Publikationen: Publikationen: Recent submissions
Now showing items 21-29 of 29
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Estimation of Focal Length Variations of a 100-m Radio Telescope's Main Reflector by Laser Scanner Measurements
Holst, Christoph; Zeimetz, Philipp; Nothnagel, Axel; Schauerte, Wolfgang; Kuhlmann, Heiner (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 ... -
Empirical stochastic model of detected target centroids: Influence on registration and calibration of terrestrial laser scanners
Medić, Tomislav; Holst, Christoph; Janssen, Jannik; Kuhlmann, Heiner (2019-03-22)The target-based point cloud registration and calibration of terrestrial laser scanners (TLSs) are mathematically modeled and solved by the least-squares adjustment. However, usual stochastic models are simplified to a ... -
Investigations on the Influence of Antenna Near-field Effects and Satellite Obstruction on the Uncertainty of GNSS-based Distance Measurements
Zimmermann, Florian; Eling, Christian; Kuhlmann, Heiner (2016-03-31)Antenna near-field effects are one of the accuracy limiting factors on GNSS-based distance measurements. In order to analyse these influences, a measurement campaign at an EDM calibration baseline site with optimum GNSS ... -
Accurate georeferencing of TLS point clouds with short GNSS observation durations even under challenging measurement conditions
Zimmermann, Florian; Holst, Christoph; Klingbeil, Lasse; Kuhlmann, Heiner (2018-08-29)The accuracy of georeferenced TLS point clouds is directly influenced by site-dependent GNSS effects, deteriorating the accuracy of the ground control point coordinate estimation. Especially under challenging GNSS ... -
Can we model the effect of observed sea level rise on tides?
Schindelegger, Michael; Green, Mattias; Wilmes, Sophie-Berenice; Haigh, Ivan (2018-06-07)The link between secular changes in the lunar semidiurnal ocean tide (M2) and relative sea level rise is examined based on numerical tidal modeling and the analysis of long-term sea level records from Europe, Australia, ... -
Analysis of Different Reference Plane Setups for the Calibration of a Mobile Laser Scanning System
Heinz, Erik; Eling, Christian; Wieland, Markus; Klingbeil, Lasse; Kuhlmann, Heiner (2017)The discipline of engineering geodesy is currently subject to a paradigmatic change because the measuring of carefully selected single points is progressively replaced by an area-based acquisition of structures in form of ... -
Development, Calibration and Evaluation of a Portable and Direct Georeferenced Laser Scanning System for Kinematic 3D Mapping
Heinz, Erik; Eling, Christian; Wieland, Markus; Klingbeil, Lasse; Kuhlmann, Heiner (2016-01-21)In recent years, kinematic laser scanning has become increasingly popular because it offers many benefits compared to static laser scanning. The advantages include both saving of time in the georeferencing and a more ... -
Dealing with systematic laser scanner errors due to misalignment at area-based deformation analyses
Holst, Christoph; Medić, Tomislav; Kuhlmann, Heiner (2018-03-07)The ability to acquire rapid, dense and high quality 3D data has made terrestrial laser scanners (TLS) a desirable instrument for tasks demanding a high geometrical accuracy, such as geodetic deformation analyses. However, ... -
Management support by optimization-based trade-off analysis: the example of biodiesel crop production
Lautenbach, Sven; Volk, Martin; Strauch, Michael; Whittaker, Gerald; Seppelt, Ralf (2014)Modeling in decision support applications has often been used to compare outcomes between alternative scenarios of decision options. The introduction of optimization methods enable the comparison of a very large number of ...