• Validation of the EGSIEM GRACE gravity fields using GNSS coordinate timeseries and in-situ ocean bottom pressure records 

  Chen, Qiang; Poropat, Lea; Zhang, Liangjing; Dobslaw, Henryk; Weigelt, Matthias; van Dam, Tonie (Basel : MDPI AG, 2018)

  Over the 15 years of the Gravity Recovery and Climate Experiment (GRACE) mission, various data processing approaches were developed to derive time-series of global gravity fields based on sensor observations acquired from ...
• Wave impact pressures on stepped revetments 

  Kerpen, Nils B.; Schoonees, Talia; Schlurmann, Torsten (Basel : MDPI AG, 2018)

  The wave impacts on horizontal and vertical step fronts of stepped revetments is investigated by means of hydraulic model tests conducted with wave spectra in a wave flume. Wave impacts on revetments with relative step ...
• Classification of landslide activity on a regional scale using persistent scatterer interferometry at the Moselle Valley (Germany) 

  Kalia, Andre Cahyadi (Basel : MDPI AG, 2018)

  Landslides are a major natural hazard which can cause significant damage, economic loss, and loss of life. Between the years of 2004 and 2016, 55,997 fatalities caused by landslides were reported worldwide. Up-to-date, ...
• PPP-based Swarm kinematic orbit determination 

  Ren, L.; Schön, S. (Göttingen : Copernicus GmbH, 2018)

  The Swarm mission of the European Space Agency (ESA) offers excellent opportunities to study the ionosphere and to provide temporal gravity field information for the gap between the Gravity Recovery and Climate Experiment ...
• Junction extraction by artificial neural network system – Jeans 

  Barsi, A.; Heipke, C.; Willrich, F. (London : International Society for Photogrammetry and Remote Sensing, 2002)

  The paper presents a road junction operator, which was developed for medium resolution black-and-white orthoimages. The operator uses a feed-forward neural network applied for a running window to decide whether it contains ...
• Modelling forest snow processes with a new version of WaSiM 

  Förster, K.; Garvelmann, J.; Meißl, G.; Strasser, U. (Abingdon : Taylor and Francis Ltd., 2018)

  We present a new model extension for the Water balance Simulation Model, WaSiM, which features (i) snow interception and (ii) modified meteorological conditions under coniferous forest canopies, complementing recently ...
• GRACETOOLS - GRACE gravity field recovery tools 

  Darbeheshti, N.; Wöske, F.; Weigelt, M.; McCullough, C.; Wu, H. (Basel : MDPI AG, 2018)

  This paper introduces GRACETOOLS, the first open source gravity field recovery tool using GRACE type satellite observations. Our aim is to initiate an open source GRACE data analysis platform, where the existing algorithms ...
• Impact of groundtrack pattern of a single pair mission on the gravity recovery quality 

  Iran-Pour, S.; Weigelt, M.; Amiri-Simkooei, A.; Sneeuw, N. (Basel : MDPI AG, 2018)

  For future gravity satellite missions, aliasing of high frequency geophysical signals into the lower frequencies is one of the most challenging obstacles to recovering true gravity signals, i.e., to recover the truth. ...
• Traceability of the Hannover FG5X-220 to the SI units 

  Schilling, Manuel; Timmen, Ludger (Cham : Springer, 2016-06-28)

  The absolute measurement of g is currently realized through the laser interferometric measurement of a free falling retro-reflector. The Micro-g LaCoste FG5X is a free-fall gravimeter with a laser interferometer in ...
• Verification and correction of the hydrologic routing in the soil and Water Assessment Tool 

  Nguyen, Van Tam; Dietrich, Jörg; Uniyal, Bhumika; Tran, Dang An (Basel : MDPI AG, 2018)

  The Soil andWater Assessment Tool (SWAT) is one of the most widely used eco-hydrological models. SWAT has been undergoing constant changes since its development. However, compartment review and testing of SWAT, especially ...
• On the sensitivity of the parameters of the intensity-based stochastic model for terrestrial laser scanner. Case study: B-spline approximation 

  Kermarrec, Gael; Alkhatib, Hamza; Neumann, Ingo (Basel : MDPI AG, 2018)

  For a trustworthy least-squares (LS) solution, a good description of the stochastic properties of the measurements is indispensable. For a terrestrial laser scanner (TLS), the range variance can be described by a power law ...
• Traceability of the Hannover FG5X-220 to the SI units 

  Schilling, Manuel; Timmen, Ludger (2015-06-22)

  The absolute measurement of g is currently realized through the laser interferometric measurement of a free falling retro-reflector. The Micro-g LaCoste FG5X is a free-fall gravimeter with a laser interferometer in ...
• Accuracy estimation of the IfE gravimeters Micro-g LaCoste gPhone-98 and ZLS Burris Gravity Meter B-64 

  Schilling, Manuel; Gitlein, Olga (Cham : Springer, 2015-06-20)

  Presently, modern spring gravimeters are the most flexible, technically simple, and comparatively cheap solution for recordings over extended time periods in contrast to superconducting gravimeters. We investigate the ...
• Continuous Navigation of an Inland Vessel with a Synthetic GNSS Antenna 

  Kersten, Tobias; Ren, Le; Schön, Steffen (Bonn : DGON, 2018-11-15)

  This paper describes a concept to obtain a continuous navigation and position solution of inland vessels based on a multi-GNSS antenna system. Also known as, “Virtual Receiver” we utilize this approach as an alternative ...
• A Virtual Receiver Concept for Continuous GNSS based Navigation of Inland Vessels 

  Kersten, Tobias; Ren, Le; Schön, Steffen (Noordwijk, The Netherlands : ESA/ESTEC, 2018-12-06)

  Efficient and economic guidance of inland vessels relies on a continuous, available, reliable and precise GNSS navigation solution. Hence, below other side effects, this is especially critical when passing beneath bridges ...
• Solute Transport in Heterogeneous Soil with Time-Dependent Boundary Conditions 

  Cremer, Clemens J.M.; Neuweiler, Insa; Bechtold, Michel; Vanderborght, Jan (McLean, VA : GeoScienceWorld, 2016)

  We investigate the effect of dynamic boundary conditions on solute transport in unsaturated, heterogeneous, bimodal porous media. Solute transport is studied with two-dimensional numerical flow and transport models for ...
• A systematic approach to offshore wind turbine jacket predesign and optimization: geometry, cost, and surrogate structural code check models 

  Häfele, Jan; Damiani, Rick R.; King, Ryan N.; Gebhardt, Cristian G.; Rolfes, Raimund (Oldenburg : European Academy of Wind Energy (EAWE), 2018)

  The main obstacles in preliminary design studies or optimization of jacket substructures for offshore wind turbines are high numerical expenses for structural code checks and simplistic cost assumptions. In order to create ...
• Thermal IR imaging: Image quality and orthophoto generation 

  Sledz, A.; Unger, J.; Heipke, C. (London : International Society for Photogrammetry and Remote Sensing, 2018)

  This paper deals with two aspects of photogrammetric processing of thermal images: image quality and 3D reconstruction quality. The first aspect of the paper relates to the influence of day light on Thermal InfraRed (TIR) ...
• Systematic geometric image errors of very high resolution optical satellites 

  Jacobsen, K. (London : International Society for Photogrammetry and Remote Sensing, 2018)

  Very high resolution optical satellites are imaging the object space by a combination of CCD-lines in one direction and by time, speed and satellite rotation in the other direction. The combination of the CCD-lines usually ...
• Identification of similarities and prediction of unknown features in an urban street network 

  Feuerhake, U.; Wage, O.; Sester, M.; Tempelmeier, N.; Nejdl, W.; Demidova, E. (London : International Society for Photogrammetry and Remote Sensing, 2018)

  Accurate predictions of the characteristics of urban streets in particular with respect to the typical traffic situations are crucial for numerous real world applications such as navigation, scheduling of logistic and ...

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