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:
Jul. 05, 2011
Filed:
Apr. 17, 2009
Alain Biem, Hawthorne, NY (US);
Lars Kristen Selberg Daldorff, Helsinki, FI;
Deepak Srinivas Turaga, Hawthorne, NY (US);
Olivier Verscheure, Hawthorne, NY (US);
Alain Biem, Hawthorne, NY (US);
Lars Kristen Selberg Daldorff, Helsinki, FI;
Deepak Srinivas Turaga, Hawthorne, NY (US);
Olivier Verscheure, Hawthorne, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A system to determine a direction of arrival of each of a plurality of constituent signals of a superimposed wave includes a tripole radio antenna, a sampling unit, a frequency determining unit, an amplitude and phase determining unit, and a direction determining unit. The sampling unit is configured to periodically sample an output of the tripole radio antenna to generate at least two samples. The frequency determining unit is configured to determine frequencies for each dimension of the constituent signals by performing a unitary matrix pencil method on the at least two samples. The amplitude and phase determining unit is configured to determine x, y, z amplitudes and x, y, z phases for each constituent signal using the determined frequencies. The direction determining unit is configured to determine a direction of arrival for each of the constituent signals from the determined frequencies, amplitudes, and phases.