Jason B Clark

US Patent:

7532127, May 12, 2009

Filed:

Oct 20, 2005

Appl. No.:

11/253811

Inventors:

Glen A. Holman - Orlando FL, US
Herbert Duvoisin - Orlando FL, US
Gregory W. Stilwell - Orlando FL, US
Jason A. Clark - Orlando FL, US
Tim L. Davis - Winter Park FL, US
C. Andrew Helm - Oviedo FL, US

Assignee:

L-3 Communications CyTerra Corporation - Orlando FL

International Classification:

G08B 21/00

US Classification:

3406861, 340551, 340561, 3406916, 324233, 324329

Abstract:

A hand-held, wand-type buried object detector includes a motion and position sensor that provides data about the sensor head of the buried object detector. An inertial measuring device including three accelerometers and three gyroscopes is one example of a motion and position sensor. The buried object detector includes a processor/communicator device that is capable of processing the data from the motion and position sensor and communicating feedback, based on the processing results, to the operator about the operation of the buried object detector. In one example, a personal digital assistant may be configured for use as a processor/communicator device of a buried object detector.

US Patent:

20120029855, Feb 2, 2012

Filed:

Jul 26, 2011

Appl. No.:

13/190946

Inventors:

JASON A. CLARK - Orlando FL, US
James McNeill - Orlando FL, US

International Classification:

G01R 33/00
G06F 19/00

US Classification:

702 66, 324260

Abstract:

A detection apparatus includes a transmitter to generate a detection signal, and a coil assembly including a transmit coil and a receive coil. The transmit coil transmits the detection signal toward an object to be detected, with the object to be detected emitting a target signal in response to the transmitted detection signal. The receive coil receives the target signal emitted from the object along with an undesired coupling signal from the transmit coil. A matching network is coupled to the transmitter and generates an adjusted detection signal by adjusting a profile of the detection signal to match a profile of the undesired coupling signal. An output stage has a first input coupled to the receive coil to receive the target signal and the undesired coupling signal, and a second input coupled to the matching network to receive the adjusted transmit signal. The output stage subtracts the adjusted detection signal from the target signal and the undesired coupling signal so that the target signal remains.