1. Agrosphere InstituteForschungszentrum Jülich GmbHJuelichGermany
2. Department Earth Surface processes, GFZ German Research Centre for GeosciencesPotsdamGermany
3. Institute for Industrial Data Processing and CommunicationMannheim University of Applied SciencesMannheimGermany
4. Institute of Geodesy and GeoinformationUniversity of BonnBonnGermany