between latitude-dependent variations and the structure of dPCC, we perform an in-depth analysis of pattern structure and its interaction with the local satellite distribution. We also examine the role of the observation period to reveal temporal variations and their link to the structures. As a final outcome, taking dPCC from the IGS ringCalVal as examples, an assessment of minimum and maximum
variations at GNSS stations involved in the ITRF2020 realization is conducted. This assessment will help to establish a rule-of-thumb for maximum acceptable deviations at the pattern level, while ensuring consistent PCC for GNSS receiving antennas at IGS
stations.- Organisationseinheit(en)
-
Institut für Erdmessung
- Externe Organisation(en)
-
National Geodetic Survey (NGS)
Topcon Positioning Systems, Livermore
- Typ
- Poster
- Publikationsdatum
- 02.09.2025
- Publikationsstatus
- Elektronisch veröffentlicht (E-Pub)
- ASJC Scopus Sachgebiete
- Ingenieurwesen (sonstige)
- Fachgebiet (basierend auf ÖFOS 2012)
- Geodäsie, Satellitengestützte Koordinatenmessung
- Ziele für nachhaltige Entwicklung
- SDG 9 – Industrie, Innovation und Infrastruktur
