Gary L Coleman

US Patent:

8294879, Oct 23, 2012

Filed:

Dec 13, 2010

Appl. No.:

12/966466

Inventors:

John F. Silny - Los Angeles CA, US
Gary D. Coleman - El Segundo CA, US

Assignee:

Raytheon Company - Waltham MA

International Classification:

G01C 3/08

US Classification:

356 401, 356 301, 356 41, 356 501

Abstract:

A multi-directional sensor system includes a light source configured to generate a beam of electromagnetic radiation; and a transmitter configured to transmit the beam of electromagnetic radiation to a target. The transmitter may include (i) a plurality of optical fibers, wherein one or more of the optical fibers are configured to receive the beam of electromagnetic radiation, and (ii) a surface on which one end of each of the plurality of optical fibers terminate in a different direction and/or orientation thereof to emit electromagnetic radiation. A detector is configured to detect electromagnetic radiation responsive to electromagnetic radiation transmitted to the target. A method of sensing is also disclosed.

US Patent:

20120302160, Nov 29, 2012

Filed:

May 27, 2011

Appl. No.:

13/117700

Inventors:

John F. SILNY - Los Angeles CA, US
Gary D. COLEMAN - Redondo Beach CA, US
William J. MINISCALCO - Sudbury MA, US
James MCSPADDEN - Allen TX, US

Assignee:

RAYTHEON COMPANY - Waltham MA

International Classification:

H04B 7/185

US Classification:

455 121

Abstract:

Various embodiments provide a satellite communication system including a first transceiver and a second transceiver geographically fixed on the earth, and a first satellite configured to communicate with the first transceiver through a first link. The system further includes a second satellite configured to communicate with the second transceiver through a second link and communicate with the first satellite through a laser communication crosslink. The first satellite and the second satellite are at a low earth orbit or medium earth orbit below the geostationary earth orbit of approximately 36000 km.

US Patent:

20140016932, Jan 16, 2014

Filed:

Jul 13, 2012

Appl. No.:

13/549177

Inventors:

Gary D. Coleman - Redondo Beach CA, US
Duane Smith - Rancho Palos Verdes CA, US
David Filgas - Newbury Park CA, US

Assignee:

RAYTHEON COMPANY - Waltham MA

International Classification:

H04B 10/10
H04J 14/02

US Classification:

398 48, 398 45, 398 43

Abstract:

A free space optical communication system () and method including: several optical beam expanders () for receiving incoming optical signals from ground sites and neighboring satellites; several optical preamplifiers () for preamplifying the received optical signals; one or more optical main amplifiers () for amplifying the preamplified optical signals; and an optical switch () for directing respective amplified optical signals to respective destinations via a respective optical beam expander. The respective amplified optical signals are inputted to a respective optical beam expander () for transmission to said respective destinations, as outgoing optical signals.

US Patent:

20140016941, Jan 16, 2014

Filed:

Jul 13, 2012

Appl. No.:

13/549191

Inventors:

Gary D. Coleman - Redondo Beach CA, US
Duane Smith - Rancho Palos Verdes CA, US
John F. Silny - Playa Vista CA, US

Assignee:

RAYTHEON COMPANY - Waltham MA

International Classification:

H04B 10/16

US Classification:

398121

Abstract:

A free space optical communication system () and method including a constellation of several satellites (). Each of satellites including: several inter-satellite optical telescopes () for optical communication with multiple neighboring satellites, each inter-satellite optical telescope is capable of adjusting its elevation angle; and several up/down link optical telescopes () for optical communication with multiple ground sites. As the constellation passes a given ground site, some of the up/down-link telescopes of a given satellite are configured to track at least two respective ground optical telescopes of the given ground site and send data to the ground optical telescope with the clearest line of sight to the given satellite. Moreover, each of the satellites includes optical circuitry () for optically processing and switching incoming and outgoing optical signals without converting the optical signals into electrical signals.

US Patent:

20160021436, Jan 21, 2016

Filed:

Jul 18, 2014

Appl. No.:

14/335693

Inventors:

- Waltham MA, US
Gary D. Coleman - Redondo Beach CA, US

International Classification:

H04Q 11/00
G02B 6/26
G02B 6/35

Abstract:

Device and method for optically switching a plurality of optical input signals include: receiving the plurality of optical input signals, wherein one or more of the optical input signals represent multiple channels at different channel frequencies; collimating the received plurality of optical input signals; removing noise between the channels by a comb filter; dispersing the collimated optical signals so that signals of different wavelength are separated by different angles; focusing the optical signals separated by different angles on a light switch device having a plurality of micromirrors; and controlling the light switch by a control signal to direct one or more of the optical signals separated by different angles to one or more output fibers for multicasting of the optical input signals.

US Patent:

20140294399, Oct 2, 2014

Filed:

Apr 2, 2013

Appl. No.:

13/855602

Inventors:

RAYTHEON COMPANY - , US
Gary D. Coleman - Redondo Beach CA, US
William J. Miniscalco - Sudbury MA, US
Stephen D. Nordel - Torrance CA, US

Assignee:

RAYTHEON COMPANY - Waltham MA

International Classification:

H04B 10/11
H04B 10/29

US Classification:

398126

Abstract:

A laser relay module for free space optical communications including an optical telescope for receiving and transmitting optical beams; an optical diplexer for separating transmitting and received optical beams; an optical amplifier; a modulated beacon laser for line of sight control of a plurality of communicating remote network nodes; a beacon beam detector for detecting an incoming beacon optical beam for line of sight control of the optical telescope and receiving data from other network nodes; and means for inserting an output of the modulated beacon laser into the optical telescope for transmission to another network node, and for transporting the incoming beacon optical beam to the beacon detector.