Communications: directive radio wave systems and devices (e.g. – Return signal controls radar system – Receiver
Reexamination Certificate
2007-02-20
2007-02-20
Gregory, Bernarr E. (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
Return signal controls radar system
Receiver
C342S027000, C342S028000, C342S089000, C342S175000, C342S192000, C342S195000, C342S196000, C382S103000, C367S087000, C367S093000, C367S094000, C324S076120, C324S076190, C324S076210
Reexamination Certificate
active
11434573
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.
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Glut Mark O.
Gregory Bernarr E.
The United States of America as represented by the Secretary of
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