The Faculty of Agriculture: Browsing Landwirtschaftliche Fakultät by Classification (DDC) "ddc:526.1"
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2nd International Conference on Machine Control & Guidance: proceedings ; March 9 - 11, 2010
Lammers, Peter Schulze; Kuhlmann, Heiner (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, ... -
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 ... -
Aiming at self-calibration of terrestrial laser scanners using only one single object and one single scan
Holst, Christoph; Kuhlmann, Heiner (2014-12-05)When using terrestrial laser scanners for high quality analyses, calibrating the laser scanner is crucial due to unavoidable misconstruction of the instrument leading to systematic errors. Consequently, the development of ... -
Analyse der Konfiguration bei der Approximation ungleichmäßig abgetasteter Oberflächen auf Basis von Nivellements und terrestrischen Laserscans
Holst, Christoph (2015)Seit einigen Jahren unterliegt der Bereich der Ingenieurgeodäsie einem starken Wandel, da sich diese Disziplin generell den stetig weiterentwickelnden, anwendungsbezogenen Problemstellungen widmet. Unter diesen Aspekten ... -
Analysis and mitigation of site-dependent effects in static and kinematic GNSS applications
Zimmermann, Florian (2020)Satellitensignale unterliegen auf ihrem Weg von der Satelliten- zur Empfangsantenne einer Vielzahl an Einflüssen die zu Abweichungen führen. Heutzutage stellen in vielen Anwendungsbereichen insbesondere die stationsspezifischen ... -
The application of impact factors to scheduling VLBI Intensive sessions with twin telescopes
Leek, Judith (2015)This thesis deals with the scheduling of special purpose, 1h-long VLBI sessions, so-called Intensives, and its further extension by twin radio telescopes. The daily VLBI Intensive measurements make an important contribution ... -
Assessing people´s early warning response capability to inform urban planning interventions to reduce vulnerability to tsunamis: case study of Padang City, Indonesia
Setiadi, Neysa Jacqueline (2014)In the last decade, more emphasis is given on the human aspect of early warning or the attribute of “people-centered” early warning systems. This study seeks to better understand the specific conditions that shape people´s ... -
Atmospheric refraction and turbulence in VLBI data analysis
Halsig, Sebastian (2018)The progress in further improving the quality of results derived by space-geodetic techniques observing in the radio frequency domain, such as Very Long Baseline Interferometry (VLBI) or Global Navigation Satellite Systems ... -
Automatic optimization of height network configurations for detection of surface deformations
Holst, Christoph; Eling, Christian; Kuhlmann, Heiner (2013-05-18)Levellings are performed to observe height changes of different epochs at discrete surveying points. A reliable estimation of surface deformations by a bivariate polynomial needs a sufficient configuration of the underlying ... -
Automatische, hochaufgelöste 3D-Phänotypisierung von Trauben und Beeren der Weinrebe unter Feldbedingungen
Rose, Johann Christian (2020)<em>Pilzwiderstandsfähige Sorten (PIWI) </em>sind eine der Innovationen im Weinbau. Das Projekt <em>Novel Viticulture Systems for sustainable production and products (NoViSys)</em> kombiniert die PIWIs zur Effizienzsteigerung ... -
Biased and unbiased estimates based on laser scans of surfaces with unknown deformations
Holst, Christoph; Artz, Thomas; Kuhlmann, Heiner (2014-10-02)The estimates based on laser scans of surfaces with unknown deformations are biased and not reproducible when changing the scanning geometry. While the existence of a bias is only disadvantageous at some applications, ... -
Calibration of Terrestrial Laser Scanners: Kalibrierung terrestrischer Laserscanner
Holst, Christoph; Neuner, Hans; Wieser, Andreas; Wunderlich, Thomas; Kuhlmann, Heiner (2016)The calibration of a laser scanner is necessary to reduce systematic errors in the acquired point cloud. Furthermore, calibrating laser scanners is motivated by the need of users to access up-to-date quality information. ... -
Challenges and present fields of action at laser scanner based deformation analyses
Holst, Christoph; Kuhlmann, Heiner (2016-03-31)Due to improved laser scanning technology, laser scanner based deformation analyses are presently widespread. These deformation analyses are no longer based on individual points representing the deformation of an object ... -
Coestimating long-term temporal signals to reduce the aliasing effect in parametric geodetic mean dynamic topography estimation
Brockmann, Jan Martin; Borlinghaus, Moritz; Neyers, Christian; Schuh, Wolf-Dieter (2022-06-16)The geodetic estimation of the mean dynamic ocean topography (MDT) as the difference between the mean of the sea surface and the geoid remains, despite the simple relation, still a difficult task. Mainly, the spectral ... -
Convex optimization for inequality constrained adjustment problems
Roese-Koerner, Lutz Rolf (2015)Whenever a certain function shall be minimized (e.g., a sum of squared residuals) or maximized (e.g., profit) optimization methods are applied. If in addition prior knowledge about some of the parameters can be expressed ... -
Design of frequency selective filters for non-equispaced data
Schuh, Wolf-Dieter; Franken, Jessica; Brockmann, Jan Martin; Esch, Christina; Köhler, Joël; Gutjahr, Karlheinz (2018-07-22)Modern sensors and satellite missions deliver huge data sets and long time series of observations. In the most cases equispaced time series are collected. Filtering of time series is a standard task in data analysis. ... -
Determination of sub-daily earth rotation parameters from VLBI observations
Artz, Thomas (2015)The work presented deals with the determination of sub-daily Earth Rotation Parameters (ERPs) from Very Long Baseline Interferometry (VLBI) observations. Monitoring and interpreting the Earth's rotation variations in general ... -
Development of a one-step 3D approach for the phase unwrapping process in a D-InSAR stack based on SBAS interferograms
Esch, Christina (2020)Differential Interferometric Synthetic Aperture Radar (D-InSAR) is a unique technique to detect and map deformations of the Earth's surface over large temporal and spatial scales. Processing a whole stack of multitemporal ... -
Digital filtering algorithms for decorrelation within large least squares problems
Siemes, Christian (2012)The GOCE (Gravity Field and steady-state Ocean Circulation Explorer) mission is dedicated to the determination of the Earth's gravity field. During the mission period of at least one year the GOCE satellite will collect ... -
Direct Georeferencing for Portable Mapping Systems: In the Air and on the Ground
Klingbeil, Lasse; Eling, Christian; Heinz, Erik; Wieland, Markus (2017-11)During the last few years, the acquisition of geometric information about objects by using a moving sensor platform has gained increasing popularity in the surveying community. A large number of companies offer vehicle-based ...