Mr. Vincent Rye Profile

Vincent Rye

at Trex Enterprises Corp

SPIE Involvement:

Author

Publications (9)

Proceedings Article | 24 August 2010 Paper

Portable daytime differential image motion sensor for atmospheric turbulence characterization

M. Belen'kii, T. Brinkley, D. Bruns, L. DiRuscio, H. Runyeon, V. Rye, L. Angell, D. Haddock, S. Hammel, M. Lasher

Proceedings Volume 7814, 78140J (2010) https://doi.org/10.1117/12.860925

KEYWORDS: Telescopes, Stars, Signal to noise ratio, Cameras, Image sensors, Sensors, Short wave infrared radiation, Infrared telescopes, Software development, Error analysis

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Proceedings Article | 28 September 2007 Paper

Numerical analysis of hybrid adaptive optics system for correcting beacon anisoplanatism and thermal blooming

Mikhail Belen'kii, Vincent Rye, Hope Runyeon

Proceedings Volume 6711, 67110G (2007) https://doi.org/10.1117/12.735721

KEYWORDS: Adaptive optics, Thermal blooming, Wavefronts, Turbulence, Detection and tracking algorithms, Beam controllers, Numerical analysis, Linear filtering, Distortion, Wavefront sensors

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Proceedings Article | 27 September 2007 Paper

Wavefront-based stochastic parallel gradient descent beam control

Mikhail Belen'kii, Kevin Hughes, Hope Runyeon, Vincent Rye

Proceedings Volume 6711, 67110F (2007) https://doi.org/10.1117/12.732692

KEYWORDS: Adaptive optics, Turbulence, Detection and tracking algorithms, Wavefronts, Beam controllers, Wavefront sensors, Stochastic processes, Control systems, Diffraction, Algorithm development

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Proceedings Article | 25 September 2007 Paper

Laboratory demonstration of wavefront-based stochastic parallel gradient descent adaptive optics system

Mikhail Belen'kii, Jeff Barchers, Eric Berg, Don Bruns, Deborah Fung, Richard Gallant, Clay Kirk, Hope Runyeon, Vincent Rye, Josh Voass

Proceedings Volume 6708, 67080I (2007) https://doi.org/10.1117/12.734309

KEYWORDS: Adaptive optics, Turbulence, Thermal blooming, Beam controllers, Cameras, Control systems, Aluminum, Beam splitters, Wave propagation, Dynamical systems

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A laboratory demonstration of two novel tactical beam control methods for correcting the effects of strong turbulence including Beacon Anisoplanatism, and the combined effects of Beacon Anisoplanatism and Thermal Blooming, respectively, were performed in SAIC's Tactical Beam Control Test-Bed. Both systems were tested with ratio of aperture diameter to Fried parameter, D/r₀, of up to 7, and ratio of beam spot size at the target to isoplanatic angle, θ_B/θ_o, of up to 10. The first method was implemented in a Wavefront-based Stochastic Parallel Gradient Decent (WSPGD) adaptive optics (AO) system, which uses an off-axis wavefront sensor (WFS) to provide feedback for a multi-dithering beam control algorithm. The second method was implemented in a Hybrid WSPGD AO system, which incorporates the WSPGD AO system with a conventional Phase Conjugate (PC) AO system. The Hybrid system uses an on-axis WFS to generate initial deformable mirror commands and an off-axis WFS to generate additional commands that account for the high frequency phase components removed from the wavefront of a laser return by Beacon Anisoplanatism. We developed a low speed PC-based WSPGD controller, implemented designs of the WSPGD and Hybrid WSPGD AO systems in SAIC's Test-Bed, and tested both AO systems in static and dynamic turbulence over a wide range of turbulence conditions. A target-plane tracker was used to stabilize the line-of-sight in the AO corrected beam. Test results show that the WSPGD AO system efficiently compensates the effects of Beacon Anisoplanatism for both static and dynamic turbulence, providing a mean performance gain of 1.8 averaged over multiple turbulent realizations. We also found in testing that the Hybrid WSPGD system efficiently compensates for Beacon Anisoplanatism in the presence of Thermal Blooming - providing improved compensation for both Thermal Blooming and turbulence. In the presence of strong Beacon Anisoplanatism with θ_B/θ_o of up to 10, the maximum performance gain is 4.9 and the mean performance gain for multiple turbulence realizations is 2.1.

Proceedings Article | 25 September 2007 Paper

Turbulence inner scale sensor for arbitrary atmospheric paths

Mikhail Belen'kii, Don Bruns, Kevin Hughes, Laura Moyer, Vincent Rye, Larry Wright

Proceedings Volume 6709, 67090J (2007) https://doi.org/10.1117/12.732675

KEYWORDS: Point spread functions, Turbulence, Stars, Atmospheric propagation, Sensors, Telescopes, Atmospheric optics, Scintillation, Atmospheric sensing, Signal to noise ratio

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Proceedings Article | 1 September 2006 Paper

Experimental study of spatial structure of turbulence at Maui Space Surveillance Site (MSSS)

Mikhail Belen'kii, Edward Cuellar, Kevin Hughes, Vincent Rye

Proceedings Volume 6304, 63040U (2006) https://doi.org/10.1117/12.679093

KEYWORDS: Turbulence, Anisotropy, Cameras, Stars, Space telescopes, Telescopes, Wavefronts, Point spread functions, Surveillance, Data acquisition

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We investigated the spatial structure of atmospheric turbulence at Maui Space Surveillance Site (MSSS) using a 3.6 m telescope and a spatial filtering receiver. This receiver simultaneously records four star images on one camera frame. The star images are formed through pupil masks representing aperture diameters of 0.1 m, 0.5m, 1.5 m, and 3.6 m. We determined the camera orientation for each data set by moving the telescope at a given angle in azimuth and elevation. We calculated the horizontal and vertical components of the image centroid and evaluated the statistics of the horizontal and vertical wavefront tilt as a function of the aperture diameter and seeing conditions. We found several evidences of anisotropy of turbulence at MSSS. On four nights we observed that the variance of on-axis horizontal tilt exceeded the variance of the vertical tilt by a factor of 1.3-3.3. We believe that this is due to anisotropy of large-scale turbulence, where the horizontal scale of the turbulent inhomogeneities exceeds their vertical scale. The estimates of the horizontal and vertical turbulence outer scale confirmed this conclusion. In addition, in several data sets the horizontal image spot diameter of the long-exposure star image exceeded the vertical image spot diameter. We also found that large apertures are more likely to have higher anisotropy coefficient values than small apertures. This is because the contribution of small-scale isotropic turbulence to the image centroid reduces with increasing telescope diameter. In the case of isotropic turbulence, the power spectral densities (PSDs) of wavefront tilt are consistent with theoretical models. The telescope vibration modes were observed at 20 Hz. In the case of anisotropic turbulence, the PSDs of the horizontal tilt component have lower slope in the high frequency range, and difference between PSDs for large and small apertures is reduced. The anisotropy of turbulence and atmospheric tilt may affect the design and performance analysis of both active and passive optical systems.

Proceedings Article | 23 August 2005 Paper

Tracking in clutter and effects of thermal blooming on HEL beams

Mikhail Belen'kii, Kevin Hughes, Oleg Michailovich, Vincent Rye, Allen Tannenbaum, Don Washburn

Proceedings Volume 5895, 58950F (2005) https://doi.org/10.1117/12.613280

KEYWORDS: Thermal effects, Thermal blooming, Optical flow, Motion estimation, Cameras, Detection and tracking algorithms, Directed energy weapons, Optical tracking, Motion models, Atmospheric propagation

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Proceedings Article | 25 October 2004 Paper

Free-space laser communication model

Mikhail Belen'kii, Kevin Hughes, Vincent Rye

Proceedings Volume 5595, (2004) https://doi.org/10.1117/12.570496

KEYWORDS: Scintillation, Receivers, Signal to noise ratio, Atmospheric modeling, Turbulence, Systems modeling, Performance modeling, Atmospheric propagation, Statistical analysis, Visibility

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Proceedings Article | 20 October 2004 Paper

Target edge response

Mikhail Belen'kii, Patti Gillespie, Gary Gimmestad, Kevin Hughes, David Roberts, Vincent Rye, John Stewart, Jack Wood

Proceedings Volume 5550, (2004) https://doi.org/10.1117/12.566077

KEYWORDS: Imaging systems, Image quality, Modulation transfer functions, Cameras, Data acquisition, Point spread functions, Visible radiation, Scintillation, Atmospheric optics, Spatial resolution

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Showing 5 of 9 publications

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