[Back]

M. Nickola, A. de Witt, R. Botha, H. Krasna, C. Jacobs, M. Schartner, L. Combrinck, J. Böhm:
"HartRAO local tie measurements: VLBI and ground survey";
Talk: 24th Meeting of the European VLBI Group for Geodesy and Astrometry, Gran Canaria, Spain; 2019-03-17 - 2019-03-19.

A first short baseline VLBI experiment between the Hartebeesthoek site´s 26-m legacy and co-located 15-m radio telescopes has been conducted. Such short baseline experiments allow for determining the local tie between the telescopes. It also allows for discovering instrumental effects, as the telescopes share a common location, atmosphere and, for future experiments, a common clock. Once the VGOS telescope has been furnished with receivers, it will be included in these short baseline sessions. The local automated site tie system at HartRAO is currently being implemented and tested. Measurements to various on-site GNSS reference stations, NASA and Roscosmos SLRs as well as to various reference piers are being performed on a regular basis towards fully automating the system. The Hartebeesthoek site´s 26-m, 15-m and VGOS radiotelescopes will form part of these local tie measurements in due course. The methodology of these two approaches to local tie measurement will be presented and results will be analysed and compared.

http://www.oan.es/evga2019/EVGA2019_PDF/P206_EVGA2019_Nickola.pdf