Richard Keith Collier

US Patent:

6683569, Jan 27, 2004

Filed:

Jan 22, 2002

Appl. No.:

10/054770

Inventors:

Richard Collier - Lawrenceville GA
Howard Carnes - Suwanee GA

Assignee:

Electronic System Products, Inc. - Duluth GA

International Classification:

G01S 302

US Classification:

342465, 455 65

Abstract:

The present invention is a method of determining the time of arrival of an incident signal transmitted utilizing a code word that is interspersed with noise and diffracted and reflected signals of the incident signal. The incident, diffracted and reflected signals and noise are collectively defined as a combined signal. The method comprises receiving the combined signal; obtaining the code word to apply to the combined signal; comparing the combined signal with the code word to filter the incident signal and diffracted and reflected signals arising from the incident signal from the combined signal; utilizing the incident signal and related diffracted and reflected signals to determine a first parameter indicative of the incident signals time of arrival; and filtering the first parameter utilizing a multipath mitigation algorithm to mitigate the influence of the diffracted and reflected signals to obtain a second parameter indicative of the incident signals time of arrival.

US Patent:

20020082122, Jun 27, 2002

Filed:

Jan 22, 1999

Appl. No.:

09/235233

Inventors:

JOHN FESTUS PIPPIN - ALPHARETTA GA, US
MICHAEL V. MOORE - DULUTH GA, US
RICHARD DAVIS COLLIER - LAWRENCEVILLE GA, US
MARK BURTON HUSTED - AUBURN GA, US
MARK DENNIS ROGERS - LAWRENCEVILLE GA, US
MICHAEL RAY PUGH - NORCROSS GA, US

International Classification:

A63B057/00

US Classification:

473/407000

Abstract:

The present invention provides a system for updating mobile distance determination units on a golf course that includes a first mobile unit that determines a new location for a point-of-interest defined for a golf course. The first mobile unit wirelessly transmits update data to identify the new location to a base station computer. The base station computer processes the updated data for broadcasting to activated second mobile distance determination units. The base station computer then wirelessly broadcasts the updated data from the base station computer to the second mobile distance determination units. The second mobile distance determination units update their point-of-interest location data and use this updated data to determine distances between the second mobile distance determination units and the new locations. The mobile distance determination units may operate in a golfer mode to provide distance measurements to golfers, may operate in the greenskeeper mode to update the pin positions, or may operate in a surveyor mode to define new points of interests and their locations on the golf course.