Timothy R Graham

US Patent:

8289203, Oct 16, 2012

Filed:

Jun 28, 2010

Appl. No.:

12/824737

Inventors:

Daniel R. Culkin - Cazenovia NY, US
Timothy D. Graham - Liverpool NY, US

Assignee:

SRC, Inc. - North Syracuse NY

International Classification:

G01S 13/00

US Classification:

342 73, 342 81, 342117, 342154

Abstract:

The present invention is directed to a radar system that includes an antenna array having a plurality of antenna elements and a plurality of transmit antenna phase centers. A transmitter portion is configured to transmit a plurality of transmit beams characterized by a transmit beam pattern. The transmit beam pattern has a predetermined transmit beamwidth that is a function of the number of orthogonal transmit waveforms. The number of orthogonal transmit waveforms is less than the plurality of antenna elements. A receiver portion is also coupled to the antenna array and is configured to extract a plurality of orthogonal receive signal components from a received signal provided by the antenna array. A plurality of extracted orthogonal receive signal components are digitally beam formed to implement a virtual antenna array and generate a receive signal having a receive beamwidth.

US Patent:

8294609, Oct 23, 2012

Filed:

Apr 28, 2010

Appl. No.:

12/768965

Inventors:

Timothy David Graham - Liverpool NY, US

Assignee:

SRC, Inc. - North Syracuse NY

International Classification:

G01S 7/42
G01S 13/00

US Classification:

342 90, 372 13, 372 89, 372 95

Abstract:

A method of using a discriminant analysis and Kalman filter cascade to improve the accuracy of point of origin solutions. Tracking information about a potential target is utilized by an initial discrimination function to classify the target as a projectile. Using that information, the output of a first Kalman filter is fed into an additional discrimination function to further classify the type or sub-class of the projectile. A second Kalman filter can employ type-specific information to obtain a point of origin solution with increased efficiency and accuracy.

US Patent:

8547275, Oct 1, 2013

Filed:

Nov 29, 2010

Appl. No.:

12/955374

Inventors:

Daniel R. Culkin - Cazenovia NY, US
Timothy David Graham - Liverpool NY, US

Assignee:

SRC, Inc. - North Syracuse NY

International Classification:

G01S 13/00
H01Q 21/20

US Classification:

342153, 342154

Abstract:

An antenna architecture for hemispherically-scanning active electronically scanned arrays (AESA). The antenna architecture utilizes variable diameter disks of antenna elements configured in a conical implementation. The antenna elements are oriented such that the element boresight is normal to the surface of the conical structure. Beamforming takes place on each disk first, and them separately in combining the signals from each disk, thereby reducing complexity. The antenna optionally utilizes disks of antenna elements of the same diameter to form a cylindrical antenna, which when combined with a conical configuration create enhanced sectors while maintaining a hemispherical coverage capability. Further, use of two conical configurations can produce a fully spherical coverage capability.

US Patent:

20130335269, Dec 19, 2013

Filed:

Aug 20, 2013

Appl. No.:

13/971062

Inventors:

Timothy David Graham - Liverpool NY, US

Assignee:

SRC, Inc. - North Syracuse NY

International Classification:

H01Q 21/20

US Classification:

342371

Abstract:

An antenna architecture for hemispherically-scanning active electronically scanned arrays (AESA). The antenna architecture utilizes variable diameter disks of antenna elements configured in a conical implementation. The antenna elements are oriented such that the element boresight is normal to the surface of the conical structure. Beamforming takes place on each disk first, and them separately in combining the signals from each disk, thereby reducing complexity. The antenna optionally utilizes disks of antenna elements of the same diameter to form a cylindrical antenna, which when combined with a conical configuration create enhanced sectors while maintaining a hemispherical coverage capability. Further, use of two conical configurations can produce a fully spherical coverage capability.

US Patent:

59428503, Aug 24, 1999

Filed:

Sep 24, 1997

Appl. No.:

8/935473

Inventors:

Douglas M. Rutan - Auburn NY
Diane M. Salvati - Skaneateles NY
Timothy W. Graham - Union Springs NY

Assignee:

Welch Allyn, Inc. - Skaneateles Falls NY

International Classification:

H01J 1720
H01J 6112

US Classification:

313571

Abstract:

A high performance miniature projection lamp which includes a glass envelope having a pair of opposite neck portions each with a coaxial central opening having a reduced section and an hermetically sealed central chamber having a volume of about 130 mm. sup. 3 which contains a fill. The fill includes an argon pressure at room temperature at a range of about 0. 5 atmospheres to about 2. 0 atmospheres and mercury in an amount in the range of about 5 mg to about 15 mg, and a mixture of metal halide material in an amount from about 50 up to 1000 micrograms. A pair of axially aligned electrodes are positioned at opposite neck portions and separated form each other by a predetermined distance. The electrodes each have a shank portion which each having a coil wrapped around its end.

US Patent:

50591460, Oct 22, 1991

Filed:

Feb 22, 1990

Appl. No.:

7/483901

Inventors:

Brian J. Thomas - Phoenix NY
Timothy W. Graham - Union Springs NY
Daniel C. Briggs - Camillus NY

Assignee:

Welch Allyn, Inc. - Skaneateles Falls NY

International Classification:

H01J 942

US Classification:

445 4

Abstract:

Apparatus and a method for combining radiant energy of substantially distinct spectral bands to produce a light source having predetermined color temperature or chromaticity characteristics. The apparatus comprises a generating source that generates emissions of radiant energy from at least two spatial emission regions. Each of the spatial emission regions emits radiant energy in a substantially distinct spectral band. The apparatus further comprises an optical directing system that directs a substantial portion of the radiant energy emitted from the emission regions. The optical directing system includes a positioning region that contains a near focus and a combining region that contains a far focus. The generating source is supported substantially within the positioning region of the optical directing system such that the radiant energy, emitted from the spatial emission regions, is substantially directed to the far focus and combined within the combining region to produce an effective light source having predetermined color temperature or chromaticity characteristics.

US Patent:

54204771, May 30, 1995

Filed:

Jan 15, 1993

Appl. No.:

8/004924

Inventors:

John W. Sims - Weedsport NY
Timothy W. Graham - Union Springs NY

Assignee:

Welch Allyn, Inc. - Skaneateles Falls NY

International Classification:

H01J 1704

US Classification:

313631

Abstract:

A low power metal halide discharge lamp having an improved electrode structure. Two elongated electrodes fabricated of a doped tungsten each extend axially through a respective neck of a bulb into an arc chamber. Each of electrode comprises a lead-in wire having a diameter ranging between about 0. 003 to 0. 018 inches that enters the arc chamber. A post member is mounted on the lead-in wire, out of contact with the associated neck, and is preferably welded to the lead-in. The post member has a flat distal surface for transferring heat to vapors in said arc chamber. It is larger in diameter than its associated lead-in wire, and has a diameter in a range of 0. 005 to 0. 040 inches. The flat distal surfaces of the two post members face one another in spaced apart relationship, the space therebetween forming an arc gap. In operation the distal surfaces of the post members have relatively large areas in contact with vapors in the arc chamber for heat transfer, and the heat is sufficiently dispersed in the distal region of the post members to prevent burn back.

US Patent:

51441900, Sep 1, 1992

Filed:

May 10, 1991

Appl. No.:

7/698074

Inventors:

Brian J. Thomas - Phoenix NY
Timothy W. Graham - Union Springs NY
Daniel C. Briggs - Camillus NY

Assignee:

Welch Allyn, Inc. - Skaneateles Falls NY

International Classification:

H01J 516

US Classification:

313113

Abstract:

Apparatus and a method for combining radiant energy of substantially distinct spectral bands to produce a light source having predetermined color temperature or chromaticity characteristics. The apparatus includes a generating source that generates emissions of radiant energy from at least two spatial emission regions. Each of the spatial emission regions emits radiant energy in a substantially distinct spectral band. The apparatus further includes an optical directing system that directs a substantial portion of the radiant energy emitted from the emission regions. The optical directing system includes a positioning region that contains a near focus and a combining region that contains a far focus. The generating source is supported substantially within the positioning region of the optical directing system such that the radiant energy, emitted from the spatial emission regions, is substantially directed to the far focus and combined within the combining region to produce an effective light source having predetermined color temperature or chromaticity characteristics.