Medicina and Noto VLBI Radiotelescopes: gravitational deformations evaluated with terrestrial laser scanning
Abstract
- Publication:
-
Proceedings of the 18th European VLBI for Geodesy and Astrometry Work Meeting
- Pub Date:
- July 2007
- Bibcode:
- 2007evga.conf....4M
- Keywords:
-
- Gravitational deformations;
- laser scanning;
- VLBI radiotelescope;
- terrestrial surveying therefore installed nearby the antenna secondary focus allowing a complete laser coverage of the inner dish surface at different elevations. The raw data acquired with the laser scanner intrinsically define clouds of points expressed with respect to an instrumental reference system; in order to connect the observed points to an external reference system;
- it is necessary to relatively align the different clouds using tie points and moreover ad hoc terrestrial surveys are required to frame the laser survey in to the external reference system. The surveys and their results will be presented;
- along with the data analysis procedure and the most recently estimated deformations.