Patents by Inventor Henry H. Davis

Henry H. Davis 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).

  • Acoustic wide area air surveillance system
    Patent number: 7872948
    Abstract: A method and apparatus for detecting an aircraft. The method is provided for wide area tracking of aircraft. An acoustic emission of the aircraft is detected from a plurality of locations. A position of the aircraft at a set of times is estimated by comparing a set of harmonically related Doppler shifted frequencies for the acoustic emission to an expected zero Doppler shifted frequency of the aircraft to form an estimated position. The position of the aircraft and a heading of the aircraft are tracked using the estimated position. The aircraft type is classified based on the corresponding set of zero Doppler frequencies at each acoustic sensor.
    Type: Grant
    Filed: April 14, 2008
    Date of Patent: January 18, 2011
    Assignee: The Boeing Company
    Inventors: Henry H. Davis, Kevin Dale Balmforth, Richard Ove Nielsen
  • ACOUSTIC WIDE AREA AIR SURVEILLANCE SYSTEM
    Publication number: 20090257314
    Abstract: A method and apparatus for detecting an aircraft. The method is provided for wide area tracking of aircraft. An acoustic emission of the aircraft is detected from a plurality of locations. A position of the aircraft at a set of times is estimated by comparing a set of harmonically related Doppler shifted frequencies for the acoustic emission to an expected zero Doppler shifted frequency of the aircraft to form an estimated position. The position of the aircraft and a heading of the aircraft are tracked using the estimated position. The aircraft type is classified based on the corresponding set of zero Doppler frequencies at each acoustic sensor.
    Type: Application
    Filed: April 14, 2008
    Publication date: October 15, 2009
    Inventors: Henry H. Davis, Kevin Dale Balmforth, Richard Ove Nielsen