Patents by Inventor RYAN D. TURNER

RYAN D. TURNER has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10782396
    Abstract: Systems and methods are provided for tracking moving objects from a set of measurements. An estimate of a posterior probability distribution for a plurality of track states is determined from an estimate of the posterior probability distribution for a plurality of possible assignments of the set of measurements to a set of tracks representing trajectories of the plurality of moving objects and the set of measurements. A new estimate of the posterior probability distribution for the assignments is determined from the measurements and the estimate of a posterior probability distribution for the track states. A variational lower bound is determined from the new estimate of the posterior probability distribution for the assignments, the estimate of the posterior probability distribution for the track states, and the set of measurements. These steps are iteratively repeated until the variational lower bound is less than a threshold value.
    Type: Grant
    Filed: April 16, 2019
    Date of Patent: September 22, 2020
    Assignee: NORTHROP GRUMMAN SYSTEMS CORPORATION
    Inventors: Ryan D. Turner, Steven Bottone, Bhargav R. Avasarala, Clay J. Stanek
  • Publication number: 20190242988
    Abstract: Systems and methods are provided for tracking moving objects from a set of measurements. An estimate of a posterior probability distribution for a plurality of track states is determined from an estimate of the posterior probability distribution for a plurality of possible assignments of the set of measurements to a set of tracks representing trajectories of the plurality of moving objects and the set of measurements. A new estimate of the posterior probability distribution for the assignments is determined from the measurements and the estimate of a posterior probability distribution for the track states. A variational lower bound is determined from the new estimate of the posterior probability distribution for the assignments, the estimate of the posterior probability distribution for the track states, and the set of measurements. These steps are iteratively repeated until the variational lower bound is less than a threshold value.
    Type: Application
    Filed: April 16, 2019
    Publication date: August 8, 2019
    Applicant: NORTHROP GRUMMAN SYSTEMS CORPORATION
    Inventors: RYAN D. TURNER, STEVEN BOTTONE, BHARGAV R. AVASARALA, CLAY J. STANEK
  • Patent number: 10310068
    Abstract: Systems and methods are provided for tracking moving objects from a set of measurements. An estimate of a posterior probability distribution for a plurality of track states is determined from an estimate of the posterior probability distribution for a plurality of possible assignments of the set of measurements to a set of tracks representing trajectories of the plurality of moving objects and the set of measurements. A new estimate of the posterior probability distribution for the assignments is determined from the measurements and the estimate of a posterior probability distribution for the track states. A variational lower bound is determined from the new estimate of the posterior probability distribution for the assignments, the estimate of the posterior probability distribution for the track states, and the set of measurements. These steps are iteratively repeated until the variational lower bound is less than a threshold value.
    Type: Grant
    Filed: December 8, 2014
    Date of Patent: June 4, 2019
    Assignee: NORTHROP GRUMMAN SYSTEMS CORPORATION
    Inventors: Ryan D. Turner, Steven Bottone, Bhargav R. Avasarala, Clay J. Stanek
  • Patent number: 9823344
    Abstract: Systems and methods are provided for tracking moving objects. A sensor system is configured to measure a position of each of a plurality of moving objects as a set of measurements. A track assignment component is configured to accept the set of measurements from the sensor system and assign a subset of the measurements to respective tracks. The tracks represents the motion of respective objects. The track assignment component represents a cost calculation component configured to provide a cost matrix from at least a change point detection analysis of a feature associated with the set of measurements and an object assignment component configured to assign the subset of the measurements to respective tracks. A filtering component is configured to update respective associated states of tracks representing the plurality of moving objects according to the set of measurements and the assignment of the subset of the measurements to respective tracks.
    Type: Grant
    Filed: December 8, 2014
    Date of Patent: November 21, 2017
    Assignee: Northrop Grumman Systems Corporation
    Inventors: Ryan D. Turner, Steven Bottone, Clay J. Stanek
  • Publication number: 20160161606
    Abstract: Systems and methods are provided for tracking moving objects from a set of measurements. An estimate of a posterior probability distribution for a plurality of track states is determined from an estimate of the posterior probability distribution for a plurality of possible assignments of the set of measurements to a set of tracks representing trajectories of the plurality of moving objects and the set of measurements. A new estimate of the posterior probability distribution for the assignments is determined from the measurements and the estimate of a posterior probability distribution for the track states. A variational lower bound is determined from the new estimate of the posterior probability distribution for the assignments, the estimate of the posterior probability distribution for the track states, and the set of measurements. These steps are iteratively repeated until the variational lower bound is less than a threshold value.
    Type: Application
    Filed: December 8, 2014
    Publication date: June 9, 2016
    Applicant: NORTHROP GRUMMAN SYSTEMS CORPORATION
    Inventors: RYAN D. TURNER, STEVEN BOTTONE, BHARGAV R. AVASARAIA, CLAY J. STANEK
  • Publication number: 20160161607
    Abstract: Systems and methods are provided for tracking moving objects. A sensor system is configured to measure a position of each of a plurality of moving objects as a set of measurements. A track assignment component is configured to accept the set of measurements from the sensor system and assign a subset of the measurements to respective tracks. The tracks represents the motion of respective objects. The track assignment component represents a cost calculation component configured to provide a cost matrix from at least a change point detection analysis of a feature associated with the set of measurements and an object assignment component configured to assign the subset of the measurements to respective tracks. A filtering component is configured to update respective associated states of tracks representing the plurality of moving objects according to the set of measurements and the assignment of the subset of the measurements to respective tracks.
    Type: Application
    Filed: December 8, 2014
    Publication date: June 9, 2016
    Applicant: NORTHROP GRUMMAN SYSTEMS CORPORATION
    Inventors: RYAN D. TURNER, STEVEN BOTTONE, CLAY J. STANEK