Patents by Inventor Aled Catherall

Aled Catherall 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).

  • Method and apparatus for position estimation
    Patent number: 11573335
    Abstract: A method and apparatus for improving a dead reckoning estimate of a mobile unit is described. When an accurate position cannot be determined for a mobile unit, for example if GPS is unavailable, a dead reckoning estimate can be improved when two or more mobile units share their position estimates and the shared position estimates are used with either the range between the two units or knowledge that the units are within a threshold distance of each other to refine the position estimate of at least one unit.
    Type: Grant
    Filed: February 6, 2020
    Date of Patent: February 7, 2023
    Assignee: RAYTHEON SYSTEMS LIMITED
    Inventor: Aled Catherall
  • METHOD AND APPARATUS FOR POSITION ESTIMATION
    Publication number: 20200173782
    Abstract: A method and apparatus for improving a dead reckoning estimate of a mobile unit is described. When an accurate position cannot be determined for a mobile unit, for example if GPS is unavailable, a dead reckoning estimate can be improved when two or more mobile units share their position estimates and the shared position estimates are used with either the range between the two units or knowledge that the units are within a threshold distance of each other to refine the position estimate of at least one unit.
    Type: Application
    Filed: February 6, 2020
    Publication date: June 4, 2020
    Applicant: Raytheon Systems Limited
    Inventor: Aled Catherall
  • Method and apparatus for position estimation
    Patent number: 10598494
    Abstract: A method and apparatus for improving a dead reckoning estimate of a mobile unit is described. When an accurate position cannot be determined for a mobile unit, for example if GPS is unavailable, a dead reckoning estimate can be improved when two or more mobile units share their position estimates and the shared position estimates are used with either the range between the two units or knowledge that the units are within a threshold distance of each other to refine the position estimate of at least one unit.
    Type: Grant
    Filed: August 24, 2017
    Date of Patent: March 24, 2020
    Assignee: Raytheon Systems Limited
    Inventor: Aled Catherall
  • Method And Apparatus For Position Estimation
    Publication number: 20180058856
    Abstract: A method and apparatus for improving a dead reckoning estimate of a mobile unit is described. When an accurate position cannot be determined for a mobile unit, for example if GPS is unavailable, a dead reckoning estimate can be improved when two or more mobile units share their position estimates and the shared position estimates are used with either the range between the two units or knowledge that the units are within a threshold distance of each other to refine the position estimate of at least one unit.
    Type: Application
    Filed: August 24, 2017
    Publication date: March 1, 2018
    Applicant: Raytheon Systems Limited
    Inventor: Aled Catherall