Christopher A Coyle

US Patent:

59267801, Jul 20, 1999

Filed:

Oct 9, 1997

Appl. No.:

8/947887

Inventors:

Tweed Fox - San Diego CA
Christopher W. Coyle - Valley Center CA

International Classification:

A63B 6900

US Classification:

702142

Abstract:

A system 20 for measuring the initial velocity vector of a ball 500 includes a first light sensing array 24, a first light source 28, a second light sensing array 30, and a second light source 32. The ball 500 has an initial position 22. When the ball 500 is struck, at time T1 it casts a first shadow position 36 on first light sensing array 24, and at time T2 it casts a second shadow position 42 on second light sensing array 30. A first plane 38 is formed by initial position 22, first light source 28, and first shadow position 36. A second plane 44 is formed by initial position 22, second light source 32, and second shadow position 42. The line of flight 37 of ball 500 is defined by the intersection of planes 38 and 44. A slant distance D. sub. s is determined, whereby the speed S. sub.

US Patent:

56045824, Feb 18, 1997

Filed:

Feb 27, 1995

Appl. No.:

8/395515

Inventors:

Donald C. Rhoads - Falmouth MA
Christopher Coyle - San Diego CA
Roger Ward - Portmouth RI
Gregory Mooradian - Del Mar CA
Richard Anderson - San Diego CA

Assignee:

Science Application International Corporation - San Diego CA

International Classification:

G01N 2127
G01N 2164

US Classification:

356 73

Abstract:

A spectrometer system includes a processing center, an underwater remote sensor and a communication link coupled therebetween. The sensor is deployed to at least partially penetrate a sediment layer disposed beneath a body of water. The sensor includes a window defining a sediment window plane through which a profile of the sediment layer is observable and a camera, an image plane of which is a conjugate of the window, the camera imaging light from objects in the sediment window plane to generate imagewise data, the imagewise data being transmitted over the communications link to the processing center. The sensor also includes at least one removable cell disposed in the sediment window plane, each removable cell being comprised of a transparent solid material having a void therein, the void in each removable cell for holding a standard material corresponding to the respective removable cell. The sensor further includes a camera filter device having at least one camera filter. Each camera filter is characterized as passing radiant energy within a corresponding emission band of camera wavelengths, the camera filter device being controllable to select a current camera filter.