Patents by Inventor Donald L. Hoagland

Donald L. Hoagland 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).

  • Low elevation angle radar tracking system
    Patent number: 4041487
    Abstract: A radar set for providing accurate low elevation angle tracking of targets by means of controlling the magnitudes of radar detection level which are sequentially switched so that either of a pair of beams is greater in magnitude than is used for two beam tracking.
    Type: Grant
    Filed: February 3, 1976
    Date of Patent: August 9, 1977
    Assignee: Hughes Aircraft Company
    Inventors: Norol T. Evans, Barry S. Pearlstein, Merlin A. Job, Donald L. Hoagland