Patents by Inventor Karl-Heinz Zeller

Karl-Heinz Zeller 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).

  • Aircraft or spacecraft based synthetic aperture radar
    Patent number: 6388606
    Abstract: In the inventive aircraft based or spacecraft based radar system with synthetic antenna aperture (SAR=Synthetic Aperture Radar) a transmit antenna and a receive antenna are provided according to a bistatic radar, which are arranged above the earth's surface, physically separate and on different platforms of which at least one is moving, so that a relative movement results between the transmit antenna and the receive antenna. Either the transmit antenna, the receive antenna, or both antennas are designed for ambiguity suppression. The radar system according to the invention is useful particularly for the systematic imaging of the earth's surface.
    Type: Grant
    Filed: August 16, 2000
    Date of Patent: May 14, 2002
    Assignee: Deutsches Zentrum fur Luft-und Raumfahrt e.V.
    Inventors: Wolfgang Keydel, Helmut Suss, Karl-Heinz Zeller, Reinhard Schröder