Ms. Karen E. Yokoyama Profile

Karen E. Yokoyama

Staff Engineer at Raytheon

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Author

Publications (9)

Proceedings Article | 15 October 2012 Paper

VIIRS VisNIR/SMWIR end of life sensitivity predictions

Vijay Murgai, Neil Nelson, Eric Johnson, Karen Yokoyama

Proceedings Volume 8510, 85101L (2012) https://doi.org/10.1117/12.932844

KEYWORDS: Ultraviolet radiation, Mirrors, Reflectivity, Tungsten, Signal to noise ratio, Oxides, Solids, Absorption, Sensors, Satellites

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Proceedings Article | 23 November 2011 Paper

Subnanosecond bulk damage thresholds of single-crystal YAG and diffusion-bonded YAG structures at 1 micron

Robert Stultz, Karen Yokoyama, Jeanette Lurier, Michael Ushinsky, Robert Farley, Mark Rogers, Brendan Foran, Michael Thomas, Andrew Griffin

Proceedings Volume 8190, 81900M (2011) https://doi.org/10.1117/12.899148

KEYWORDS: YAG lasers, Laser damage threshold, Crystals, Pulsed laser operation, Laser induced damage, Picosecond phenomena, Interfaces, Diagnostics, Inspection, Laser sources

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Proceedings Article | 7 January 2004 Paper

NGST longwave hyperspectral imaging spectrometer system characterization and calibration

Karen Yokoyama, Harold Miller, Ted Hedman, Sveinn Thordarson, Miguel Figueroa, John Shepanski, Peter Jarecke, Steven Lai

Proceedings Volume 5159, (2004) https://doi.org/10.1117/12.505840

KEYWORDS: Calibration, Modulation transfer functions, Spectroscopy, Black bodies, Staring arrays, Hyperspectral imaging, Spectral calibration, Imaging systems, Mirrors, Monochromators

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Proceedings Article | 7 January 2004 Paper

Longwave hyperspectral imaging spectrometer design and implementation

Harold Miller, Karen Yokoyama, Kent Rasmussen, Tom Engler, Jim Rupert, Bruce Flegal, Peter Jarecke

Proceedings Volume 5159, (2004) https://doi.org/10.1117/12.505804

KEYWORDS: Sensors, Hyperspectral imaging, Staring arrays, Spectroscopy, Performance modeling, Aerospace engineering, Imaging systems, Mirrors, Spectrometer engineering, Reflectivity

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Proceedings Article | 17 January 2002 Paper

On-orbit solar radiometric calibration of the Hyperion instrument

Peter Jarecke, Karen Yokoyama, Pamela Barry

Proceedings Volume 4480, (2002) https://doi.org/10.1117/12.453343

KEYWORDS: Calibration, Lamps, Sensors, Radiometry, Diffuse reflectance spectroscopy, Silicon, Sun, Bidirectional reflectance transmission function, Telescopes, Reflectivity

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Proceedings Article | 15 November 2000 Paper

Radiometric calibration transfer chain from primary standards to the end-to-end Hyperion sensor

Peter Jarecke, Karen Yokoyama

Proceedings Volume 4135, (2000) https://doi.org/10.1117/12.494252

KEYWORDS: Sensors, Lamps, Calibration, Radiometry, Free electron lasers, Standards development, Silicon, Sensor calibration, Reflectivity, Photodiodes

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Proceedings Article | 21 August 1998 Paper

Passive millimeter-wave video camera

Larry Yujiri, Hiroshi Agravante, Steven Fornaca, Bruce Hauss, Ronald Johnson, Roger Kuroda, Bill Quon, Arlen Rowe, Thomas Samec, Merit Shoucri, Karen Yokoyama

Proceedings Volume 3378, (1998) https://doi.org/10.1117/12.319397

KEYWORDS: Cameras, Video, Staring arrays, Passive millimeter wave sensors, Receivers, Image processing, Video surveillance, Prototyping, Defense and security, Imaging systems

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Proceedings Article | 27 June 1997 Paper

Passive millimeter-wave camera

Larry Yujiri, Hiroshi Agravante, Mike Biedenbender, G. Samuel Dow, Martin Flannery, Steven Fornaca, Bruce Hauss, Ronald Johnson, Roger Kuroda, Karen Jordan, Paul Lee, Dennis Lo, Bill Quon, Arlen Rowe, Thomas Samec, Merit Shoucri, Karen Yokoyama, John Yun

Proceedings Volume 3064, (1997) https://doi.org/10.1117/12.277080

KEYWORDS: Cameras, Staring arrays, Receivers, Image processing, Video, Manufacturing, Calibration, Passive millimeter wave sensors, Prototyping, Passive millimeter wave imaging

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Proceedings Article | 2 July 1994 Paper

Demonstration of a series array interferometer logic (SAIL) superconductive digital circuit

Karen Yokoyama, Steve Schwarzbek, Roger Davidheiser, Jerome Luine, Neal Schneier

Proceedings Volume 2160, (1994) https://doi.org/10.1117/12.181006

KEYWORDS: Multiplexers, Digital electronics, Cryogenics, Switches, Modulators, Electronics, Cryocoolers, Logic, Telecommunications, Packaging

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Showing 5 of 9 publications

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