The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 24, 2006
Filed:
Aug. 24, 2004
James Edwin Barger, Winchester, MA (US);
Stephen Douglas Milligan, Stow, MA (US);
Marshall Seth Brinn, Newton, MA (US);
Richard J. Mullen, Needham, MA (US);
James Edwin Barger, Winchester, MA (US);
Stephen Douglas Milligan, Stow, MA (US);
Marshall Seth Brinn, Newton, MA (US);
Richard J. Mullen, Needham, MA (US);
BBN Technologies Corp., Cambridge, MA (US);
Abstract
Systems and methods for locating the shooter of supersonic projectiles based on shockwave-only measurements are described. Muzzle blast signals are neither sought nor required. The system uses at least five, preferably seven, acoustic sensors that are spaced apart at least 1 meter. The sensor signals are acquired with a time resolution in the order of microseconds and processed to find and disambiguate the shockwave arrival angle unit vector. Two different Time-Difference-Of-Arrival (TDOA) measurement techniques are described, with one technique using counters in each signal channel and the other technique using cross-correlation between signal channels. A genetic algorithm can be used to efficiently disambiguate the results.