Patents by Inventor Frederic C. Stevens, IV

Frederic C. Stevens, IV 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).

  • Sequential multi-beam radar for maximum likelihood tracking and fence search
    Patent number: 9891310
    Abstract: A radar system uses multiple-beam maximum likelihood estimation (MLE) during both search and tracking operations. During search, a four beam sequential beam cluster may be used to search for targets in a region-of-interest. During tracking, a three beam triad may be used to track one or more detected targets. In some embodiments, a beam selector switch may be used to allow two offset receive beams to time share a beamformer output port to generate the four beam sequential cluster.
    Type: Grant
    Filed: April 2, 2015
    Date of Patent: February 13, 2018
    Assignee: Raytheon Company
    Inventors: Kaichiang Chang, Yong Liu, David R. Schmidt, Stephen M. Sparagna, Frederic C. Stevens, IV
  • SEQUENTIAL MULTI-BEAM RADAR FOR MAXIMUM LIKELIHOOD TRACKING AND FENCE SEARCH
    Publication number: 20160291144
    Abstract: A radar system uses multiple-beam maximum likelihood estimation (MLE) during both search and tracking operations. During search, a four beam sequential beam, cluster may be used to search for targets in a region-of-interest. During tracking, a three beam triad may be used to track one or more detected targets. In some embodiments, a beam selector switch may be used to allow two offset receive beams to time share a beamformer output port to generate the four beam sequential cluster.
    Type: Application
    Filed: April 2, 2015
    Publication date: October 6, 2016
    Applicant: RAYTHEON COMPANY
    Inventors: Kaichiang Chang, Yong Liu, David R. Schmidt, Stephen M. Sparagna, Frederic C. Stevens, IV