Patents by Inventor Douglas E. Elerath

Douglas E. Elerath 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: 5685504
    Abstract: A system for guiding the flight of a projectile to a target. The system comprises a tracking and guidance system, the projectile, and a projectile reference and control system that is part of the projectile. The tracking and guidance system includes a target tracker, a projectile tracker for providing a projectile-tracking laser beam, and a target designator for designating the target using a target-tracking laser beam, and for providing range data indicative of the range to the target. A processor is coupled to the target designator, the target tracker, and the projectile tracker for processing target and projectile return signals and target range signals to generate an actuator command signal that is transmitted by the projectile tracker using the projectile-tracking laser beam and that is used to alter the flight of the projectile.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: November 11, 1997
    Assignee: Hughes Missile Systems Company
    Inventors: Arthur J. Schneider, Kenneth R. Johnson, Henry August, Douglas E. Elerath, Paul D. Shubert
  • Patent number: 5349432
    Abstract: An improved method for imaging laser illuminated objects through a near field aberrator, and/or for measuring the phase distortions of the aberrator. The method utilizes a set of at least three laser beams that are offset with respect to each other in a lateral direction. This offset produces three similarly offset but otherwise identical complex fields in the wave fronts of the reflected return at the sensors. The individual laser beams are tagged with identifying characteristics that are apparent at the sensors, whereby the reflected return may be identified and classified according to origin in individual laser beams. The sensor signals are processed to measure distortions in the aberrator and to apply the measurements to obtain an enhanced image.
    Type: Grant
    Filed: December 11, 1992
    Date of Patent: September 20, 1994
    Assignee: Hughes Aircraft Company
    Inventor: Douglas E. Elerath