Dr. Jeremy W. Copley Profile

Dr. Jeremy W. Copley

at SELEX Galileo Ltd

SPIE Involvement:

Author

Publications (5)

Proceedings Article | 28 May 2014 Paper

Long range 3D imaging with a 32x32 Geiger mode InGaAs/InP camera

Philip Hiskett, Karen Gordon, Jeremy Copley, Robert Lamb

Proceedings Volume 9114, 91140I (2014) https://doi.org/10.1117/12.2050540

KEYWORDS: Cameras, Pulsed laser operation, Imaging systems, Clocks, Photography, Clouds, LIDAR, Sensors, 3D acquisition, Data acquisition

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Proceedings Article | 18 April 2008 Paper

Advanced infrared detectors for multimode active and passive imaging applications

Ian Baker, Daniel Owton, Keith Trundle, Peter Thorne, Kevin Storie, Philip Oakley, Jeremy Copley

Proceedings Volume 6940, 69402L (2008) https://doi.org/10.1117/12.780469

KEYWORDS: Sensors, Imaging systems, Cameras, 3D image processing, Pulsed laser operation, Thermography, Mercury cadmium telluride, Electronics, Multiplexers, 3D acquisition

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Proceedings Article | 17 May 2006 Paper

Advanced multifunctional detectors for laser-gated imaging applications

Ian Baker, Peter Thorne, James Henderson, Jeremy Copley, David Humphreys, Alasdair Millar

Proceedings Volume 6206, 620608 (2006) https://doi.org/10.1117/12.673577

KEYWORDS: Sensors, Thermography, Imaging systems, Mercury cadmium telluride, Pulsed laser operation, Image sensors, 3D image processing, Signal processing, Laser applications, Multiplexers

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The rapid pace of development in the field of long-range imaging is illustrated by two new detector technologies for passive and active imaging. Active systems, using a near-infrared pulse laser and a fast, gated detector, are now adopted for most long range imaging applications. This concept is often called burst-illumination LIDAR or BIL. The SELEX solid state detector is based on two major components: an array of HgCdTe avalanche photodiodes, and a custom-designed CMOS multiplexer to perform the fast gating and photon signal capture. These hybrid arrays produce sensitivities as low as 10 photons rms, due largely to very high, almost noise-free avalanche gain in the HgCdTe diodes. The sensitivity, dynamic range and image quality is now such that the camera performance is usually limited by coherence and scintillation effects in the scene. With this strong sensor capability, it has been possible to launch the next generation of multiplexers to satisfy systems of the future. For instance, most laser-gated imaging systems use a suite of passive infrared and visible cameras to complement the BIL channel. It is highly advantageous to combine these functions into one electro-optic system, leading to a simpler, smaller, lower power and lower cost system. The key technical steps are to find solutions for the difficult multifunctional detector and the dual-wavelength optic. A detector has been developed to image passively in the medium and short wavebands, and actively in BIL mode. The performance of the detector and optic is described. Another major systems enhancement is to be able to generate 3D images, particularly in complex scenes, to further improve background clutter rejection and provide agile, feedback control of the range gating in a dynamic environment. Here the detector senses the range, as well as the laser pulse intensity, on a pixel-by-pixel basis, providing depth context for each laser pulse. A prototype detector has been successfully demonstrated and shown to provide good quality 2D and 3D data for each laser pulse.

Proceedings Article | 17 May 2006 Paper

Advances in laser gated imaging in an airborne environment

Stuart Duncan, Jeremy Copley, Graeme Harvey, David Humphreys, John Gonglewski, Ian Baker

Proceedings Volume 6206, 620607 (2006) https://doi.org/10.1117/12.673644

KEYWORDS: Sensors, Imaging systems, Image processing, Control systems, Gated imaging, Algorithm development, Pulsed laser operation, Atmospheric turbulence, Short wave infrared radiation, Airborne laser technology

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Proceedings Article | 30 August 2004 Paper

A low-noise laser-gated imaging system for long-range target identification

Ian Baker, Stuart Duncan, Jeremy Copley

Proceedings Volume 5406, (2004) https://doi.org/10.1117/12.541484

KEYWORDS: Sensors, Imaging systems, Thermography, Pulsed laser operation, Mercury cadmium telluride, Gated imaging, Control systems, Target recognition, Photodiodes, Receivers

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