Patents by Inventor Karl-Hans Waegel

Karl-Hans Waegel 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 device for locating and identifying objects by means of an encoded transponder
    Patent number: 5821895
    Abstract: A method and device for locating and identifying objects uses an encoding transponder in combination with the use of an SAR device carried in aircraft and spacecraft. Signals transmitted by the SAR device are received by the transponder are provided with an additional dominant signal structure and subsequently retransmitted back to the SAR device. Once the modulated code sequence is known, a signal correlation can be carried out between the signals output by the transponder and the signal reflected from the environment.
    Type: Grant
    Filed: May 23, 1996
    Date of Patent: October 13, 1998
    Assignee: Deutsche Forschungsanstalt Fur Luft-Und Raumfahrt E.
    Inventors: David Hounam, Karl-Hans Waegel