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:
May. 14, 2013
Filed:
Aug. 31, 2010
Vibeke Libby, Woodside, CA (US);
Vibeke Libby, Woodside, CA (US);
Lockheed Martin Corporation, Bethesda, MD (US);
Abstract
Systems and methods for detecting one or more changes in a monitored environment are provided. A method includes transmitting interrogation signals to sensors distributed in a monitored environment at a substantially constant power. A first set of the interrogation signals is transmitted to a first sensor. The method also includes receiving first response signals from the first sensor in response to the first set of interrogation signals transmitted to the first sensor. The method also includes determining an average parameter of the first response signals from the first sensor. The method also includes comparing the average parameter of the first response signals to an average parameter of baseline signals corresponding to the first sensor. The method also includes determining a statistical significance of the average parameter of the first response signals based on the comparison, and generating a change detection indicator based on the statistical significance.