Patrick W Johnson

7479918, Jan 20, 2009

Nov 22, 2006

11/603241

Patrick W. Johnson - Jefferson MD, US
Bomono A. Emessiene - Germantown MD, US

Zimmerman Associates, Inc. - Fairfax VA

G01S 13/89

342 22, 342 27, 342 25 A, 342179, 89 113

Vehicle-mounted UWB systems and/or methods for detecting mines and other explosive devices are provided. In certain exemplary embodiments, a system for detecting non-buried mines and/or improvised explosive devices is provided. Distance measuring equipment may be configured to track movement of the system. Substantially forward-looking bistatic antenna transceivers may be capable of collecting range-magnitude radar data over two channels. A first transceiver may capture radar data for a first area, and a second transceiver may capture radar data for a second area. A processor may be configured to: derive range resolution data and cross-range resolution data from the range-magnitude radar data; focus the range resolution data and the cross-range resolution data, based at least on the distance data and an antenna beamwidth pattern associated with the antenna transceivers; and, “and” data for portions of the first area and the second area that overlap.

7924210, Apr 12, 2011

Jun 28, 2006

11/990505

Patrick W Johnson - Jefferson MD, US

Zimmerman Associates, Inc. - Fairfax VA

G01S 13/89

342 25A, 342 54, 342123, 342191

A system, method, and/or apparatus for remote measurement of terrestrial biomass contained in vegetative elements, such as large tree boles or trunks present in an area of interest, are provided. The method includes providing an airborne VHF radar system in combination with a LiDAR system, overflying the area of interest while directing energy toward the area of interest, using the VHF radar system to collect backscatter data from the trees as a function of incidence angle and frequency, and determining a magnitude of the biomass from the backscatter data and data from the laser radar system for each radar resolution cell. A biomass map is generated showing the magnitude of the biomass of the vegetative elements as a function of location on the map by using each resolution cell as a unique location thereon. In certain preferred embodiments, a single frequency is used with a linear array antenna.

58866620, Mar 23, 1999

Jun 18, 1997

8/878209

Patrick W. Johnson - College Park MD

ZAI AMELEX - Vienna VA

G01S 1390

342 25

Method and apparatus for remote measurement of terrestrial biomass contained in vegetative elements, such as large tree boles or trunks present in an area of interest. The method includes providing an airborne radar system, overflying the area of interest while directing radar energy having a frequency of under 400 MHz, and preferably between 80 and 120 MHz, toward the area of interest, using the radar system to collect backscatter data from the radar energy as a function of incidence angle and frequency, and using an inversion algorithm to determine a magnitude of the biomass from the backscatter data for each radar resolution cell. A biomass map is generated showing the magnitude of the biomass of the vegetative elements as a function of location on the map by using each resolution cell as a unique location thereon.

47838302, Nov 8, 1988

Mar 24, 1987

7/029670

Patrick Johnson - College Park MD
David W. Rose - Bowie MD

American Electronics, Inc. - Lanham MD

G06K 964

382 34

A pattern recognizing content addressable memory system and method therefor, according to the present invention, "translates" patterns into a point in N-dimensional space. In both the analog and digital embodiments of the invention, data representing "items" or "discrete pieces" of reference patterns are stored throughout a highly-interconnected network of processing units. Data representing items of a pattern to be analyzed are input into the system and compared to each of the stored patterns. The distance between the point in N-space representing an unknown pattern and the point representing a reference pattern is inversely proportional to the degree of similarity between the unknown pattern and the reference pattern.

20220316826, Oct 6, 2022

Apr 1, 2022

17/711504

- Taneytown MD, US
Patrick Stephen Johnson - Eldersburg MD, US

F28F 25/04
F28F 25/08
F28C 1/14
F24F 5/00

A water redistribution system for adiabatically pre-cooled dry coolers having stacked adiabatic panels, the water redistribution system located between upper and lower adiabatic panels and having a plurality of alternating baffles arranged to reduce water free-fall height and resultant splashing. Upwardly turned flanges at the top of each baffle inhibit the travel of water out of the interior water channel.