The Faculty of Agriculture: Search
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Estimation of Focal Length Variations of a 100-m Radio Telescope's Main Reflector by Laser Scanner Measurements
(2012-08)
Due to gravitation, the main reflector of a radio telescope underlies a deformation which causes
a change in focal length depending on the variations of the elevation angle of the telescope. In order
to estimate these ...
Modeling the Beam Deflection of a Gantry Crane under Load
(2014-02)
Gantry cranes load and unload containers from container ships. To ensure safety and operation, the deflection of their main beams under load should be analyzed. This deflection depends on the weight of the loaded container ...
2nd International Conference on Machine Control & Guidance: proceedings ; March 9 - 11, 2010
(2010)
The importance of 3D-position sensors for the navigation of machinery on construction sites of roads, tunnels, railways, and airports has been steadily increasing over the last few years and the market
keeps growing. Also, ...
A new approach for a kinematic-dynamic determination of low satellite orbits based on GNSS observations
(2008)
A new approach for the integrated kinematical-dynamical orbit determination of low flying satellites based
on high-low GPS-SST observations is proposed. These observations are code and carrier phase measurements between ...
Simulated satellite formation flights for detecting the temporal variations of the Earth's gravity field
(2010)
In this thesis, the concept of satellite formation flight (SFF) is studied by means of simulated satellite observations. With various formation types enabling inter-satellite measurements in various directions
(e.g. ...
Gravity field refinement by radial basis functions from in-situ satellite data
(2008)
In this thesis, an integrated approach is developed for the regional refinement of global gravity field solutions. The analysis concepts are tailored to the in-situ type character of the observations provided by the new ...
Möglichkeiten der Nutzung kinematischer Satellitenbahnen zur Bestimmung des Gravitationsfeldes der Erde
(2011)
Die Extraktion von Schwerefeldinformation aus den Bahnverfolgungsdaten von Satelliten gehört zu den
frühesten wissenschaftlichen Anwendungen der Weltraumtechnik. Die Ausrüstung von Satelliten mit GPSEmpfängern
hat hier ...
An improved global gravity field model of the Earth derived from reprocessed GOCE observations with the time-wise approach
(2019)
ESA's dedicated gravity field mission GOCE (Gravity field and steady-state Ocean Circulation Explorer) successfully completed its science operations in 2013 as the first Earth Explorer mission in orbit. In 2014, the fifth ...
An improved global gravity field model from the GOCE mission: the time-wise release 6 model
(2019)
The Gravity field and steady-state Ocean Circulation Explorer (GOCE) completed its science mission to observethe Earth’s gravity field in 2013. From the collected observations, gravity gradients and tracking ...
Singular Value Decomposition and Cluster Analysis as Regression Diagnostics Tools in Geodetic VLBI
(2008)
It is well known that high-leverage observations significantly affect the estimation of parameters. So far, mainly redundancy numbers have been used for the detection of single high-leverage observations or of single ...