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. 13, 2009
Filed:
Jun. 23, 2008
Roy Wiegert, Panama City, FL (US);
John Oeschger, Lynn Haven, FL (US);
Roy Wiegert, Panama City, FL (US);
John Oeschger, Lynn Haven, FL (US);
The United States of America as represented by the Secretary of the Navy, Washington, DC (US);
Abstract
A magnetic anomaly sensing system and method uses at least eight triaxial magnetometer (TM) sensors arranged to define a cubic space. Each TM sensor measures a local magnetic field associated with a target region and generates magnetic field data indicative thereof. The magnetic field data is processed in accordance with a magnetic scalar triangulation and ranging (STAR) processing scheme to determine a plurality of gradient contractions Cat a corresponding plurality of measurement points I to include at least at the center of each face of the cubic space. Gradient contraction pairs are defined for each sensors' X, Y, Z magnetic sensing axes. A directional derivative ∇Cis determined using the gradient contraction pairs and the baseline distances therebetween. A unit vector, calculated using the directional derivative ∇C, is used in determining a projection distance from each of the measurement points toward the target region.