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:
Apr. 20, 2010
Filed:
Aug. 26, 2008
Harry A. Schmitt, Tucson, AZ (US);
Donald E. Waagen, Tucson, AZ (US);
Nitesh N. Shah, Tucson, AZ (US);
Delmar L. Barker, Tucson, AZ (US);
Andrew D. Greentree, Fawkner, AU;
Harry A. Schmitt, Tucson, AZ (US);
Donald E. Waagen, Tucson, AZ (US);
Nitesh N. Shah, Tucson, AZ (US);
Delmar L. Barker, Tucson, AZ (US);
Andrew D. Greentree, Fawkner, AU;
Raytheon Company, Waltham, MA (US);
Abstract
The present invention describes a system and method of OAM diverse signal processing using classical beams for applications in which OAM signal character is controlled such as optical tagging and applications in which OAM signal character is not controlled such as clutter mitigation and interference cancellation for target detection, identification etc. This is accomplished by transmitting a source beam having a prescribed state with one or more non-zero OAM components, reflecting the beam off a 'tagged' or 'untagged' target and receiving the return beam in the direct return path to measure the one or more OAM components to identify the target. OAM processing provides additional degrees of processing freedom to greatly enhance the processing capabilities to detect and identify both ‘tagged’ and ‘untagged’ targets.