Thomas M Canavan

US Patent:

20100117905, May 13, 2010

Filed:

Nov 7, 2008

Appl. No.:

12/267429

Inventors:

Thomas J. Barnard - Liverpool NY, US
Thomas M. Canavan - Syracuse NY, US

Assignee:

Lockheed Martin Corporation - Bethesda MD

International Classification:

G01S 3/16

US Classification:

342381, 342382

Abstract:

This invention relates to the use of a sufficiently-sampled auxiliary array in combination with one or more under-sampled sub-arrays. The sufficiently-sampled auxiliary array is used to create a signal-free reference (SFR) beam that contains grating lobe interference. The SFR may be used to cancel the interfering grating lobe in an under-sampled main beam by coherently eliminating or subtracting the SFR from the main beam. Exemplary aspects of the invention thus support significant under population of the full aperture and avoid the problems and limitations of previous solution, with consequent savings in sensor hardware cost and weight.

US Patent:

20130033969, Feb 7, 2013

Filed:

May 3, 2012

Appl. No.:

13/463649

Inventors:

Thomas J. Barnard - Baldwinsville NY, US
Thomas M. Canavan - Tully NY, US
Dane E. Reiner - Liverpool NY, US
Jennifer L. Pawelczyk - Syracuse NY, US
Casey D. Dyer - Liverpool NY, US
Joseph E. Nickerson - Fairfax VA, US
Hema Sundaramurthy - Fayetteville NY, US
Andrew J. Cleary - Liverpool NY, US
John H. Goodemote - Sauquoit NY, US
Dennis C. Stimson - Baldwinsville NY, US
Howard R. Taylor - Centreville VA, US

International Classification:

G01H 9/00

US Classification:

367149

Abstract:

A sensor system includes a pressure sensor portion, and an accelerometer. Outputs from the sensor system are handled by a signal processing system that includes a first beamforming module for inputs from a pressure sensor, a second beamforming module for inputs from an accelerometer, and an adaptive beam interpolation module. A method for signal processing signals from both a pressure sensor and an accelerometer. An array of sensors transfers data wirelessly.