Sievers-Frey, Beat
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Local uplift rates in the Swiss Alps (Wildhorn-Decke)
2015, Sievers-Frey, Beat
The Alpine uplift rates of up to 1.6 mm per year are based on geological hypotheses. The area (Saanen -) Gsteig - Sanetschpass - Sion is tectonically strongly folded and it is seismically active in the southern part. This paper describes the measurement (with GNSS) and calculation of high accurate height points in this area. This approach replaces the former method of interpolating surface uplift rates between points of the Swiss National Height Network.
Forschungsarbeiten im Bereich von LIS an den ETH Lausanne und Zürich
1986, Sievers-Frey, Beat
In dieser Mitteilung werden drei Forschungsprojekte beschrieben, die den gemeinsamen Zweck haben, bessere Arbeitsbedingungen für EDV-Laien im Bereich der LIS zu schaffen. Diese Themen lauten: - Anwendung von Datenbankverwaltungssystemen für das Grundbuch - Datenerfassung (Punkte und Linien) im Feld mit registrierenden Tachymetern - EInsatz von grafisch-interaktiven Systemen im Bereich von LIS.
Real-time change of Swiss reference frames with swipos GIS/GEO and RTCM Coordinate Transformation Messages
2011-06-01T00:00:00Z, Sievers-Frey, Beat, Saner, Marco
Since 2007, RTCM Standard 10403.1 has allowed standardization and optimization of transmission of GNSS RTK corrections between reference stations and rovers by additionally providing so-called transformation messages. In 2009, a bachelors thesis at the University of Applied Sciences Northwestern Switzerland analyzed whether and in which scope RTCM 10403.1 forms an alternative to the swipos-GIS/GEO real-time positioning services current method, which uses real-time FINELTRA and HTRANS.
Software - Entwicklungen im Bereiche von Landinformationssystemen (insbesondere Datenbanksysteme) am Institut für Geodäsie und Photogrammetrie
1985, Sievers-Frey, Beat
Comparative baseline computation with Bernese GPS Software and Leica Geo Office as well as 3D computation of a slipping region with TRINET+
2011-06-01T00:00:00Z, Sievers-Frey, Beat, Kaiser, Sandra, Schrattner, Michael
Every year, the Institute of Geomatics Engineering (IVGI) of the University of Applied Sciences Northwestern Switzerland monitors the Schwanderbaergli deformation network near Brienz (Canton Bern) with geodetic measurements (GNSS, tachymetry, precision levelling) and evaluates the movements. Since the GNSS observations began, they have been computed using Leica Geo Office software, and adjusted first horizontally, then vertically with LTOP, together with the other measurements. For this report, a bachelors thesis computed the Schwanderbärgli deformation network using Trinet+ and compared the results to those obtained using GNSS.