Combining Insar, levelling and GNSS for the estimation of 3D surface displacements

Combining Insar, levelling and GNSS for the estimation of 3D surface displacements

Fuhrmann, T. (Karlsruhe Institut für Technologie)
Cuenca, M. Caro (TNO)
Knöpfler, A. (Karlsruhe Institut für Technologie)
van Leijen, F.J. (TU Delft Mathematical Geodesy and Positioning)
Mayer, M. (Karlsruhe Institut für Technologie)
Westerhaus, M. (Karlsruhe Institut für Technologie)
Hanssen, R.F. (TU Delft Mathematical Geodesy and Positioning)
Heck, B (Karlsruhe Institut für Technologie)

Ouwehand, L. (editor)

2015

The three geodetic techniques InSAR, levelling and GNSS are complementary w.r.t. (i) the sensitivity to horizontal and vertical displacement components, (ii) the spatial and temporal resolution of the measurements and (iii) the accuracy of the resulting displacements. We present a strategy to robustly combine the displacement estimates of the three techniques with a focus on long-term, linear movements. The linear displacement rates from InSAR in ascending and descending image geometry are combined with vertical and horizontal rates from levelling and GNSS, respectively, resulting in 3D velocity vectors at a dense surface grid. The results of our combination approach indicate that it is possible to derive realistic surface movements on the sub-mm/a scale with significance.

Geen BTA classificatie

http://resolver.tudelft.nl/uuid:baa528b3-0eff-4461-9946-fb5651377cc3

https://doi.org/10.5270/Fringe2015

ESA Publication

Proceedings of the Fringe 2015 Workshop: Frascati, Italy 23–27 March 2015 (ESA SP-731, May 2015)

Fringe 2015 workshop, Rome, Italy, 2015-03-23 → 2015-03-27, Noordwijk

Institutional Repository

conference paper

© 2015 T. Fuhrmann, M. Caro Cuenca, A. Knöpfler, F.J. van Leijen, M. Mayer, M. Westerhaus, R.F. Hanssen, B Heck