Alexander D Reid

US Patent:

6567087, May 20, 2003

Filed:

Mar 27, 2000

Appl. No.:

09/537165

Inventors:

Alexander A. Reid - Washington MI

Assignee:

The United States of America as represented by the Secretary of the Army - Washington DC

International Classification:

G06T 1700

US Classification:

345428, 345619, 703 2

Abstract:

A new method of creating a realistic simulated terrain database results in a database that requires less computer memory for storage than prior simulated terrain databases. The new method generates a simulated surface that provides realistic disturbances to a real-time mathematical model of a vehicle traversing the simulated surface. The simulated surface is also output visually. The method uses fractal Brownian motion to create the high-resolution terrain database in the frequency domain, and then the database is transformed to the spatial domain using a two-dimensional inverse Fast Fourier Transform. Then control points describing a NURBS surface are extracted from the transformed database, and thereafter geometric G continuity is created between surface patches represented by the NURBS control points. The surface patches form a high-resolution surface superimposed on a lower resolution surface produced by the image generator to create a hybrid, high-resolution simulated terrain. The hybrid simulated terrain interacts with the vehicle model to provide a realistic experience to a human driver navigating the vehicle model over the terrain.

US Patent:

50094335, Apr 23, 1991

Filed:

Dec 1, 1989

Appl. No.:

7/444674

Inventors:

Alexander D. Reid - Lake Orion MI

International Classification:

A63B 6502

US Classification:

273419

Abstract:

Disclosed is a dart for aiming at a game board comprising a body portion having a tail portion and spaced therefrom a point portion, the point portion being movable on a line with the horizontal longitudinal axis of the body portion and on a line with the vertical axis of the body so that the point can stick to the board and avoid obstructions on the board. Also described is a dart wherein the body of the dart has a cavity containing a movable ballast capable of moving from the tail portion to the point portion for assisting the adherence of the dart to the game board.

US Patent:

20190033077, Jan 31, 2019

Filed:

Jul 28, 2017

Appl. No.:

15/662739

Inventors:

- Auburn Hills MI, US
Alexander John Reid - Wixom MI, US

International Classification:

G01C 21/16
G08G 1/01
G01S 19/47
G01S 19/07
H04L 29/08

Abstract:

A high precision vehicle localization system, including a GPS Unit configured to receive GPS signals from a GPS satellite for determining a GPS location of the vehicle, an inertial measuring unit (IMU) configured to collect vehicle inertial information, an electronic communication module configured to receive GPS correction data wirelessly from a remote source, and a controller in communication with the GPS Unit to receive the GPS signals, the IMU to receive the vehicle inertial information, and the electronic communication module to receive the GPS correction data. One of the GPS Unit and controller is configured to process the GPS signal to determine the GPS location of the vehicle. The controller is configured to fuse the GPS location of the vehicle, the inertial information, and the GPS correction data such that the accuracy or precision of the GPS location of the vehicle is increased.