Patents by Inventor Albert H. Nuttal

Albert H. Nuttal 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).

  • System and method for active sonar signal detection and classification
    Patent number: 6714481
    Abstract: A sonar system and method are provided to extract and identify information about a particular target illuminated by an active sonar system. The present invention utilizes a Volterra Series Expansion in conjunction with a least squares procedure to estimate channel and target responses, which may be linear or nonlinear. The system estimates the channel and target responses for different orders of the Volterra Series Expansion and then selects the order for which a minimum error is determined with respect to a measured acoustic return signal. The system requires as inputs only the excitation waveform and the measured acoustic return signal.
    Type: Grant
    Filed: September 30, 2002
    Date of Patent: March 30, 2004
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Richard A. Katz, Albert H. Nuttal