Utilizing Optical Defocusing and Computational Imaging for Laser Intensity Reduction at CCD Focal Planes

Award Information
Agency: Department of Defense
Branch: Army
Contract: W911QX-11-C-0105
Agency Tracking Number: A2-4058
Amount: $719,532.00
Phase: Phase II
Program: SBIR
Awards Year: 2011
Solicitation Year: 2008
Solicitation Topic Code: A08-064
Solicitation Number: 2008.2
Small Business Information
Aerodyne Research, Inc.
45 Manning Road, Billerica, MA, -
DUNS: 030817290
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Stephen Jones
 Principal Engineer
 (978) 663-9500
 sjones@aerodyne.com
Business Contact
 Charles Kolb
Title: President
Phone: (978) 663-9500
Email: kolb@aerodyne.com
Research Institution
 Stub
Abstract
Sensor protection against agile-frequency lasers is a critical Army Technology Objective (ATO). We propose simple defocusing of existing sensor optics as a layer within the optical limiting (OL) stack. This requires no additional optical components, and promotes compatibility with other OL stack elements. The challenge resides in computing the inverse filtering operation to recover the in-focus image for real-time display. Our Phase I results demonstrated a debluring algorithm capable of performing at realistic signal to noise ratios against acquired imagery using actual standard COTS lenses. We showed the algorithm works well in fixed point arithmetic and thus is amenable to implementation on field programmable gate array (FPGA) hardware, a critical aspect of real-time implementation. In Phase 2, we will demonstrate and deliver a real-time CD (Computational Deblurring) prototype system, comprised of a purposely defocused COTS CCD video camera interfaced to a COTS host PC and integrated CD Processor. The COTS CD Processor will run a customized CD algorithm that deblurs 3 megapixel defocused color imagery at 30 fps. Our team member, using technology spun out of the University of Notre Dame which effectively confronts the memory bandwidth bottleneck in embedded processors, is uniquely qualified to produce the minimal-resources CD Processor.

* information listed above is at the time of submission.

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