David Alan Kirk

US Patent:

6365214, Apr 2, 2002

Filed:

Mar 3, 2000

Appl. No.:

09/518618

Inventors:

David E. Kirk - San Diego CA 92111

International Classification:

A23D 902

US Classification:

4263306, 426417, 426422, 426424, 426438, 2105021, 210503, 210509, 210238, 210470, 210471

Abstract:

An apparatus for absorbing, containing, immobilizing, transporting and disposing of quantities of used cooking oil and/or other oils and hydrocarbons, comprising decomposed organic matter and/or inorganic matter.

US Patent:

6724340, Apr 20, 2004

Filed:

Feb 13, 2003

Appl. No.:

10/367025

Inventors:

John Don Carlos - San Diego CA
David R. Kirk - Springfield VA
Jameson Bergin - Nashua NH
Paul M. Techau - Falls Church VA
J. Doss Halsey - Falls Church VA

Assignee:

Information Systems Laboratories - San Diego CA

International Classification:

G01S 1300

US Classification:

342 22, 342146, 342465

Abstract:

A system and method for detecting a target object through foliage includes a transmitter for generating a low-frequency electromagnetic signal. The signal is directed toward a potential target object for reflection from the potential target object. The system further includes a plurality of mutually dispersed sensors for receiving the reflected signal from the target object. A mechanism is provided to determine the relative locations of the sensors. Signal information from the received signals is sent to a central processor. The central processor inputs the signal information into a beamformer algorithm such as the Maximum Likelihood Method (MLM) to reduce sidelobe ambiguities and resolve the true location of the target from the signal information.

US Patent:

20200166608, May 28, 2020

Filed:

Nov 27, 2018

Appl. No.:

16/201677

Inventors:

- San Diego CA, US
Joseph R. Guerci - La Jolla CA, US
David R. Kirk - Springfield VA, US

International Classification:

G01S 7/40
G01S 7/41
G01S 19/23

Abstract:

The present invention is for a system and method for testing an RF/radar system in a simulated open-air environment. During a test, the RF/radar system-under-test interfaces directly with the simulated open-air environment and operates in real time. For test purposes, an environmental database is provided to mimic the simulated open-air environment using a plurality of digitized impulse functions. A computation engine then cross-correlates the digitized impulse functions of the environmental database in fast time with digitized RF transmissions from the system-under-test to format a digital convolution. The digital convolution is then test-evaluated. For the present invention, the digital convolution is based on the theory of Green's Functions and is influenced by propagation and reflection physics (i.e. Maxwell's Equations) that are pertinent to the simulated open-air environment.