Handheld One-Way Voice Communications System

Award Information
Agency: Department of Defense
Branch: Defense Advanced Research Projects Agency
Contract: 99SB20133
Agency Tracking Number: 99SB20133
Amount: $98,979.00
Phase: Phase I
Program: SBIR
Awards Year: 1999
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
4027 Colonel Glenn Highway,, Suite 210, Dayton, OH, 45431
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Joseph Fernando
 (937) 429-9008
Business Contact
Phone: () -
Research Institution
N/A
Abstract
Not Available Chirp Corporation's biomimetic SAS software detects and classifies buried mines by using clutter feature images. A weakly reflecting target appears as a distinctively shaped hole in surrounding volume clutter. Chirp's rotation-invariant target classifier uses dolphin-like signals for mine discrimination. Mines are also discriminated from other objects by using composite rough/smooth feature images that identify the relatively smooth outer case along with reflections of rough, granular explosive from inside the mine. Chirp uses a semi-coherent, Doppler tolerant broadband tomographic imaging system that is easier to implement and is more robust than fully coherent SAS. All signal processing functions are commensurate with animal sensory system capabilities. Chrip's SAS is equivalent to back projection tomography (as in medical imaging) but is more general because it utilizes feature images and image-based tracking for motion compensation. Higher cognitive function can be emulated by top-down/bottom-up SAS processing, which corresponds to algebraic reconstruction (ART). ART-SAS can be used for image interpretation, sharpening, and multi-path combining via a RAKE-like matched field processor. Area coverage rate is increased by using rotated wavelet models of dolphin space-time transmission patterns, high power pulsed sources, and/or low frequency Doppler tolerant bat-like FM signals. Objectives are to test and develop this system.

* Information listed above is at the time of submission. *

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