Geodetic SAR for Baltic Height System Unification and Baltic Sea Level Research (SAR HSU)

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In addition to the tide gauges, sea level research nowadays is based on a number of measurement systems, which all have their own characteristics and deliver different type of observations. In order to analyze all observations they need to be available in a common reference frame.

The goals of the project are: (1) Connecting the tide gauge markers with the GNSS network geometrically in order to determine the relative vertical motion and to correct the tide gauge readings. Geodetic SAR (Sentinel 1) is used for connecting tide gauges to the GNSS network. (2) Determine a GOCE based high resolution geoid at tide gauge stations in order to deliver absolute heights of tide gauges with respect to a global equipotential surface as reference. (3) Joint analysis of geometrical and physical reference frames to make them compatible, and to determine corrections to be applied for combined analysis of geometric and physical heights.

Contact persons
Members
Keywords
SAR
GNSS
tide gauge
height systems
geoid
Duration
Research area
Other funding sources
ESA
Project partners
Technical University of Munich (PI Thomas Gruber)
Deutsches Zentrum für Luft- und Raumfahrt
Swedish Mapping, Cadastral and Land Registration Authority
Centrum Badańn Kosmicznych of the Polish Academy of Science
Tallinn University of Technology