Patents by Inventor Hans Hellsten

Hans Hellsten 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).

  • Signal processing apparatus for synthetic aperture radar
    Patent number: 5488373
    Abstract: A signal processing apparatus for use in SAR radar. The signal processing apparatus uses a new method of processing SAR images, primarily for wide band SAR. The new method is based on the numerical unfolding of differential equations along the flight path. The method makes motion compensation possible and can be used along a curved flight path and irrespective of the acceleration of the aircraft. Moreover, the method makes real time processing possible.
    Type: Grant
    Filed: September 27, 1993
    Date of Patent: January 30, 1996
    Inventor: Hans Hellsten