Patents by Inventor Timothy P. Bielek

Timothy P. Bielek 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: 8994577
    Abstract: A synthetic aperture radar (SAR) image is produced by using all phase histories of a set of phase histories to produce a first pixel array having a first azimuth resolution, and using less than all phase histories of the set to produce a second pixel array having a second azimuth resolution that is coarser than the first azimuth resolution. The first and second pixel arrays are combined to produce a third pixel array defining a desired SAR image that shows distinct shadows of moving objects while preserving detail in stationary background clutter.
    Type: Grant
    Filed: July 5, 2012
    Date of Patent: March 31, 2015
    Assignee: Sandia Corporation
    Inventors: Timothy P. Bielek, Douglas L. Bickel
  • Patent number: 8427359
    Abstract: Radar data associated with radar illumination of a movable target is processed to monitor motion of the target. A plurality of filter operations are performed in parallel on the radar data so that each filter operation produces target image information. The filter operations are defined to have respectively corresponding velocity ranges that differ from one another. The target image information produced by one of the filter operations represents the target more accurately than the target image information produced by the remainder of the filter operations when a current velocity of the target is within the velocity range associated with the one filter operation. In response to the current velocity of the target being within the velocity range associated with the one filter operation, motion of the target is tracked based on the target image information produced by the one filter operation.
    Type: Grant
    Filed: January 6, 2011
    Date of Patent: April 23, 2013
    Assignee: Sandia Corporation
    Inventors: Douglas L. Bickel, David W. Harmony, Timothy P. Bielek, Jeff A. Hollowell, Margaret S. Murray, Ana Martinez
  • Patent number: 7498968
    Abstract: High resolution SAR images of a target scene at near video rates can be produced by using overlapped, but nevertheless, full-size synthetic apertures. The SAR images, which respectively correspond to the apertures, can be analyzed in sequence to permit detection of movement in the target scene.
    Type: Grant
    Filed: February 13, 2007
    Date of Patent: March 3, 2009
    Assignee: Sandia Corporation
    Inventors: Timothy P. Bielek, Douglas G. Thompson, Bruce C. Walker