Work

Characterizing Short-term Variability in VGOS Group Delay Observables

Year: 2025

Type: article

Abstract: The VLBI Global Observing System (VGOS) uses ultra-wideband linear receivers (from 2 GHz to 14 GHz) for high-precision station geodetic positioning. To achieve accurate geodetic and astrometric measurements, VGOS observes each radio source in scans as short as 7 seconds. However, group delay observables are affected by instrumental effects and potential systematic errors introduced, for instance, by atmospheric turbulence. In this poster, we perform a time-series analysis of the VGOS group delay to characterize its short-term variability to investigate its stability.

Source: Zenodo (CERN European Organization for Nuclear Research)

DOI: 10.5281/zenodo.15349206

Authors: Albentosa-Ruiz, Ezequiel, Xu, Ming Hui

Institutions: Universitat de València, GFZ Helmholtz Centre for Geosciences, Aalto University

Language: English

Topic: GNSS positioning and interference

Subfield: Aerospace Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: green

Funders: Ministerio de Ciencia, Innovación y Universidades, Generalitat Valenciana, European Research Council, Agencia Estatal de Investigación

Awards: G4039573708, G4684521243, G8469603876