Unifying Numerical Weather Prediction and Precise Orbit Determination of Global Navigation Satellite Systems

Academy of Finland funded research project.

Accurate knowledge of the Global Navigation Satellite System (GNSS) satellite orbits plays a key role in all satellite-based geoscientific research and in a range of services, such as mobile positioning and interactive maps. Moreover, GNSS-derived observables are informative of the atmospheric state in Numerical Weather Prediction (NWP), exploiting a wide range of Earth Observations (EO). This project aims to test the following hypothesis: it is possible to bring Precise Orbit Determination (POD) of GNSS satellites significantly closer to data assimilation in NWP and the use of EO.