Inverse modelling of GNSS multipath for sea level measurements - initial results
Paper in proceedings, 2016

We present a new method to retrieve sea level from GNSS SNR data that relies upon inverse modelling of the detrended SNR. This method can simultaneously use data from both GPS and GLONASS, and both L1 and L2 frequencies, to improve the solution with respect to prior studies. Results from the GNSS-R installation at Onsala Space Observatory are presented and the retrieved sea level heights are compared with a co-located pressure mareograph. The method is found to give an RMS error of 1.8 cm. The results are also compared against previous implementations of GNSS tide gauges and found to have lower RMS than both the earlier SNR algorithm and also the dual receiver, phase delay method.

GNSS-R

Reflectometry

Tide gauge

Inverse modelling

Sea level

Author

Joakim Strandberg

Chalmers, Earth and Space Sciences, Space Geodesy and Geodynamics

Thomas Hobiger

Chalmers, Earth and Space Sciences, Space Geodesy and Geodynamics

Rüdiger Haas

Chalmers, Earth and Space Sciences, Space Geodesy and Geodynamics

Proceedings of the International Geoscience and Remote Sensing Symposium (IGARSS) Volume 2016-November, 1 November 2016, Article number 7729479, Pages 1867-1869 36th IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2016; Beijing; China; 10 - 15 July 2016

Vol. 2016-November 1867-1869 7729479

Subject Categories

Remote Sensing

Oceanography, Hydrology, Water Resources

Signal Processing

Roots

Basic sciences

Infrastructure

Onsala Space Observatory

DOI

10.1109/IGARSS.2016.7729479

ISBN

9781509033324

More information

Created

10/7/2017