Jonathan B Hammer

US Patent:

6718236, Apr 6, 2004

Filed:

Apr 29, 2003

Appl. No.:

10/424917

Inventors:

Jonathan Hammer - Sterling VA
Ganghuai Wang - Fairfax VA

Assignee:

The Mitre Corporation - McLean VA

International Classification:

G06F 700

US Classification:

701 3, 701 16, 701 18, 701301, 342 36

Abstract:

A method for coordinating numerous vehicles within a common maneuver is characterized by receiving, at a moving vehicle, state and projected maneuver information of other vehicles participating in the maneuver via a broadcast link and utilizing the information to control the trajectory of the moving vehicle based on predicted paths of all participating vehicles for future times for which the maneuver is to be conducted. For simple maneuvers, such as flight-deck based self-spacing of aircraft in a runway approach, the method allows each participating vehicle to virtually perform the coordinated maneuver by predictive simulation using current state data to determine if corrective measures need be undertaken, or, if the predicted maneuver shows that it would complete as planned, maintaining its current trajectory. This affords vehicle operators the freedom to perform other duties, as the operators are alerted only when a change in state is necessitated. In the runway approach problem, the state changes are primarily in a change of speed and the choice of a simple, stepped speed profile reduces the amount of speed control that must be attended to by aircraft flight crews, allows for fuel efficient flight profiles within constraints of solving the spacing problem, and allows for higher runway throughput as compared with the prior art.

US Patent:

51383217, Aug 11, 1992

Filed:

Oct 15, 1991

Appl. No.:

7/776963

Inventors:

Jonathan B. Hammer - Rockville MD

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G01S 1391

US Classification:

342 36

Abstract:

A technique is disclosed for multiple sensor tracking which distributes data association and filtering processing among multiple processing entities but coordinates the track estimates such that track states and covariances represent the equivalent of a centralized estimate. The object of the invention is to establish and maintain a single system track for a single aircraft in a distributed processing environment. This is achieved through communication of track information among processing entities which process a single sensor's inputs. Continued updating and re-broadcasting of process data are performed between the multiple sensor's processing entities.

US Patent:

50746731, Dec 24, 1991

Filed:

Aug 1, 1984

Appl. No.:

6/636528

Inventors:

Peggy J. Sowell - Marriottsville MD
William H. Renwick - Arnold MD
Jonathan B. Hammer - Laurel MD
Dale R. Logan - Bowie MD

Assignee:

Westinghouse Electric Corp. - Pittsburgh PA

International Classification:

G01C 308
G06K 946

US Classification:

356 5

Abstract:

A laser-based target discriminator system for discriminating desired objects from other objects and clutter in an image scene is disclosed. The system is operative to scan a pulsed laser beam a plurality of times across an image area, the scans covering different juxtaposed strip portions of the image area. Range differential signals are derived from the sensed information of successive laser pulsed echoes of each scan corresponding to the image elements thereof. From the range differential signalling, a binary image map of the image area is generated and converted into a second topological image map having index codes which are derived from predetermined groupings of the binary values of the first image map. Clusters of contiguous image elements are identified from the second image map based on the derived codes of the indices thereof. Desired clusters may be discriminated from the identified clusters based on measured predefined parameters thereof.

US Patent:

55660746, Oct 15, 1996

Filed:

Aug 7, 1995

Appl. No.:

8/512011

Inventors:

Jonathan B. Hammer - Sterling VA

Assignee:

The Mitre Corporation - Bedford MA

International Classification:

G06F16500

US Classification:

364461

Abstract:

A horizontal miss distance filter system (220) is provided for inhibiting resolution alert messages from an air traffic alert and collision avoidance system (210) to a pilot's display (230). The horizontal miss distance filter employs a parabolic range tracker (10) to derive a range acceleration estimate (11) utilized to discriminate intruder aircraft (110) having non-zero horizontal miss distances. The horizontal miss distance calculated from the range data provided by the parabolic range tracker is compared with a bearing based horizontal miss distance provided by a bearing based tracker (22). The smaller of the two calculated horizontal miss distances defines a projected horizontal miss distance which is compared with a threshold value. Any resolution alert for intruder aircraft whose projected horizontal miss distance is greater than the threshold will be inhibited unless it is determined that the encounter involves a maneuver of one of the aircraft. As many as five maneuver detectors (50, 52, 56, 58 and 64) may be employed to assess whether the encounter involves a maneuver.

Address:

1939 Lakeport Way, Reston, VA 20191

VIN:

4T1BE46K87U115406

Make:

TOYO

Model:

CAMR

Year:

2007

Author:

Jonathan Hammer

ISBN #:

0300083734