Mr. Erik Sucher Profile

Erik Sucher

at Fraunhofer IOSB

SPIE Involvement:

Author

Publications (39)

Proceedings Article | 19 October 2023 Presentation + Paper

An electrooptical propagation and signature experiment in a humid environment

Christian Eisele, Dirk Seiffer, Erik Sucher, Carmen Ullwer, Peter Großmann, Berndt Bartos

Proceedings Volume 12731, 1273104 (2023) https://doi.org/10.1117/12.2675880

KEYWORDS: Simulations, Sensors, Turbulence, Electro optics, Electro optical modeling, Atmospheric propagation, Thermal modeling

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Proceedings Article | 19 October 2023 Presentation + Paper

Laser beam propagation over the sea surface: experimental data and verification of simulations

L. C. Scheers, G. J. M. Vissers, S. van Binsbergen, A. Huerta Viso, R. Overzier, A. P. Oosterwijk, A. M. van Eijk, E. Sucher, K. Stein

Proceedings Volume 12731, 127310E (2023) https://doi.org/10.1117/12.2683975

KEYWORDS: Atmospheric propagation, Laser beam propagation, Beam wander, Scintillation, Beam propagation method, Atmospheric modeling

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Proceedings Article | 15 March 2023 Presentation + Paper

Investigating the integrated optical turbulence over the sea by different measurement techniques and mesoscale model simulations

Erik Sucher, Sven van Binsbergen, Carmen Ullwer, Alexander M. van Eijk, Karin Stein, Detlev Sprung

Proceedings Volume 12266, 1226604 (2023) https://doi.org/10.1117/12.2638774

KEYWORDS: Simulations, Turbulence, Beam wander, Atmospheric propagation, Atmospheric modeling, Optical turbulence, Beam path, Equipment, Atmospheric optics, Transmitters

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Proceedings Article | 2 November 2022 Presentation + Paper

Determination of the cloud coverage using ground based camera images in the visible and infrared spectral range

Jeanette Mostafa, Thomas Kociok, Erik Sucher, Karin Stein

Proceedings Volume 12270, 122700A (2022) https://doi.org/10.1117/12.2636706

KEYWORDS: Clouds, Cameras, Infrared cameras, Visualization, Infrared imaging, Infrared radiation, Sun, Imaging systems, Visible radiation, Binary data

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Proceedings Article | 26 October 2022 Presentation + Paper

Laser propagation measurements over a multi-km path in a maritime environment

S. van Binsbergen, P. van den Berg, L. C. Scheers, J. Blom, E. Sucher, A. M. van Eijk, K. Stein

Proceedings Volume 12266, 1226603 (2022) https://doi.org/10.1117/12.2638663

KEYWORDS: Atmospheric propagation, Laser beam propagation, Cameras, Visibility, Environmental sensing, Short wave infrared radiation, Laser sources, Turbulence, Modulation, Laser safety

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Proceedings Article | 26 October 2022 Presentation

Characteristics of optical turbulence over the sea

Erik Sucher, Sven Binsbergen, Carmen Ullwer, Detlev Sprung, Alexander van Eijk, Karin Stein

Proceedings Volume 12266, 1226605 (2022) https://doi.org/10.1117/12.2636241

KEYWORDS: Turbulence, Optical turbulence, Wave propagation, Ultrasonics, Refraction, Data acquisition

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Proceedings Article | 30 September 2022 Presentation + Paper

Low-altitude laser propagation link over a marine surface

S. A. van Binsbergen, P. J. van den Berg, L. C. W. Scheers, J. Blom, E. Sucher, A. M. van Eijk

Proceedings Volume 12237, 122370C (2022) https://doi.org/10.1117/12.2632361

KEYWORDS: Visibility, Atmospheric propagation, Signal attenuation, Laser beam propagation, Cameras, Short wave infrared radiation, Turbulence, Atmospheric particles

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Proceedings Article | 12 September 2021 Presentation + Paper

Investigation of the atmosphere above the sea regarding laser performance

Detlev Sprung, Carmen Ullwer, Erik Sucher, Peter Grossmann, Thomas Kociok, Alexander M. van Eijk, Karin Stein

Proceedings Volume 11860, 1186007 (2021) https://doi.org/10.1117/12.2600229

KEYWORDS: Turbulence, Visibility, Meteorology, Laser beam propagation, Atmospheric propagation, Signal attenuation, Optical turbulence, Ocean optics, Refractive index

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Proceedings Article | 20 September 2020 Presentation + Paper

Investigation of optical turbulence over an urban area: comparison between experimental results and simulation

Detlev Sprung, Carmen Ullwer, Erik Sucher, Thomas Kociok, Alexander M. van Eijk, Karin Stein

Proceedings Volume 11532, 1153205 (2020) https://doi.org/10.1117/12.2572997

KEYWORDS: Optical turbulence, Atmospheric optics, Refractive index, Thermal effects, Wireless communications, Optical testing, Turbulence

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Proceedings Article | 18 October 2019 Paper

Turbulent kinetic energy estimates from profiling wind lidar and provisional derivation to calculate C2n

Thomas Kociok, Detlev Sprung, Erik Sucher, Alexander M. J. van Eijk, Karin Stein

Proceedings Volume 11153, 1115309 (2019) https://doi.org/10.1117/12.2533069

KEYWORDS: LIDAR, Turbulence, Wind energy, Optical turbulence, Atmospheric modeling, Refractive index, Clouds, Data modeling, Profiling, Atmospheric optics

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Proceedings Article | 11 October 2019 Paper

Using ultrasonic anemometers for temperature measurements and implications on Cn2

Detlev Sprung, Erik Sucher, Peter Grossmann, Thomas Kociok, Alexander M. J. van Eijk, Karin Stein

Proceedings Volume 11153, 111530B (2019) https://doi.org/10.1117/12.2534023

KEYWORDS: Ultrasonics, Humidity, Turbulence, Optical turbulence, Refractive index, Temperature metrology, Atmospheric propagation, Wave propagation, Sensors, Atmospheric laser remote sensing

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Proceedings Article | 11 October 2019 Presentation + Paper

Development of a low cost fast response sensor for wind and temperature measurements

Rimante Jarockyte, Thomas Kociok, Erik Sucher, Detlev Sprung, Karin Stein

Proceedings Volume 11153, 111530C (2019) https://doi.org/10.1117/12.2536325

KEYWORDS: Sensors, Wind measurement, Ultrasonics, Transducers, Temperature metrology, Atmospheric propagation, Time metrology, Turbulence, Optical turbulence, Atmospheric monitoring

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Proceedings Article | 9 October 2019 Paper

Near-surface turbulence effects on electro-optical propagation in an arid environment

Christian Eisele, Dirk Seiffer, Erik Sucher, Carmen Ullwer, Thomas Kociok, Detlev Sprung, Sven van Binsbergen, Piet Bijl

Proceedings Volume 11153, 1115302 (2019) https://doi.org/10.1117/12.2531009

KEYWORDS: Turbulence, Electro optics, Atmospheric propagation, Algorithm development, Modulation transfer functions, Atmospheric sensing, Optical sensors, Detector development, Detection and tracking algorithms, Electro optical systems

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Proceedings Article | 6 September 2019 Paper

Global simulations of Cn2 using the Weather Research and Forecast Model WRF and comparison to experimental results

Carmen Ullwer, Detlev Sprung, Erik Sucher, Thomas Kociok, Peter Grossmann, Alexander M. van Eijk, Karin Stein

Proceedings Volume 11133, 111330I (2019) https://doi.org/10.1117/12.2530280

KEYWORDS: Electro optical modeling, Systems modeling, Databases, Data modeling, Electro optical sensors, Electro optical systems, Laser systems engineering, Atmospheric optics, Atmospheric sensing, Optical turbulence

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Proceedings Article | 10 October 2018 Paper

Investigation of optical turbulence from an unmanned aerial system

Erik Sucher, Detlev Sprung, Michael Kremer, Thomas Kociok, Alexander M. van Eijk, Karin Stein

Proceedings Volume 10787, 1078706 (2018) https://doi.org/10.1117/12.2325626

KEYWORDS: Ultrasonics, Optical turbulence, Turbulence, Sensors, Atmospheric propagation, Refractive index, Electro optical systems, Wave propagation, Atmospheric optics, Temporal resolution

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Proceedings Article | 10 October 2018 Paper

Height dependence of characteristics of power spectra of temperature investigated in the surface layer of White Sands, US

Detlev Sprung, Erik Sucher, Alexander M. van Eijk, Christian Eisele, Dirk Seiffer, Karin Stein

Proceedings Volume 10787, 1078705 (2018) https://doi.org/10.1117/12.2325617

KEYWORDS: Turbulence, Ultrasonics, Optical turbulence, Temperature metrology, Wave propagation, Vegetation, Atmospheric propagation, Refractive index, Cameras, Data modeling

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Proceedings Article | 10 October 2018 Paper

Optical turbulence in the coastal area over False Bay, South Africa: comparison of measurements and modeling results

Detlev Sprung, Alexander M. van Eijk, Carmen Ullwer, Willi Gunter, Christian Eisele, Dirk Seiffer, Erik Sucher, Karin Stein

Proceedings Volume 10787, 1078703 (2018) https://doi.org/10.1117/12.2325609

KEYWORDS: Optical turbulence, Turbulence, Heat flux, Meteorology, Atmospheric propagation, Ultrasonics, Atmospheric modeling, Wave propagation, Atmospheric optics, Humidity

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Proceedings Article | 18 October 2017 Presentation

Local optical turbulence at and in the vicinity of the GREGOR solar telescope (Conference Presentation)

Oskar von der Lühe, Thomas Berkefeld, Detlev Sprung, Erik Sucher, Karin Stein

Proceedings Volume 10425, 104250C (2017) https://doi.org/10.1117/12.2279432

KEYWORDS: Optical turbulence, Telescopes, Image quality, Turbulence, Solar telescopes, Observatories, Adaptive optics, Refractive index, Earth's atmosphere, Atmospheric optics

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The image quality of ground-based solar telescopes depends on the amount of turbulence in the Earth’s atmosphere, which is strongest in layers close to the ground during daytime. Local optical turbulence affects the performance of adaptive optical systems and reduces the spatial resolution of solar observations. Increased turbulence which is caused by solar irradiation of the infrastructure close to the telescope and obstructions to a free airflow are major concerns, but difficult to detect and to monitor. We have conducted measurements of optical turbulence at the GREGOR solar telescope (Teide Observatory, Tenerife, Canary Islands) to assess quantitatively the influence of the infrastructure on the image quality. The strength of optical turbulence is determined by the structure function parameter of the refractive index Cn2. We have measured the temporal behavior of the free flow optical turbulence about 30m above ground using a laser scintillometer between the towers of the Vacuum Tower Telescope and of GREOR. Local measurements of Cn2 were taken on the observing platform of GREGOR using three ultrasonic anemometers. Two anemometers are located at the north and south ends of the telescope building, a third one was be placed close to the telescope main mirror cell. Air temperature, pressure, humidity as well as wind speed and direction were measured along with refractive index measurements. An image quality indicator based on an estimate of the Fried parameter r0 was recorded whenever the adaptive optics system GAOS at the GREGOR telescope was operating. Recordings of the net solar radiation were obtained from the GONG experiment which is located a few 100 m from GREGOR. All data were taken between May 2015 and March 2016. We investigate the relation between optical turbulence, solar irradiance and meteorological parameters. Under almost all conditions, optical turbulence nearby the telescope is stronger than free flow turbulence. We note significant dependencies of the strength and the horizontal gradient of Cn2 on wind direction. The moderate influence on image quality indicates that there is only a thin layer with strong turbulence just above the telescope.

Proceedings Article | 18 October 2017 Paper

Long-term experiment VERTURM (vertical turbulence measurements): comparison of measurements and modeling of the vertical distribution of optical turbulence Cn2 in the surface layer

Detlev Sprung, Peter Grossmann, Erik Sucher, Alexander M. van Eijk, Karin Stein

Proceedings Volume 10425, 1042508 (2017) https://doi.org/10.1117/12.2279427

KEYWORDS: Turbulence, Optical turbulence, Electro optical modeling, Atmospheric optics, Systems modeling, Atmospheric turbulence, Electro optical systems, Atmospheric modeling, Standards development, Meteorology

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Proceedings Article | 10 October 2017 Paper

Comparison of integrated optical turbulence over the sea in different coastal regions in the world

Detlev Sprung, Erik Sucher, Christian Eisele, Dirk Seiffer, Alexander M. van Eijk, Karin Stein

Proceedings Volume 10425, 1042502 (2017) https://doi.org/10.1117/12.2279425

KEYWORDS: Optical turbulence, Climatology, Integrated optics, Electro optics, Electro optical systems, Laser systems engineering, Atmospheric optics, Turbulence, High speed cameras, Halogens

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Proceedings Article | 29 September 2017 Presentation + Paper

Electro-optical propagation measurements during the MINOTAUROS experiment in the Cretan Sea

Christian Eisele, Erik Sucher, Norbert Wendelstein, Karin Stein

Proceedings Volume 10425, 1042506 (2017) https://doi.org/10.1117/12.2278595

KEYWORDS: Atmospheric propagation, Turbulence, Refraction, Atmospheric optics, Electro optics, Ocean optics, Knowledge management, Meteorology

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Proceedings Article | 7 September 2017 Paper

Investigation of the height dependency of optical turbulence in the surface layer over False Bay (South Africa)

Detlev Sprung, Alexander M. van Eijk, Willie Günter, Derek Griffith, Christian Eisele, Erik Sucher, Dirk Seiffer, Karin Stein

Proceedings Volume 10408, 104080U (2017) https://doi.org/10.1117/12.2275859

KEYWORDS: Optical turbulence, Atmospheric propagation, Atmospheric turbulence, Electro optics, Scintillation, Laser systems engineering, Optical testing, Meteorology, Turbulence

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Proceedings Article | 20 October 2016 Presentation + Paper

Comparison of MODTRAN simulations and transmission measurements by path-integrated and in-situ techniques over a rural site in northwestern Germany

Silke Vogelbacher, Alexander M. van Eijk, Detlev Sprung, Leo Cohen, Erik Sucher, Karin Stein

Proceedings Volume 10002, 1000203 (2016) https://doi.org/10.1117/12.2240644

KEYWORDS: Atmospheric particles, Atmospheric modeling, Visibility, Aerosols, Electro optical modeling, Meteorology, Data modeling, Refractive index, Phase modulation, Sensors

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Proceedings Article | 19 October 2016 Paper

Instrumental intercomparison investigating vertical profiles of optical turbulence and wind speed in the lower atmospheric boundary layer during frontal passages in northwestern Germany

Detlev Sprung, Karin Stein, Erik Sucher, Abraham Englander, Salomon Fastig, Omar Porat

Proceedings Volume 10002, 1000204 (2016) https://doi.org/10.1117/12.2245483

KEYWORDS: Optical turbulence, LIDAR, Wind measurement, Atmospheric optics, Turbulence, Ultrasonics, Temperature metrology, Aerosols, Earth's atmosphere, Receivers

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Proceedings Article | 19 October 2016 Paper

FESTER: a propagation experiment, overview and first results

Christian Eisele, Dirk Peter Seiffer, Karin Stein, Erik Sucher, Willem Gunter, Faith February, George Vrahimis, Carl Wainman, Benita Maritz, Mokete Koago, Alexander M. van Eijk, Miranda van Iersel, Leo Cohen, Sven van Binsbergen, H. J. M. (Eric) Heemskerk, Armin Sternberg, Helmut Schulte, Arthur van Rheenen, Erik Brenthagen, Jan Thomassen, Derek Griffith

Proceedings Volume 10002, 1000208 (2016) https://doi.org/10.1117/12.2240771

KEYWORDS: Atmospheric propagation, Aerosols, Atmospheric particles, Sensors, Mid-IR, Long wavelength infrared, Environmental sensing, Turbulence, Halogens, Temperature metrology

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Proceedings Article | 19 October 2016 Presentation + Paper

First results on the Experiment FESTER on optical turbulence over False Bay South Africa: dependencies and consequences

Detlev Sprung, Alexander M. van Eijk, Erik Sucher, Christian Eisele, Dirk Seiffer, Karin Stein

Proceedings Volume 10002, 1000209 (2016) https://doi.org/10.1117/12.2240651

KEYWORDS: Optical turbulence, Atmospheric propagation, Electro optical systems, Turbulence, Heat flux, Ultrasonics, Kinematics, Refractive index, Temperature metrology, Receivers

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Proceedings Article | 19 October 2016 Paper

Characterization of optical turbulence at the GREGOR solar telescope: temporal and local behavior and its influence on the solar observations

D. Sprung, E. Sucher, K. Stein, O. von der Lühe, Th. Berkefeld

Proceedings Volume 10002, 1000205 (2016) https://doi.org/10.1117/12.2245479

KEYWORDS: Telescopes, Optical turbulence, Turbulence, Solar telescopes, Adaptive optics, Refractive index, Observatories, Ultrasonics, Temperature metrology, Receivers

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Proceedings Article | 19 September 2016 Presentation + Paper

The dependence of optical turbulence on thermal and mechanical forces over the sea

Alexander M. J. van Eijk, Detlev Sprung, Erik Sucher, Christian Eisele, Dirk Seiffer, Karin Stein

Proceedings Volume 9979, 99790R (2016) https://doi.org/10.1117/12.2239324

KEYWORDS: Optical turbulence, Turbulence, Refractive index, Heat flux, Humidity, Statistical analysis, Kinematics, Receivers, Meteorology, Wind measurement

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Proceedings Article | 19 September 2016 Presentation + Paper

The FESTER field trial

Alexander M. van Eijk, Willie Gunter, Faith February, Benita Maritz, George Vrahimis, Mokete Koago, Carl Wainman, Christian Eisele, Dirk Seiffer, Erik Sucher, Karin Stein, Miranda van Iersel, Leo Cohen, Sven Van Binsbergen, H. J. M. (Eric) Heemskerk, A. Sternberg, H. Schulte, Arthur van Rheenen, Erik Brenthagen, Jan Thomassen, D. Griffith

Proceedings Volume 9979, 99790Q (2016) https://doi.org/10.1117/12.2240642

KEYWORDS: Electro optics, Environmental sensing, Long wavelength infrared, Turbulence, Sensors, Mid-IR, Atmospheric propagation, Aerosols, Temperature metrology, Metals

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Proceedings Article | 8 October 2015 Paper

Ultimate turbulence experiment: simultaneous measurements of Cn2 near the ground using six devices and eight methods

Lydia Yatcheva, Rui Barros, Max Segel, Detlev Sprung, Erik Sucher, Christian Eisele, Szymon Gladysz

Proceedings Volume 9641, 964105 (2015) https://doi.org/10.1117/12.2195029

KEYWORDS: Optical transfer functions, Turbulence, Modulation transfer functions, Light emitting diodes, Wavefront sensors, Point spread functions, Refractive index, Motion measurement, Sensors, Atmospheric propagation

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Proceedings Article | 4 September 2015 Paper

Estimation of turbulence strength, anisotropy, outer scale and spectral slope from an LED array

Szymon Gladysz, Max Segel, Christian Eisele, Rui Barros, Erik Sucher

Proceedings Volume 9614, 961402 (2015) https://doi.org/10.1117/12.2191287

KEYWORDS: Turbulence, Light emitting diodes, Anisotropy, Wavefront sensors, Sensors, Optical turbulence, Motion measurement, Refractive index, Telescopes, Optical sensors

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Proceedings Article | 21 October 2014 Paper

Investigation of optical turbulence in the atmospheric surface layer using scintillometer measurements along a slant path and comparison to ultrasonic anemometer measurements

D. Sprung, E. Sucher, A. Ramkilowan, D. Griffith

Proceedings Volume 9242, 92421I (2014) https://doi.org/10.1117/12.2070257

KEYWORDS: Optical turbulence, Atmospheric optics, Turbulence, Laser sintering, Meteorology, Light emitting diodes, Temperature metrology, Cameras, Electro optical systems, Imaging systems

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Optical turbulence represented by the structure function parameter of the refractive index C_n ² is a relevant parameter for the performance of electro-optical systems and characterization of the atmospheric influence on imaging. It was investigated during a field trial above an Highveld grassland in the atmospheric surface layer at the Rietvlei Nature Reserve close to Pretoria in South Africa from 18th June to 30th June 2013. This campaign was performed to compare different measurement techniques analyzing the diurnal formation of the vertical distribution of optical turbulence up to a height of 16 m above ground. The chosen time period was characterized by a pronounced diurnal cycle of the meteorological conditions, i.e. low variations from day to day. Ultra sonic anemometers were used to measure high frequency time series (50 Hz) of temperature at single points. From the statistical analysis of these time series C_n ² was derived. Three instruments were mounted at a portable mast in the center of slant path measurements over a horizontal distance of 1000 m using large aperture scintillometers (Boundary layer scintillometer BLS 900). Averaging over a time period of 5 minutes, the results of both methods are compared. The agreement in the results of optical turbulence is quite good. Discrepancies and agreement are analyzed with respect to the atmospheric stability and other meteorological parameters. Lowest values of C_n ² at 4.6 m above ground amount to about 8*10^-17 m^-2/3, daily maxima to 6*10^-13 m^-2/3. Additional to the nearly constant meteorological conditions in the diurnal cycle, the uniformity of the terrain let the results of this measurement campaign an ideal data set for investigating methodological questions regarding a comparison of single point measurements with integrated measurements over a horizontal distance. Four stability regimes were identified in the diurnal cycle and investigated. These are convective conditions during the day, neutral conditions about sunrise and sunset, and two different stable regimes at night.

Proceedings Article | 21 October 2014 Paper

Exploration of satellite-derived data products for atmospheric turbulence studies

Derek Griffith, Arshath Ramkilowan, Detlev Sprung, Erik Sucher, Cornelius Willers, Gert J. Coetzee, Ryno van Staden

Proceedings Volume 9242, 92421J (2014) https://doi.org/10.1117/12.2071893

KEYWORDS: Satellites, Heat flux, MODIS, Shortwaves, Reflectivity, Soil science, Humidity, Data modeling, Turbulence, Aerosols

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Proceedings Article | 17 October 2013 Paper

Measuring non-Kolmogorov turbulence

Szymon Gladysz, Karin Stein, Erik Sucher, Detlev Sprung

Proceedings Volume 8890, 889013 (2013) https://doi.org/10.1117/12.2031052

KEYWORDS: Turbulence, Adaptive optics, Cameras, Wavefront sensors, Receivers, Transmitters, Scintillation, Time metrology, Optical turbulence, Free space optical communications

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Proceedings Article | 17 October 2013 Paper

Comparison of slant-path scintillometry, sonic anemometry and high-speed videography for vertical profiling of turbulence in the atmospheric surface layer

Derek Griffith, Detlev Sprung, Erik Sucher, Arshath Ramkilowan, Lufuno Vhengani

Proceedings Volume 8890, 889014 (2013) https://doi.org/10.1117/12.2032674

KEYWORDS: Turbulence, Video, Laser sintering, Cameras, Receivers, Light sources, Atmospheric turbulence, Environmental sensing, Atmospheric modeling, Light emitting diodes

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Proceedings Article | 17 October 2013 Paper

Characterization of optical turbulence at the solar observatory at the Mount Teide, Tenerife

Detlev Sprung, Erik Sucher

Proceedings Volume 8890, 889015 (2013) https://doi.org/10.1117/12.2032744

KEYWORDS: Optical turbulence, Telescopes, Observatories, Humidity, Turbulence, Atmospheric optics, Infrared telescopes, Meteorology, Scintillation, Astronomical telescopes

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Proceedings Article | 24 October 2012 Paper

Investigation of seasonal and diurnal cycles on the height dependence of optical turbulence in the lower atmospheric boundary layer

Detlev Sprung, Peter Grossmann, Erik Sucher

Proceedings Volume 8517, 85170K (2012) https://doi.org/10.1117/12.929806

KEYWORDS: Turbulence, Optical turbulence, Heat flux, Convection, Atmospheric optics, Refractive index, Kinematics, Meteorology, Atmospheric propagation, Atmospheric turbulence

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Proceedings Article | 11 October 2011 Paper

Stability and height dependant variations of the structure function parameters in the lower atmospheric boundary layer investigated from measurements of the long-term experiment VERTURM (vertical turbulence measurements)

Detlev Sprung, Peter Grossmann, Erik Sucher, Karin Weiss-Wrana, Karin Stein

Proceedings Volume 8178, 817809 (2011) https://doi.org/10.1117/12.897720

KEYWORDS: Turbulence, Electro optical modeling, Optical turbulence, Temperature metrology, Atmospheric optics, Refractive index, Heat flux, Acoustics, Humidity, Wind energy

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Proceedings Article | 2 October 2008 Paper

Laser beam propagation experiments along and across a jet engine plume

Markus Henriksson, Lars Sjöqvist, Dirk Seiffer, Norbert Wendelstein, Erik Sucher

Proceedings Volume 7115, 71150E (2008) https://doi.org/10.1117/12.799202

KEYWORDS: Laser beam propagation, Atmospheric propagation, Turbulence, Cameras, Scintillation, Imaging systems, Directed infrared countermeasures, Optical testing, Refraction, Telecommunications

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Showing 5 of 39 publications

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