GEOFFREY LAYTON MAIN
Pilots at Joy Ln, Vienna, VA
License number
Virginia A2166288
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
10111 Joy Ln, Vienna, VA 22181
Professional information
Direct Intermediate Frequency Sampling Wavelet-Based Analog-To-Digital And Digital-To-Analog Converter
US Patent:
2002015, Oct 17, 2002
Filed:
Mar 2, 2001
Appl. No.:
09/796493
Inventors:
Geoffrey Main - Vienna VA, US
International Classification:
G10L021/00
US Classification:
704/500000
Abstract:
A direct intermediate frequency sampling analog-to-digital and digital-to-analog converter comprised of (1) a bank of precision analog wavelet generator circuits, (2) synchronization circuits and calibration circuits, and (3) digital measurement circuits. In combination these circuits provide high dynamic range and high sample rate direct intermediate frequency sampling conversion between the discrete-time and continuous-time domains.
Wireless-Based System And Method For Hull-Based Sensing
US Patent:
6972678, Dec 6, 2005
Filed:
Aug 1, 2002
Appl. No.:
10/208840
Inventors:
Brian H. Houston - Fairfax VA, US
Geoffrey L. Main - Vienna VA, US
Geoffrey L. Main - Vienna VA, US
Assignee:
The United States of America as represented by the Secretary of the Navy - Washington DC
International Classification:
H04Q007/00
US Classification:
3405391, 3408546, 3405392, 340851, 367 87, 324323
Abstract:
The present invention describes a wireless system and method for distributing sensors in large numbers that makes possible the application of a number of algorithms for the extraction of important physical quantities. More specifically, the method involves (a) formation of an electromagnetic waveguide by the application of a polymer, or other dielectric material, on the exterior of the hull of a vessel; (b) insertion of sensors/radio units within the waveguide, the sensors being arranged to sample the fields of interest; and (c) insertion of radio transceiver base stations in the waveguide to communicate and extract data from the sensor/radio units. The wireless system of the present invention is implemented with a very high sensor count whose outputs are processed to recover exterior field quantities without the requirement of direct measurements off of the vessel's structure.
Wireless-Based System And Method For Hull-Based Sensing
US Patent:
2005000, Jan 6, 2005
Filed:
Jun 23, 2004
Appl. No.:
10/895806
Inventors:
Brian Houston - Fairfax VA, US
Geoffrey Main - Vienna VA, US
Geoffrey Main - Vienna VA, US
International Classification:
G08B001/08
US Classification:
340539220
Abstract:
The present invention describes a wireless system and method for distributing sensors in large numbers that makes possible the application of a number of algorithms for the extraction of important physical quantities. More specifically, the method involves (a) formation of an electromagnetic waveguide by the application of a polymer, or other dielectric material, on the exterior of the hull of a vessel; (b) insertion of sensors/radio units within the waveguide, the sensors being arranged to sample the fields of interest; and (c) insertion of radio transceiver base stations in the waveguide to communicate and extract data from the sensor/radio units. The wireless system of the present invention is implemented with a very high sensor count whose outputs are processed to recover exterior field quantities without the requirement of direct measurements off of the vessel's structure.