Results 1 to 10 of about 1,447 (100)
Inter-Comparison of UT1-UTC from 24-Hour, Intensives, and VGOS Sessions during CONT17 [PDF]
Sensors, 2022 This work focuses on the assessment of UT1-UTC estimates from various types of sessions during the CONT17 campaign. We chose the CONT17 campaign as it provides 15 days of continuous, high-quality VLBI data from two legacy networks (S/X band), i.e ...
Harald Schuh +2 more
exaly +5 more sources
New Cable Delay Measurement System for VGOS Stations [PDF]
Sensors, 2022 This paper presents the new cable delay measurement system (CDMS) designed at Yebes Observatory (IGN, Spain), which is required for the VLBI Global Observing System (VGOS) stations.
María Patino-Esteban +2 more
exaly +5 more sources
Observing UT1-UTC with VGOS [PDF]
Earth, Planets and Space, 2021 We present first results for the determination of UT1-UTC using the VLBI Global Observing System (VGOS). During December 2019 through February 2020, a series of 1 h long observing sessions were performed using the VGOS stations at Ishioka in Japan and ...
Matthias Schartner +2 more
exaly +3 more sources
Remote SensingThe Very Long Baseline Interferometry Global Observing System (VGOS), a global network of stations equipped with small-diameter, fast-slewing antennas and broadband receivers, is primarily utilized for geodesy and astrometry.
Fengchun Shu, Yan Sun, Yidan Huang
exaly +4 more sources
A Comparative Study of VTEC Estimates Derived From S/X VLBI and VGOS Observations
Space WeatherThe ionosphere, which strongly varies in time and space, is one of the largest error sources for microwave measurements, if not accounted for accurately.
Grzegorz Kłopotek, Benedikt Soja
exaly +3 more sources
A Tri-Band Cooled Receiver for Geodetic VLBI [PDF]
Sensors, 2021 This paper shows a simultaneous tri-band (S: 2.2–2.7 GHz, X: 7.5–9 GHz and Ka: 28–33 GHz) low-noise cryogenic receiver for geodetic Very Long Baseline Interferometry (geo-VLBI) which has been developed at Yebes Observatory laboratories in Spain.
José A. López-Pérez +16 more
doaj +2 more sources
Inhibition of Cronobacter sakazakii in an infant simulator of the human intestinal microbial ecosystem using a potential synbiotic [PDF]
Frontiers in Microbiology, 2022 Powdered infant formula (PIF) can be contaminated with Cronobacter sakazakii, which can cause severe illnesses in infants. Synbiotics, a combination of probiotics and prebiotics, could act as an alternative control measure for C.
Alfred Ke +3 more
doaj +2 more sources
Optimal antenna locations of the VLBI Global Observing System for the estimation of Earth orientation parameters [PDF]
Earth, Planets and Space, 2020 To support monitoring subtle effects in the Earth system such as a mean sea level rise of 3 mm/year, a next-generation VLBI system, the VLBI Global Observing System (VGOS), has been developed and a new VGOS station network is being built.
Matthias Schartner +2 more
doaj +2 more sources
Evaluation of the first three years of Vgos 24 h sessions using a Kalman filter with C5++
Earth, Planets and Space, 2023 We analyzed the first three years of VGOS 24 h sessions, and evaluated the performance in terms of Earth orientation parameters (EOP) and station positions.
Periklis-Konstantinos Diamantidis +1 more
doaj +2 more sources
Optimizing VGOS observations using an SNR-based scheduling approach [PDF]
Earth, Planets and SpaceThe geodetic and astrometric very long baseline interferometry (VLBI) community is in the process of upgrading its existing infrastructure with the VLBI Global Observing System (VGOS). The primary objective of VGOS is to substantially boost the number of
Matthias Schartner +8 more
doaj +2 more sources