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Gary G Churan

from Annandale, VA
Age ~73
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Related to:
Nathan Roy Churan, 39John B Churan, 36Roxanne Rose ChuranVostok Bernal, 62Raymond Romero, 64Candice Romero
Connected to:
Karlee L Churan, 38Lauren N Churan, 37Marc A Churan, 78Christopher P Churas, 47John J Churas, 113Bogna Churawski, 64Leah A Churay, 35Joseph J Churbock, 69Abigail A Church, 51Alexis W Church, 38

Gary Churan Phones & Addresses

  • 4320 Starr Jordan Dr, Annandale, VA 22003 (703) 978-4239
  • Gainesville, VA
  • Arlington, VA
  • Springfield, VA
  • Prince William, VA

Work

Company: Ligado networks Jun 1991 to Feb 2019 Position: Director, systems analysis and optimization

Education

Degree: Master of Science, Masters School / High School: The George Washington University 2012 to 2013

Skills

Telecommunications • Wireless • Mobile Devices • Lte • 4G • Cdma • Satellite Communications • Radio Frequency • Rf • Systems Engineering • Start Ups • Program Management • Integration

Industries

Wireless

Resumes

Resumes

Gary Churan Photo 1

Gary Churan

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Location:
6675 Amberton Dr, Elkridge, MD 21075
Industry:
Wireless
Work:
Ligado Networks Jun 1991 - Feb 2019
Director, Systems Analysis and Optimization
Education:
The George Washington University 2012 - 2013
Master of Science, Masters The George Washington University 1976 - 1978
Master of Science, Masters, Electrical Engineering, Communications
Skills:
Telecommunications
Wireless
Mobile Devices
Lte
4G
Cdma
Satellite Communications
Radio Frequency
Rf
Systems Engineering
Start Ups
Program Management
Integration

Business Records

Name / Title
Company / Classification
Phones & Addresses
Gary Churan
Director Of System Analysis
Skyterra Communications, Inc.
10802 Parkridge Blvd, Reston, VA 20191
(703) 390-1899, (703) 390-2700

Publications

Us Patents

Systems And Methods For Monitoring Terrestrially Reused Satellite Frequencies To Reduce Potential Interference

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US Patent:
7039400, May 2, 2006
Filed:
May 28, 2002
Appl. No.:
10/156363
Inventors:
Peter D. Karabinis - Cary NC, US
Gary G. Churan - Annandale VA, US
Assignee:
ATC Technologies, LLC - Reston VA
International Classification:
H04Q 7/20
US Classification:
455427, 455522, 455524, 455 121, 455 131, 455 631, 4554221, 455 69, 455410, 455428, 370320, 725 63, 725 67
Abstract:
Radiation by an ancillary terrestrial network, and/or satellite radiotelephones that communicate therewith are monitored and controlled, to reduce and preferably prevent intra-system interference and/or interference with other satellite radiotelephone systems. In particular, a satellite radiotelephone system includes a space-based component that is configured to wirelessly communicate with first radiotelephones in a satellite footprint over a satellite radiotelephone frequency band, and an ancillary terrestrial network that is configured to wirelessly communicate with second radiotelephones in the satellite footprint over at least some of the satellite radiotelephone frequency band, to thereby terrestrially reuse the at least some of the satellite radiotelephone frequency band. Wireless radiation by the ancillary terrestrial network and/or the second radiotelephones at the space-based component is monitored, and the radiation by the ancillary terrestrial network and/or the plurality of second radiotelephones is adjusted in response to the monitoring. Intra-system interference and/or interference with other satellite systems thereby may be reduced or prevented.

Network-Assisted Global Positioning Systems, Methods And Terminals Including Doppler Shift And Code Phase Estimates

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US Patent:
7155340, Dec 26, 2006
Filed:
Jan 5, 2004
Appl. No.:
10/751715
Inventors:
Gary G. Churan - Annandale VA, US
Assignee:
ATC Technologies, LLC - Reston VA
International Classification:
G01S 5/10
H04B 7/185
US Classification:
701213, 34235701, 455 121
Abstract:
A mobile terminal is configured to receive wireless communications including GPS data from a terrestrial and/or satellite wireless network, and to perform pseudo-range measurements using the GPS data that is received. The mobile terminal may be configured to perform pseudo-range measurements by receiving GPS coarse/acquisition (C/A) signals from GPS satellites, estimating Doppler shifts in the received GPS C/A signals, and estimating received code phases of the GPS C/A signals using the Doppler shifts that are estimated. The estimated code phases and/or the estimated Doppler shifts of the GPS C/A signals can provide the pseudo-range measurements. By removing the Doppler shift from the received signal samples prior to performing the code phase measurement, reduced computational complexity and/or processing time may be obtained.

Intra- And/Or Inter-System Interference Reducing Systems And Methods For Satellite Communications Systems

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US Patent:
7340213, Mar 4, 2008
Filed:
Jul 14, 2004
Appl. No.:
10/890758
Inventors:
Peter D. Karabinis - Cary NC, US
Santanu Dutta - Cary NC, US
Gary G. Churan - Annandale VA, US
Dunmin Zheng - Vienna VA, US
Assignee:
ATC Technologies, LLC - Reston VA
International Classification:
H04B 7/185
US Classification:
455 121, 455 131, 455 132
Abstract:
A first radio signal is received via a first satellite reception path, for example, an antenna or spot beam, which serves a satellite cell. The received first radio signal includes a desired satellite uplink signal transmitted from a first source using a frequency assigned to the satellite cell and an interfering signal transmitted from at least one second source using the frequency assigned to the satellite cell. A second radio signal is received via a second satellite reception path, for example, via another antenna or spot beam of the system and/or via a satellite antenna beam of another system. The second radio signal includes a measure of the interfering signal. The first and second radio signals are processed to recover the desired satellite uplink signal.

Network-Assisted Global Positioning Systems, Methods And Terminals Including Doppler Shift And Code Phase Estimates

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US Patent:
7421342, Sep 2, 2008
Filed:
Nov 14, 2006
Appl. No.:
11/559560
Inventors:
Gary G. Churan - Annandale VA, US
Assignee:
ATC Technologies, LLC - Reston VA
International Classification:
G01S 5/10
US Classification:
701213, 34235701
Abstract:
A mobile terminal is configured to receive wireless communications including GPS data from a terrestrial and/or satellite wireless network, and to perform pseudo-range measurements using the GPS data that is received. The mobile terminal may be configured to perform pseudo-range measurements by receiving GPS coarse/acquisition (C/A) signals from GPS satellites, estimating Doppler shifts in the received GPS C/A signals, and estimating received code phases of the GPS C/A signals using the Doppler shifts that are estimated. The estimated code phases and/or the estimated Doppler shifts of the GPS C/A signals can provide the pseudo-range measurements. By removing the Doppler shift from the received signal samples prior to performing the code phase measurement, reduced computational complexity and/or processing time may be obtained.

Code Synchronization In Cdma Satellite Wireless Communications System Using Uplink Channel Detection

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US Patent:
7453920, Nov 18, 2008
Filed:
Feb 25, 2005
Appl. No.:
11/067006
Inventors:
Gary G. Churan - Annandale VA, US
Assignee:
ATC Technologies, LLC - Reston VA
International Classification:
H04L 27/30
US Classification:
375142, 375145, 375149, 375367, 370515
Abstract:
An uplink signal transmitted by a terminal is received by a satellite wireless communications system. The uplink signal includes a known information element, e. g. , a reverse access channel (R-ACH) preamble, spread according to a spreading code specific to a component of a satellite wireless communications system, e. g. , a pseudonoise (PN) sequence associated with a satellite beam. A correlation of the received uplink signal with the spreading code over a range of time shifts is determined. The known information element is detected from the determined correlation. The satellite wireless communications system is synchronized with the terminal responsive to detection of the known information element. For example, a delay may be assigned to a receiver of the satellite wireless communications system responsive to detection of the known information element.

Systems And Methods For Terrestrial Reuse Of Cellular Satellite Frequency Spectrum In A Time-Division Duplex And/Or Frequency-Division Duplex Mode

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US Patent:
7664460, Feb 16, 2010
Filed:
Dec 23, 2004
Appl. No.:
11/021077
Inventors:
Peter D. Karabinis - Cary NC, US
Gary G. Churan - Annandale VA, US
Assignee:
ATC Technologies, LLC - Reston VA
International Classification:
H04B 7/185
H04W 4/00
US Classification:
455 121, 455427, 455430
Abstract:
A space-based component, such as a satellite, is configured to receive wireless communications from radiotelephones in a satellite footprint over an uplink satellite radiotelephone frequency, and to transmit wireless communications to the radiotelephones over a downlink radiotelephone frequency. An ancillary terrestrial network, that may include one or more ancillary terrestrial components, is configured to transmit wireless communications to, and receive wireless communications from, the radiotelephones over the uplink satellite radiotelephone frequency in a time-division duplex mode. An interference reducer is configured to reduce interference from the wireless communications that are received by the space-based component from the second radiotelephone and/or from the ancillary terrestrial network over the uplink satellite radiotelephone frequency, using the wireless communications that are transmitted by the ancillary terrestrial to, and/or received by the ancillary terrestrial network from, the second radiotelephone over the uplink satellite radiotelephone frequency.

Methods, Apparatus And Computer Program Products For Joint Decoding Of Access Probes In A Cdma Communications System

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US Patent:
7907944, Mar 15, 2011
Filed:
Jun 29, 2006
Appl. No.:
11/427576
Inventors:
Gary G. Churan - Annandale VA, US
Assignee:
ATC Technologies, LLC - Reston VA
International Classification:
H04W 4/00
US Classification:
455427, 455428, 455429, 455430, 455436
Abstract:
A signal is received at a component of the wireless CDMA communications system, such as a base station or satellite gateway. A plurality of data sets is generated from the received signal, respective ones of the plurality of data sets corresponding to respective access probes received, for example, over the reverse access channel (R-ACH) or reverse enhanced access channel (R-EACH). At least some of the plurality of data sets are jointly decoded to recover an access probe payload.

Systems And Methods For Terrestrial Reuse Of Cellular Satellite Frequency Spectrum In A Time-Division Duplex And/Or Frequency-Division Duplex Mode

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US Patent:
8078101, Dec 13, 2011
Filed:
Oct 23, 2009
Appl. No.:
12/604994
Inventors:
Peter D. Karabinis - Cary NC, US
Gary G. Churan - Annandale VA, US
Assignee:
ATC Technologies, LLC - Reston VA
International Classification:
H04B 7/185
H04W 4/00
US Classification:
455 121, 455427, 455430
Abstract:
A space-based component, such as a satellite, is configured to receive wireless communications from radiotelephones in a satellite footprint over an uplink satellite radiotelephone frequency, and to transmit wireless communications to the radiotelephones over a downlink radiotelephone frequency. An ancillary terrestrial network, that may include one or more ancillary terrestrial components, is configured to transmit wireless communications to, and receive wireless communications from, the radiotelephones over the uplink satellite radiotelephone frequency in a time-division duplex mode. An interference reducer is configured to reduce interference from the wireless communications that are received by the space-based component from the second radiotelephone and/or from the ancillary terrestrial network over the uplink satellite radiotelephone frequency, using the wireless communications that are transmitted by the ancillary terrestrial to, and/or received by the ancillary terrestrial network from, the second radiotelephone over the uplink satellite radiotelephone frequency.
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Gary G Churan from Annandale, VA, age ~73 Get Report