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Auflistung nach Schlagwort "Calibration"

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3D geometry measurement of hot cylindric specimen using structured light

Quentin, Lorenz; Beermann, Rüdiger; Pösch, Andreas; Reithmeier, Eduard; Kästner, Markus (Bellingham, Wash. : SPIE, 2017)

We present a fringe projection system to measure glowing hot hybrid components in between production processes. For this a high power green light projector, based on TI DLP technology, is used to create the highest possible ...
A new clinopyroxene thermobarometer for mafic to intermediate magmatic systems

Wang, Xudong; Hou, Tong; Wang, Meng; Zhang, Chao; Zhang, Zhaochong; Pan, Ronghao; Marxer, Felix; Zhang, Hongluo (Göttingen : Copernicus Publications, 2021)

Clinopyroxene-only thermobarometry is one of the most practical tools to reconstruct crystallization pressures and temperatures of clinopyroxenes. Because it does not require any information of coexisting silicate melt or ...
Analysis and correction of systematic height model errors

Jacobsen, Karsten (Göttingen : Copernicus GmbH, 2016)

The geometry of digital height models (DHM) determined with optical satellite stereo combinations depends upon the image orientation, influenced by the satellite camera, the system calibration and attitude registration. ...
The benefit of 3D laser scanning technology in the generation and calibration of FEM models for health assessment of concrete structures

Yang, Hao; Xu, Xiangyang; Neumann, Ingo (Basel : MDPI AG, 2014)

Terrestrial laser scanning technology (TLS) is a new technique for quickly getting three-dimensional information. In this paper we research the health assessment of concrete structures with a Finite Element Method (FEM) ...
Calibrating spectrometers for measurements of the spectral irradiance caused by solar radiation

Schinke, Carsten; Pollex, Hendrik; Hinken, David; Wolf, Martin; Bothe, Karsten; Kröger, Ingo; Nevas, Saulius; Winter, Stefan (Sèvres : Bureau International des Poids et Mesures, 2020)

Measuring the spectral irradiance of solar radiation is required in many fields of science and technology. In this work, we present an in-depth discussion of the measuring procedure and required corrections for such ...
Calibration accuracy of laser calorimetry for common crystal geometries

Willer, Yannick; Hao, Liu; Balasa, Istvan; Ristau, Detlev (Bellingham, WA : S P I E - International Society for Optical Engineering, 2017)

An established method for precise determination of optical absorption is the so called laser calorimetry. According to ISO 115511 laser calorimetry is preferred to other photothermal test methods, because of its capability ...
Calibration-measurement unit for the automation of vector network analyzer measurements

Rolfes, I.; Will, B.; Schiek, B. (Göttingen : Copernicus GmbH, 2008)

With the availability of multi-port vector network analyzers, the need for automated, calibrated measurement facilities increases. In this contribution, a calibrationmeasurement unit is presented which realizes a repeatable ...
Characterization of a time-resolved non-contact scanning diffuse optical imaging system exploiting fast-gated single-photon avalanche diode detection

Di Sieno, Laura; Wabnitz, Heidrun; Pifferi, Antonio; Mazurenka, Mikhail; Hoshi, Yoko; Dalla Mora, Alberto; Contini, Davide; Boso, Gianluca; Becker, Wolfgang; Martelli, Fabrizio; Tosi, Alberto; Macdonald, Rainer (College Park : American Institute of Physics, 2016)

We present a system for non-contact time-resolved diffuse reflectance imaging, based on small source-detector distance and high dynamic range measurements utilizing a fast-gated single-photon avalanche diode. The system ...
Comparison concept and quality metrics for GNSS antenna calibrations: Cause and effect on regional GNSS networks

Kersten, Tobias; Kröger, Johannes; Schön, Steffen (Heidelberg : Springer, 2022)

Precise values for absolute receiver antenna phase centre corrections (PCC) are one prerequisite for high-quality GNSS applications. Currently, antenna calibrations are performed by different institutes using a robot in ...
Comparison of target-and mutual informaton based calibration of terrestrial laser scanner and digital camera for deformation monitoring

Omidalizarandi, Mohammad; Neumann, Ingo (Göttingen : Copernicus GmbH, 2015)

In the current state-of-the-art, geodetic deformation analysis of natural and artificial objects (e.g. dams, bridges,.) is an ongoing research in both static and kinematic mode and has received considerable interest by ...
Comprehensive and highly accurate measurements of crane runways, profiles and fastenings

Dennig, Dirk; Bureick, Johannes; Link, Johannes; Diener, Dmitri; Hesse, Christian; Neumann, Ingo (Basel : MDPI AG, 2017)

The process of surveying crane runways has been continually refined due to the competitive situation, modern surveying instruments, additional sensors, accessories and evaluation procedures. Guidelines, such as the ...
Contactless electromagnetic measuring system using conventional calibration algorithms to determine scattering parameters

Zelder, T.; Rabe, H.; Eul, H. (Göttingen : Copernicus GmbH, 2007)

In this paper, a contactless measuring system for the determination of the S-parameters of planar circuits is presented. With a contactless measuring system it is possible to characterise a device-under-test (DUT) embedded ...
Contactless vector network analysis using diversity calibration with capacitive and inductive coupled probes

Zelder, T.; Rolfes, I.; Eul, H. (Göttingen : Copernicus GmbH, 2007)

Contactless vector network analysis based on a diversity calibration is investigated for the measurement of embedded devices in planar circuits. Conventional contactless measurement systems based on two probes for each ...
Continuum multiscale modeling of absorption processes in micro- and nanocatalysts

Köhler, Maximilian; Junker, Philipp; Balzani, Daniel (Berlin ; Heidelberg [u.a.] : Springer, 2022)

In this paper, we propose a novel, semi-analytic approach for the two-scale, computational modeling of concentration transport in packed bed reactors. Within the reactor, catalytic pellets are stacked, which alter the ...
Development of an edge sensor based on polyview optics and laser triangulation principle

Li, Yinan; Bossmeyer, Hagen; Kästner, Markus; Reithmeier, Eduard (Bellingham, Wash. : SPIE, 2016)

Common 2D laser line triangulation sensors allow a 2D profile measurement in a single line. To scan samples with great curved surfaces like edges, a single laser line triangulation sensor is insufficient. To measure the ...
Evaluating commercial moisture probes in reference solutions covering mineral to peat soil conditions

Dettmann, Ullrich; Bechtold, Michel (Washington, DC : Soil Science Society of America, 2018)

Capacitance and time domain reflectometry (TDR) probes are frequently used for measurements of the volumetric soil water content. The measurement concept is based on the correlation between volumetric water content and ...
A framework based on reference data with superordinate accuracy for the quality analysis of terrestrial laser scanning-based multi-sensor-systems

Stenz, Ulrich; Hartmann, Jens; Paffenholz, Jens-André; Neumann, Ingo (Basel : MDPI AG, 2017)

Terrestrial laser scanning (TLS) is an efficient solution to collect large-scale data. The efficiency can be increased by combining TLS with additional sensors in a TLS-based multi-sensorsystem (MSS). The uncertainty of ...
High-precision 3D object capturing with static and kinematic terrestrial laser scanning in industrial applications-approaches of quality assessment

Stenz, Ulrich; Hartmann, Jens; Paffenholz, Jens-André; Neumann, Ingo (Basel : MDPI AG, 2020)

Abstract Terrestrial laser scanning is used in many disciplines of engineering. Examples include mobile mapping, architecture surveying, archaeology, as well as monitoring and surveillance measurements. For most of the ...
Hydrological model calibration for derived flood frequency analysis using stochastic rainfall and probability distributions of peak flows

Haberlandt, Uwe; Radtke, I. (Göttingen : Copernicus GmbH, 2014)

Derived flood frequency analysis allows the estimation of design floods with hydrological modeling for poorly observed basins considering change and taking into account flood protection measures. There are several possible ...
Intelligent calibration of static FEA computations based on terrestrial laser scanning reference

Xu, Wu; Bao, Xiangyu; Chen, Genglin; Neumann, Ingo (Basel : MDPI AG, 2020)

The demand for efficient and accurate finite element analysis (FEA) is becoming more prevalent with the increase in advanced calibration technologies and sensor-based monitoring methods. The current research explores a ...

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