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. 07, 2002
Filed:
Apr. 26, 2001
Gregory Michael Kautz, Burnt Hills, NY (US);
Jeffrey Michael Ashe, Gloversville, NY (US);
Seth David Silverstein, Charlottesville, VA (US);
Lockheed Martin Corporation, Bethesda, MD (US);
Abstract
A method for calibrating a remote system having a plurality of N elements, N being a positive integer number. An input signal to each of the N elements is processed according to beamforming bits to determine the output of a corresponding element. The output of the plurality of N elements is a composite signal. The method includes the steps of: (a) transmitting a calibration signal to input the plurality of N elements of the remote system; (b) selecting a first set of beamforming bits for each of the plurality of N elements based upon entries of a predetermined invertible matrix; (c) processing the calibration signal at the remote system according to the beamforming bits for each of the N plurality of elements; (d) detecting a reference signal from the remote system and the composite signal transmitted from the N plurality of elements based on the first set of beamforming bits; (e) repeating steps (b)-(d) for successive sets of beamforming bits to generate a set of signals; and (f) processing the set of signals for generating calibration data for each of the N plurality of elements of the remote system. Preferably, the remote system comprises a phased array system and wherein each of the N plurality of elements comprises an individual antenna in the phased array system.