Arthur Niell: “Progress in VGOS observing and analysis”

Arthur Niell: MIT Haystack Observatory


Abstract:​
​The VLBI Geodetic Observing System (VGOS) network is filling out, with seven sites in five countries already contributing to the broadband measurements. Several more of the high-speed, high-efficiency antennas are operating in S/X mode or are close to completion, but their participation in the VGOS observations will be delayed for lack of the broadband signal chain. Still, it is hoped to have a network of up to fifteen VGOS  antennas operating several days per week by 2020.

While the new antennas and broadband instrumentation are a departure from the traditional geodetic VLBI technology, the analysis of the acquired observations has required an evolution of the traditional software to be able to process the new capabilities.

Beginning in 2015 planned bi-weekly observing sessions using the two NASA prototype VGOS systems were begun in order to provide operations practice and a data series for analysis development and evaluation. Beginning in 2016 the Kokee VGOS system was added, followed by Wettzell, Yebes, Ishioka, and Onsala. The
series has been essential for improving operations precedures and reliability and for addressing new  correlation and analysis requirements.

In this talk I will provide an overview of the VGOS technology and analysis development, discuss the current observing plans and results to date, and describe some of the challenges to implementing a robust operational program.​
Category Seminar
Location: Seminar room, Onsala Space Observatory
Starts: 28 May, 2018, 10:30
Ends: 28 May, 2018, 11:30

Published: Fri 18 May 2018.