A5094046496- GNSS positioning and interference
- Radio Astronomy Observations and Technology
- Geophysics and Gravity Measurements
- Astronomical Observations and Instrumentation
- Superconducting and THz Device Technology
Yebes Observatory
2024
Spanish National Observatory
2024
Geodetic and astrometric VLBI has entered a new era with the implementation of Global Observing System (VGOS). These broadband dual linear polarization observations aim at an accuracy station coordinates 1 mm reference frame stability 0.1 mm/year. Although extended brightness distribution many radio-loud active galactic nuclei observed during geodetic sessions is resolved by interferometer, established processing chain still treats these objects as point sources. We investigate impact source...
Abstract Radio telescopes with dual linearly polarized feeds regularly participate in Very Long Baseline Interferometry. One example is the VLBI Global Observing System (VGOS), which employed for high‐precision geodesy and astrometry. In order to achieve maximum signal‐to‐noise ratio, visibilities of all four polarization products are combined Stokes I before fringe‐fitting. Our aim improve cross‐polarization bandpass calibration, an essential processing step this context. Here we...
Radio telescopes with dual linearly polarized feeds regularly participate in Very Long Baseline Interferometry (VLBI). One example is the VLBI Global Observing System (VGOS), which employed for high-precision geodesy and astrometry. In order to achieve maximum signal-to-noise ratio, visibilities of all four polarization products are combined Stokes I before fringe-fitting. Our aim improve cross-polarization bandpass calibration, an essential processing step this context. Here we investigate...
Context. The current algorithms used for the calibration and analysis of very long baseline interferometry (VLBI) networks that only use linear polarizers (as is case VLBI Global Observing System, VGOS) do not properly account instrumental source-intrinsic polarimetry, which can cause errors in geodetic astronomical products. Aims. We aim to develop a pipeline interferometers observe basis polarization, as VGOS. products from this be obtain valuable full-polarization information observed...