Patents by Inventor David P. Skinner

David P. Skinner 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).

  • Utilization of entire transmitted bandwidth in continuous transmission FM sonar
    Patent number: 4449209
    Abstract: A continuous transmission FM sonar avoids target ambiguities while utiliz the entire transmitted bandwidth for echo analysis. The sonar is characterized by digital generation of direct and quadrature versions of the transmitted frequency sweep, and balanced modulators responsive thereto to effect complex demodulation of the returned signals prior to analysis, as by a fast fourier transform frequency analyzer for target detection.
    Type: Grant
    Filed: January 11, 1982
    Date of Patent: May 15, 1984
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: William J. Zehner, David P. Skinner