Patents by Inventor Thach N. Nguyen

Thach N. Nguyen 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).

  • Target indentification method using cepstral coefficients
    Patent number: 7180442
    Abstract: A method of identifying an unknown target comprising creating a density function of cepstral coefficients for a known target; receiving a signal from the unknown target; transforming the signal from a time spectrum to a frequency spectrum using a Fourier transform; transforming the frequency spectrum to a cepstrum; creating a density function of cepstral coefficients for the unknown target; and comparing the density function of the unknown target with the density function of the known target.
    Type: Grant
    Filed: May 3, 2006
    Date of Patent: February 20, 2007
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Thach N. Nguyen