Ms. Hope Runyeon Profile

Hope Runyeon

at Trex Enterprises Corp

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Author

Publications (4)

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.

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