Extension and Optimization of the Local Geodetic Network at the Onsala Space Observatory
Paper in proceedings, 2019

Since May 2017, the Onsala Space Observatory (OSO) has hosted the Onsala twin telescopes (OTT), two identical telescopes fulfilling the VGOSspecifications. The local geodetic ground network has to be extended to the area around the OTT to provide local tie vectors for combining different geodetic space techniques at the observatory. Furthermore, this network is essential for monitoring the temporal and spatial stability of the new radio telescopes. Both network configuration and measurement uncertainties of the terrestrial observations have a strong impact on the obtainable accuracy of the reference points. Network optimization procedures help to avoid misconfigurations and provide suitable network configurations. For OSO, an extended ground network and an optimal observation schedule are derived that fulfill the accuracy requirements for monitoring processes. The observation schedule, derived by a second order design optimization, focuses on a practical experience when using modern geodetic instruments.

Second Order Design

Integer Least-Squares

Criterion Matrix

Local Ties

Network Optimization


Cornelia Eschelbach

Frankfurt University of Applied Sciences

Michael Lösler

Frankfurt University of Applied Sciences

Rüdiger Haas

Chalmers, Space, Earth and Environment, Onsala Space Observatory, Space Geodesy and Geodynamics

Henrik Fath

Frankfurt University of Applied Sciences

IVS 2018 General Meeting Proceedings "Global Geodesy and the Role of VGOS – Fundamental to Sustainable Development"

Vol. NASA/CP-2019-219039 27-31

10th IVS General Meeting
Longyearbyen, Svalbard and Jan Mayen,

Driving Forces

Sustainable development


Basic sciences


Onsala Space Observatory

Subject Categories

Earth and Related Environmental Sciences

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