Dr. Viktor I. Feygels Profile

Dr. Viktor I. Feygels

Chief Scientist at Teledyne Optech

SPIE Involvement:

Author

Publications (32)

Proceedings Article | 24 October 2018 Paper

Paper

Features of airborne lidar surveys in clear ocean waters using Coastal Zone Mapping and Imaging Lidar (CZMIL)

Viktor Feygels, Nicholas Johnson, Yurij Kopilevich, Vinod Ramnath, Robert Marthouse, Jennifer Wozencraft , Hieu Duong, Christopher Macon

Proceedings Volume 10778, 107780I (2018) https://doi.org/10.1117/12.2324749

KEYWORDS: LIDAR, CZMIL, Signal attenuation, Absorption, Water, Optical properties, Satellites, Receivers, Backscatter, Scattering

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Proceedings Article | 10 May 2018 Paper

Paper

Total propagated uncertainty for coastal zone mapping and imaging lidar (CZMIL)

Vinod Ramnath, Peter Friess, Hieu Duong, Viktor Feygels, Yuri Kopilevich

Proceedings Volume 10636, 106360N (2018) https://doi.org/10.1117/12.2303893

KEYWORDS: CZMIL, Error analysis, LIDAR, Sensors, Ranging, Statistical analysis, Estimation theory, Light scattering

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Proceedings Article | 26 November 2014 Paper

Paper

Particularities of hydro lidar missions in the Asia-Pacific region

Viktor Feygels, Yuri Kopilevich, Joong Yong Park, Minsu Kim, Jennifer Aitken

Proceedings Volume 9262, 92620X (2014) https://doi.org/10.1117/12.2069871

KEYWORDS: CZMIL, LIDAR, Water, Signal attenuation, Ocean optics, Reflectivity, Imaging systems, Optical properties, Receivers, Scattering

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Proceedings Article | 26 November 2014 Paper

Paper

Estimation of inherent optical properties from CZMIL lidar

Minsu Kim, Viktor Feygels, Yuri Kopilevich, Joong Yong Park

Proceedings Volume 9262, 92620W (2014) https://doi.org/10.1117/12.2069301

KEYWORDS: LIDAR, Signal attenuation, Scattering, Optical properties, Laser scattering, CZMIL, Water, Backscatter, Pulsed laser operation, Absorption

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Proceedings Article | 17 November 2014 Paper

Paper

Visualization using 3D voxelization of full lidar waveforms

Joong Yong Park, Vinod Ramnath, Victor Feygels

Proceedings Volume 9262, 92620N (2014) https://doi.org/10.1117/12.2069284

KEYWORDS: LIDAR, Visualization, CZMIL, Volume visualization, Backscatter, Pulsed laser operation, Reflectivity, Sun, Water, Detection and tracking algorithms

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Proceedings Article | 3 June 2013 Paper

Paper

CZMIL (coastal zone mapping and imaging lidar): from first flights to first mission through system validation

Viktor Feygels, Joong Yong Park, Jennifer Wozencraft, Jennifer Aitken, Christopher Macon, Abhinav Mathur, Andy Payment, Vinod Ramnath

Proceedings Volume 8724, 87240A (2013) https://doi.org/10.1117/12.2017935

KEYWORDS: CZMIL, LIDAR, Reflectivity, Sensors, Global Positioning System, Water, Signal attenuation, Acoustics, Clouds, Cameras

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Proceedings Article | 19 October 2012 Paper

Paper

Coastal Zone Mapping and Imaging Lidar (CZMIL): first flights and system validation

Viktor Feygels, Joong Yong Park, Jennifer Aitken, Minsu Kim, Andy Payment, Vinod Ramnath

Proceedings Volume 8532, 85321C (2012) https://doi.org/10.1117/12.2007325

KEYWORDS: CZMIL, Reflectivity, LIDAR, Signal attenuation, Imaging systems, Water, Cameras, Global Positioning System, Spectroscopy, Sensors

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Proceedings Article | 13 May 2010 Paper

Paper

Predicted bathymetric lidar performance of Coastal Zone Mapping and Imaging Lidar (CZMIL)

Vinod Ramnath, Viktor Feygels, Yuri Kopilevich, Joong Yong Park, Grady Tuell

Proceedings Volume 7695, 769511 (2010) https://doi.org/10.1117/12.851978

KEYWORDS: CZMIL, LIDAR, Receivers, Clouds, Pulsed laser operation, Sun, Reflectivity, Signal to noise ratio, Double positive medium, Calibration

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Proceedings Article | 13 May 2010 Paper

Paper

Prelude to CZMIL: seafloor imaging and classification results achieved with CHARTS and the rapid environmental assessment (REA) processor

Jennifer Aitken, Vinod Ramnath, Viktor Feygels, Abhinav Mathur, Minsu Kim, Joong Yong Park, Grady Tuell

Proceedings Volume 7695, 76950S (2010) https://doi.org/10.1117/12.851915

KEYWORDS: Reflectivity, LIDAR, CZMIL, Algorithm development, Data acquisition, Absorption, Signal attenuation, Water, Data fusion, Image processing

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Proceedings Article | 13 May 2010 Paper

Paper

Development of a novel laser system for the CZMIL lidar

Jeffrey Pierce, Eran Fuchs, Spencer Nelson, Viktor Feygels, Grady Tuell

Proceedings Volume 7695, 76950V (2010) https://doi.org/10.1117/12.851933

KEYWORDS: CZMIL, Optical amplifiers, Fiber amplifiers, LIDAR, Oscillators, Pulsed laser operation, Amplifiers, Laser systems engineering, Q switching, Laser development

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Proceedings Article | 13 May 2010 Paper

Paper

Predicted lidar ranging accuracy for CZMIL

Abhinav Mathur, Vinod Ramnath, Viktor Feygels, Eran Fuchs, Joong Yong Park, Grady Tuell

Proceedings Volume 7695, 76950Z (2010) https://doi.org/10.1117/12.851974

KEYWORDS: CZMIL, Ranging, LIDAR, Detection and tracking algorithms, Error analysis, Computer simulations, Gemini Observatory, Algorithm development, Raster graphics, Software development

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Proceedings Article | 13 May 2010 Paper

Paper

Active-passive data fusion algorithms for seafloor imaging and classification from CZMIL data

Joong Yong Park, Vinod Ramnath, Viktor Feygels, Minsu Kim, Abhinav Mathur, Jennifer Aitken, Grady Tuell

Proceedings Volume 7695, 769515 (2010) https://doi.org/10.1117/12.851991

KEYWORDS: Data fusion, Data modeling, Reflectivity, LIDAR, Signal attenuation, Image fusion, CZMIL, Image classification, Double positive medium, 3D modeling

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Proceedings Article | 13 May 2010 Paper

Paper

Proposed lidar receiver architecture for the CZMIL system

Andy Payment, Viktor Feygels, Eran Fuchs

Proceedings Volume 7695, 76950Y (2010) https://doi.org/10.1117/12.851971

KEYWORDS: Signal detection, LIDAR, CZMIL, Receivers, Field programmable gate arrays, Imaging systems, Photomultipliers, Data storage, Pulsed laser operation, Algorithm development

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Proceedings Article | 13 April 2007 Paper

Paper

Estimation of the water optical properties and bottom reflectance from SHOALS data

V. Feygels, Y. Kopilevich, G. Tuell, A. Surkov, P. LaRocque, A. Cunningham

Proceedings Volume 6615, 66150F (2007) https://doi.org/10.1117/12.740462

KEYWORDS: Avalanche photodetectors, Receivers, Reflectivity, Optical properties, LIDAR, Pulsed laser operation, Water, Calibration, Scattering, Signal attenuation

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Proceedings Article | 23 August 2005 Paper

Paper

Measurement of ocean water optical properties and seafloor reflectance with scanning hydrographic operational airborne lidar survey (SHOALS): I. Theoretical background

Yuri Kopilevich, Viktor Feygels, Grady Tuell, Alexey Surkov

Proceedings Volume 5885, 58850D (2005) https://doi.org/10.1117/12.618923

KEYWORDS: LIDAR, Avalanche photodetectors, Receivers, Scattering, Optical properties, Reflectivity, Water, Signal attenuation, Ocean optics, Backscatter

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Proceedings Article | 23 August 2005 Paper

Paper

Measurement of ocean water optical properties and seafloor reflectance with scanning hydrographic operational airborne lidar survey (SHOALS): II. Practical results and comparison with independent data

Grady Tuell, Viktor Feygels, Yuri Kopilevich, Alan Weidemann, A. Grant Cunningham, Reza Mani, Vladimir Podoba, Vinod Ramnath, J. Y. Park, Jen Aitken

Proceedings Volume 5885, 58850E (2005) https://doi.org/10.1117/12.619215

KEYWORDS: Reflectivity, Avalanche photodetectors, LIDAR, Calibration, Water, Receivers, Pulsed laser operation, Optical properties, Scattering, Signal attenuation

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Proceedings Article | 1 June 2005 Paper

Paper

SHOALS-enabled 3D benthic mapping

Grady Tuell, Joong Park, Jennifer Aitken, Vinod Ramnath, Viktor Feygels, Gary Guenther, Yuri Kopilevich

Proceedings Volume 5806, (2005) https://doi.org/10.1117/12.607010

KEYWORDS: Reflectivity, Signal attenuation, Data fusion, Sensors, Image processing, Water, LIDAR, Image resolution, Spectroscopy, Associative arrays

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Proceedings Article | 5 November 2003 Paper

Paper

Airborne lidar system with variable-field-of-view receiver for water optical properties measurement

Viktor Feygels, Yuri Kopilevich, Alexey Surkov, James Yungel, Michael Behrenfeld

Proceedings Volume 5155, (2003) https://doi.org/10.1117/12.506976

KEYWORDS: LIDAR, Scattering, Receivers, Water, Laser scattering, Ocean optics, Optical properties, Particles, Signal attenuation, Optical testing

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Proceedings Article | 5 November 2003 Paper

Paper

Narrow-field-of-view bathymetrical lidar: theory and field test

Viktor Feygels, C. Wayne Wright, Yuri Kopilevich, Alexey Surkov

Proceedings Volume 5155, (2003) https://doi.org/10.1117/12.506951

KEYWORDS: LIDAR, Receivers, Scattering, Backscatter, Signal detection, Laser scattering, Signal attenuation, Interference (communication), Water, Ocean optics

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The purpose of this paper is to derive a reliable theory to predict the performance of a narrow-FOV bathymetric lidar. A fundamental discrepancy between the theoretical estimate and experimental results was the inspiration for the work presented here Meeting oceanographic mapping requirements is a critically important goal for littoral laser bathymetry. In contrast to traditional airborne lidar system which are optimized for recovering signals from the deepest possible waters , the above challenge may be met with a radical narrowing to the lidar transmit beam and receiver field of view (FOV) employed in EAARL (Experimental Advanced Airborne Research Lidar, NASA). In this paper we discuss theoretical analysis carried out on the basis of a sophisticated “multiple-forward scattering and single-backscattering model” for lidar return signals allows a quantitative estimation of the advantages of a narrow-FOV system over traditional bathymetric lidars (SHOALS-400, SHOALS-100, LADS Mk II) when used in clear shallow-water cases. Some of those advantages are: · Increase in bottom definition (or reduced false-alarm probability) due to the enhanced contrast of the bottom return over the background backscatter from the water column, · Enhancement in depth measurement accuracy resulting from narrower bottom return pulse width, · Reduction of post-surface return effects in the lidar photo-multiplier detector due to a more rapid decay of water column backscatter, · Greatly improved rejection of ambient light permitting lidar operations in all zenith sun angles and flight directions. The model computations make it possible to estimate the maximal operational depth for the system under consideration by the implementation of statistical theory of detectability. These computations depend on the prevailing seawater optical properties and lidar parameters. The theoretical predictions are compared with results obtained in the field test of the EAARL system carried out in Florida Keys in 2001.

Proceedings Article | 5 November 2003 Paper

Paper

Mathematical modeling of input signals for oceanographic lidar systems

Yuri Kopilevich, Viktor Feygels, Alexey Surkov

Proceedings Volume 5155, (2003) https://doi.org/10.1117/12.506980

KEYWORDS: LIDAR, Receivers, Mathematical modeling, Scattering, Laser scattering, Systems modeling, Optical properties, Signal attenuation, Water, Light scattering

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Proceedings Article | 14 January 2002 Paper

Paper

Prediction of bathymetric lidar performance with Ocean Scientific 2001 simulation code

Victor Feigels, Blair Evans, Lev Feygels, Gary Guenther, Yurij Kopilevich

Proceedings Volume 4488, (2002) https://doi.org/10.1117/12.452826

KEYWORDS: LIDAR, Sun, Sensors, Signal to noise ratio, Signal detection, Receivers, Backscatter, Ocean optics, Interference (communication), Reflection

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Proceedings Article | 14 January 2002 Paper

Paper

Multispectral lidar sounding of ocean waters

Yurij Kopilevich, Victor Feigels

Proceedings Volume 4488, (2002) https://doi.org/10.1117/12.452804

KEYWORDS: Absorption, Scattering, LIDAR, Particles, Water, Ocean optics, Signal attenuation, Light scattering, Optical properties, Copper vapor lasers

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Proceedings Article | 28 October 1999 Paper

Paper

Russian airborne lidar systems: comparative analysis and new ideas

Victor Feigels, Yurij Kopilevich

Proceedings Volume 3761, (1999) https://doi.org/10.1117/12.366475

KEYWORDS: LIDAR, Sensors, Signal detection, Signal to noise ratio, Receivers, Interference (communication), Scattering, Ocean optics, Imaging systems, Signal attenuation

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Proceedings Article | 13 November 1996 Paper

Paper

Optimization of laser wavelength in oceanographic lidars

Victor Feigels, Yurij Kopilevich

Proceedings Volume 2964, (1996) https://doi.org/10.1117/12.258343

KEYWORDS: LIDAR, Scattering, Dye lasers, Receivers, Signal attenuation, Laser sources, Laser scattering, Pulsed laser operation, Ocean optics, Absorption

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Proceedings Article | 26 October 1994 Paper

Paper

Applicability of lidar remote sensing methods for vertical structure investigation of ocean optical properties distribution

Victor Feigels, Yurij Kopilevich

Proceedings Volume 2258, (1994) https://doi.org/10.1117/12.190087

KEYWORDS: LIDAR, Ocean optics, Receivers, Scattering, Light scattering, Backscatter, Water, Optical properties, Pulsed laser operation, Remote sensing

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Proceedings Article | 26 October 1994 Paper

Paper

Theoretical model for backscattered pulse kinetics and interpretation of some anomalies in lidar remote sensing data

Yurij Kopilevich, Victor Feigels

Proceedings Volume 2258, (1994) https://doi.org/10.1117/12.190089

KEYWORDS: Backscatter, LIDAR, Water, Scattering, Ocean optics, Light scattering, Particles, Turbulence, Receivers, Data modeling

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Proceedings Article | 3 June 1994 Paper

Paper

Some anomalies in the shape of Lidar signal from upper sea-water layers

Yurij Kopilevich, Alexander Svetlykh, Victor Feigels

Proceedings Volume 2112, (1994) https://doi.org/10.1117/12.177315

KEYWORDS: LIDAR, Backscatter, Scattering, Particles, Light scattering, Signal attenuation, Receivers, Anisotropy, Water, Laser scattering

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Proceedings Article | 10 December 1993 Paper

Paper

Characteristics of light backscattering by seawater and lidar sounding of water column

Yurij Kopilevich, Victor Feigels

Proceedings Volume 2048, (1993) https://doi.org/10.1117/12.165494

KEYWORDS: LIDAR, Particles, Backscatter, Scattering, Light scattering, Anisotropy, Receivers, Optical testing, Ocean optics, Laser scattering

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Proceedings Article | 10 December 1993 Paper

Paper

Remote sensing of subsurface layers of turbid seawater with the help of an optical lidar system

Victor Feigels, Yurij Kopilevich

Proceedings Volume 2048, (1993) https://doi.org/10.1117/12.165508

KEYWORDS: LIDAR, Backscatter, Ocean optics, Scattering, Light scattering, Signal attenuation, Optical testing, Receivers, Water, Remote sensing

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Proceedings Article | 1 November 1993 Paper

Paper

Gain in lidar performance provided by increase of pulse-repetition rate and narrowing of optical-filter band

Alexander Svetlykh, Victor Feigels

Proceedings Volume 2111, (1993) https://doi.org/10.1117/12.162884

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Proceedings Article | 1 November 1993 Paper

Paper

Russian airborne lidar for oceanography

Victor Feigels, Yurij Kopilevich

Proceedings Volume 2111, (1993) https://doi.org/10.1117/12.162855

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Proceedings Article | 31 December 1992 Paper

Paper

Lidars for oceanological research: criteria for comparison, main limitations, perspectives

Victor Feigels

Proceedings Volume 1750, (1992) https://doi.org/10.1117/12.140676

KEYWORDS: LIDAR, Ocean optics, Receivers, Scattering, Atmospheric optics, Backscatter, Pulsed laser operation, Signal attenuation, Reflection, Sun

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Showing 5 of 32 publications

Proceedings Volume Editor (1)

SPIE Conference Volume | 13 November 1996

CIS Selected Papers: Laser Remote Sensing of Natural Waters: From Theory to Practice

Conference Committee Involvement (2)

CIS Selected Papers: Laser Remote Sensing of Natural Waters: From Theory to Practice

31 December 1996 | St.Petersburg, Russian Federation

Laser Remote Sensing of Natural Waters: From Theory to Practice

1 November 1996 | St.Petersburg, Russian Federation

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