Lehrinhalte
The module covers measurement principles and technical components of the most important space- based geodetic observation techniques, namely Very Long Baseline Interferometry (VLBI), Satellite and Lunar Laser Ranging (SLR/LLR), Global Navigation Satellite Systems (GNSS, including GPS, GLONASS, GALILEO, Beidou, …), and Doppler Orbitography and Radio positioning Integrated by Satellite (DORIS). In addition, gravity field satellite missions and innovative future concepts will be covered. Techniques to determine the three pillars of space geodesy: the Earth’s geometry and deformation (including sea surfaces), the Earth orientation and rotation, and the Earth gravity field and its temporal variations (mass transport) will be discussed. Special attention will be paid to the combination of the various techniques to determine global geodetic reference frames as an essential product of global geodesy. Other topics include models of processes deforming the Earth‘s surface like plate tectonics, post-glacial rebound, solid Earth tides, surface loads (ocean, atmosphere, ice, ...) and the importance of deformation measurements for natural hazards and early warning systems (deformation by earthquakes, landslides, sea level change, volcano monitoring, subsidence). Geodetic and geophysical models of the Earth orientation and rotation such as effects of Sun, Moon and planets, and of the different components of the Earth system like ocean, atmosphere, and hydrosphere will be introduced.
Exercises' objectives:
• Learn more about the main space geodetic techniques (GNSS, VLBI, …): how to get from the actual observations to the final geodetic products with a focus on VLBI as an example
• Learn and understand how to process VLBI data by using a sophisticated software package
• Consolidate and apply theoretical knowledge from the lecture
• Learn about GNSS signal structure and data processing
• Time series analysis of high-precision GNSS estimates
• Learning progress is further ensured through individual feedback on homework assignments
