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Poynting-vector based method for determining the bearing and location of electromagnetic sources

United States Patent

October 21, 2008
View the Complete Patent at the US Patent & Trademark Office
Lawrence Livermore National Laboratory - Visit the Industrial Partnerships Office Website
Improved Characterization and Monitoring of Electromagnetic Sources
A method and apparatus is utilized to determine the bearing and/or location of sources, such as, alternating current (A.C.) generators and loads, power lines, transformers and/or radio-frequency (RF) transmitters, emitting electromagnetic-wave energy for which a Poynting-Vector can be defined. When both a source and field sensors (electric and magnetic) are static, a bearing to the electromagnetic source can be obtained. If a single set of electric (E) and magnetic (B) sensors are in motion, multiple measurements permit location of the source. The method can be extended to networks of sensors allowing determination of the location of both stationary and moving sources.
Simons; David J. (Modesto, CA), Carrigan; Charles R. (Tracy, CA), Harben; Philip E. (Livermore, CA), Kirkendall; Barry A. (Golden, CO), Schultz; Craig A. (Danville, CA)
Lawrence Livermore National Security, LLC (Livermore, CA)
11/ 404,609
April 13, 2006
The United States Government has rights in this invention pursuant to Contract No. W-7405-ENG-48 between the United States Department of Energy and the University of California for the operation of Lawrence Livermore National Laboratory.