Mr. Roy Walmsley Profile

Roy Walmsley

at Chemring Countermeasures Ltd

SPIE Involvement:

Author

Publications (16)

Proceedings Article | 15 October 2013 Paper

Comparison of MODTRAN5 to measured data in the UV band

Leon Smith, Mark Richardson, Roy Walmsley

Proceedings Volume 8898, 88980F (2013) https://doi.org/10.1117/12.2028148

KEYWORDS: Ultraviolet radiation, Clouds, Missiles, Atmospheric modeling, Target detection, Spectroscopy, Sun, Data modeling, Atmospheric particles, Data archive systems

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SPIE Journal Paper | 4 February 2013

Countermeasure effectiveness against an intelligent imaging infrared anti-ship missile

Greer Gray, Nabil Aouf, Mark Richardson, Brian Butters, Roy Walmsley

OE, Vol. 52, Issue 2, 026401, (February 2013) https://doi.org/10.1117/12.10.1117/1.OE.52.2.026401

KEYWORDS: Missiles, Infrared imaging, Neural networks, Infrared radiation, Detection and tracking algorithms, Binary data, Image processing, Algorithm development, Clouds, Computer simulations

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Proceedings Article | 8 November 2012 Paper

An intelligent tracking algorithm for an imaging infrared anti-ship missile

Greer Gray, Nabil Aouf, Mark Richardson, Brian Butters, Roy Walmsley

Proceedings Volume 8543, 85430L (2012) https://doi.org/10.1117/12.978264

KEYWORDS: Missiles, Neural networks, Detection and tracking algorithms, Algorithm development, Infrared radiation, Infrared imaging, Coastal modeling, Image processing, Imaging infrared seeker, Feature extraction

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SPIE Journal Paper | 1 December 2011

Countermeasure effectiveness against a man-portable air-defense system containing a two-color spinscan infrared seeker

James Jackman, Mark Richardson, Brian Butters, Roy Walmsley

OE, Vol. 50, Issue 12, 126401, (December 2011) https://doi.org/10.1117/12.10.1117/1.3657507

KEYWORDS: Imaging infrared seeker, Missiles, Reticles, 3D modeling, Sensors, Signal processing, Optical engineering, Systems modeling, Signal detection, Electro optical modeling

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Proceedings Article | 7 October 2011 Paper

Modelling a man-portable air-defence (MANPAD) system with a conical scan two-colour infrared (IR) seeker

James Jackman, Mark Richardson, Brian Butters, Roy Walmsley

Proceedings Volume 8187, 81870S (2011) https://doi.org/10.1117/12.897118

KEYWORDS: Imaging infrared seeker, Missiles, Signal processing, Infrared radiation, 3D modeling, Modeling, Reticles, Sensors, Software development, Infrared telescopes

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Proceedings Article | 7 October 2011 Paper

Feature-based tracking algorithms for imaging infrared anti-ship missiles

Greer Gray, Nabil Aouf, Mark Richardson, Brian Butters, Roy Walmsley, Edgar Nicholls

Proceedings Volume 8187, 81870T (2011) https://doi.org/10.1117/12.897284

KEYWORDS: Missiles, Detection and tracking algorithms, Clouds, Infrared radiation, Infrared imaging, Sensors, Image processing, Binary data, Computer simulations, Image sensors

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Proceedings Article | 7 October 2011 Paper

Infrared decoy and obscurant modelling and simulation for ship protection

Brian Butters, Edgar Nicholls, Roy Walmsley, Richard Ayling

Proceedings Volume 8187, 81870Q (2011) https://doi.org/10.1117/12.898654

KEYWORDS: Missiles, Image processing, Infrared imaging, 3D modeling, Algorithm development, Signal processing, MATLAB, Thermography, Visualization, Clouds

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Proceedings Article | 12 October 2010 Paper

Effect of pre-emptive flares on Man-Portable Air-Defence (MANPAD) systems with a track angle bias counter-countermeasure (CCM)

James Jackman, Mark Richardson, Brian Butters, Roy Walmsley, Nic Millwood, Peter Yuen, David James

Proceedings Volume 7836, 78360N (2010) https://doi.org/10.1117/12.866252

KEYWORDS: Missiles, Reticles, Head, Imaging infrared seeker, Lead, Sensors, Signal processing, 3D modeling, Systems modeling, Amplitude modulation

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Proceedings Article | 12 October 2010 Paper

Effect of payload size on pre-emptive flare countermeasure against man-portable air-defence (MANPAD) system

James Jackman, Mark Richardson, Peter Yuen, David James, Brian Butters, Roy Walmsley, Nic Millwood

Proceedings Volume 7836, 78360M (2010) https://doi.org/10.1117/12.866251

KEYWORDS: Missiles, Lead, Signal processing, 3D modeling, Sensors, Optical simulations, Computer simulations, Performance modeling, Reticles, Signal detection

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Proceedings Article | 26 September 2009 Paper

MANPADS protection for civil aircraft using an expendable decoy

Roy Walmsley, Johan Friede, Nicolas Millwood, Brian Butters

Proceedings Volume 7483, 74830J (2009) https://doi.org/10.1117/12.830069

KEYWORDS: Missiles, Safety, 3D modeling, Infrared radiation, Modeling and simulation, Modeling, Combustion, Performance modeling, Computer aided design, Cadmium sulfide

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Proceedings Article | 26 September 2009 Paper

Analysis of first generation MANPAD attacks on fast jets

James Jackman, Mark Richardson, Brian Butters, Roy Walmsley, Nic Millwood, Peter Yuen, David James

Proceedings Volume 7483, 74830I (2009) https://doi.org/10.1117/12.829464

KEYWORDS: Missiles, Lead, 3D modeling, Error analysis, Computer simulations, Head, Signal detection, Signal processing, Sensors, Weapons

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Proceedings Article | 2 October 2008 Paper

Use of a transmissometer model for infrared smoke model validation and assessment of obscuration and detection times

Brian Butters, Roy Walmsley

Proceedings Volume 7115, 71150T (2008) https://doi.org/10.1117/12.803650

KEYWORDS: Clouds, Modulation, Data modeling, Thermal modeling, Light sources, Thermography, Coastal modeling, 3D modeling, Infrared radiation, Optical spheres

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Proceedings Article | 10 October 2007 Paper

Infrared smoke modelling in CounterSim

Roy Walmsley, Brian Butters

Proceedings Volume 6738, 67380P (2007) https://doi.org/10.1117/12.737376

KEYWORDS: Visualization, Infrared radiation, Modeling, Thermography, RGB color model, Thermal modeling, 3D modeling, Computer simulations, Clouds, Cameras

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Proceedings Article | 5 October 2006 Paper

Modelling the improved protection of fast jets from the IR MANPADS threat

M. Richardson, N. Tranquillino-Minerva, B. Butters, R. Walmsley, R. Ayling, N. Millwood

Proceedings Volume 6397, 63970F (2006) https://doi.org/10.1117/12.690191

KEYWORDS: Missiles, Aerodynamics, Imaging infrared seeker, Kinematics, Modeling, Fourier transforms, Lead, Systems modeling, Signal processing, Control systems

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Proceedings Article | 4 November 2005 Paper

Escorting commercial aircraft to reduce the MANPAD threat

Nicholas Hock, M. Richardson, B. Butters, R. Walmsley, R. Ayling, B. Taylor

Proceedings Volume 5989, 59890B (2005) https://doi.org/10.1117/12.626996

KEYWORDS: Missiles, Systems modeling, Defense systems, Modeling, Infrared signatures, Weapons, Target detection, Defense and security, Modeling and simulation, Infrared countermeasures

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Proceedings Article | 4 November 2005 Paper

Modelling of countermeasures for AFV protection against IR SACLOS systems

R. Walmsley, B. Butters, R. Ayling, M. Richardson

Proceedings Volume 5989, 59890C (2005) https://doi.org/10.1117/12.629443

KEYWORDS: Missiles, Imaging systems, Image processing, 3D modeling, Infrared imaging, Thermography, Clouds, Signal processing, Modeling, Target designation

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Showing 5 of 16 publications

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