Inverse modeling of ground-based GNSS-r - Results and new possibilities

• Published in: 2017 IEEE International Geoscience and Remote Sensing Symposium (IGARSS)
• Main Authors: Hobiger, Thomas, Strandberg, Joakim, Haas, Rüdiger
• Language: unknown
• Published: 2017
• Subjects: Geotechnical Engineering; Other Physics Topics; Geophysics; GNSS-R; troposphere delay; snow; inverse modeling; ice; sea-level; ground-based instruments; Sea ice
• Online Access: https://doi.org/10.1109/IGARSS.2017.8127547; https://research.chalmers.se/en/publication/f6ef09d2-4507-4bca-b321-39f29804274b

Inverse modeling of ground-based GNSS reflections has the potential to improve existing GNSS-R applications and lead to novel concepts for retrieving geophysical parameters around existing or deliberately built GNSS sites. As we will show in this paper, consistent, accurate and precise determination of sea-surface heights can be realized. Moreover, we demonstrate that it is possible to detect sea-ice freeze states at coastal GNSS sites. In addition, it will be shown how the inverse modeling approach can be used for self-calibration of troposphere delays, which would otherwise bias the target parameters and need to be corrected for by external measurements or data-sets.