Accuracy of velocities from repeated GPS measurements

Akarsu, V.; Sanli, D. U.; Arslan, E.

doi:https://doi.org/10.5194/nhess-15-875-2015

Articles | Volume 15, issue 4

https://doi.org/10.5194/nhess-15-875-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/nhess-15-875-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 15, issue 4

Research article

|

21 Apr 2015

Research article |

| 21 Apr 2015

Accuracy of velocities from repeated GPS measurements

V. Akarsu, D. U. Sanli, and E. Arslan

Related authors

Assessment of geodetic velocities using GPS campaign measurements over long baseline lengths

Huseyin Duman and Dogan Ugur Sanli

Nat. Hazards Earth Syst. Sci., 19, 571–582, https://doi.org/10.5194/nhess-19-571-2019,https://doi.org/10.5194/nhess-19-571-2019, 2019

Short summary

Deformation rates obtained using repeated GPS measurements from as short as 8--12h are severely biased. GIPSY processing results from a global GPS network revealed that 60--70% of the horizontal and 100% of the vertical velocities are not usable. GIPSY processing is equivalent to relative positioning in which the baseline lengths to reference stations are at several hundred kilometers. This scale requires that the session length for GPS campaigns needs to be no shorter than 24h.