High-performance clock networks and their application in geodesy

High-performance clock networks and their application in geodesy

Leitung:  Prof. Dr.-Ing. Jürgen Müller
Team:  Dr.-Ing. Hu Wu
Jahr:  2019
Förderung:  Germany’s Excellence Strategy – EXC-2123 “QuantumFrontiers” (DFG)

The rapid development of optical clocks and frequency transfer techniques provides the opportunity to compare clocks’ frequencies at the uncertainty level of 10-18. This will enable relativistic geodesy with the aimed accuracy of cm in terms of height. Clock networks are thus highly relevant to various geodetic applications, such as the realization of a height reference system and the determination of regional/global gravity fields. In this project, we aim to investigate the potential of high-performance clock networks and quantify their contributions to specific applications through dedicated simulations.  


  1. Hu Wu, Jürgen Müller (2020). Towards an International Height Reference Frame using clock networks. In: International Association of Geodesy Symposia, DOI: 10.1007/1345_2020_97

  2. Jürgen Müller, Hu Wu (2020). Using quantum optical sensors for determining the Earth’s gravity field from space. Journal of Geodesy 94(71). DOI: 10.1007/s00190-020-01401-8