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:
Sep. 27, 2016
Filed:
Mar. 15, 2013
Lockheed Martin Corporation, Bethesda, MD (US);
John R. MacGillivray, Fayetteville, NY (US);
David L. Graham, Pennellville, NY (US);
Dane E. Reiner, Liverpool, NY (US);
Lockheed Martin Corporation, Bethesda, MD (US);
Abstract
A method and apparatus for identifying an unidentified sound source in a 3-dimensional sensor array calculates a position vector for each of a plurality of sensors in the array. A time Fourier transform is computed based on time samples from each of the sensors. A spatial Fourier transform is computed for the results of the time Fourier transform and in part on the position vectors calculated. All three dimensional components of the wavenumber of the received signal, k, kand kare explicitly calculated to generate spatial frequency information in all three dimensions. Direction of arrival of the received sound signal is determined in all three spatial directions providing unambiguous target localization and acoustic signature characterization.