Geoffrey L Main

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

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.

US Patent:

20020152084, 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.

US Patent:

20050001721, Jan 6, 2005

Filed:

Jun 23, 2004

Appl. No.:

10/895806

Inventors:

Brian Houston - Fairfax 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.