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Detecting a hidden periodic signal when its period is unknown

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1 Author(s)
Hinich, M. ; Virginia Polytechnic Institute and State University, Blacksburg, VA

A simple method is presented for detecting an unknown periodic signal in additive noise. The period is unknown, but the amplitudes of the fundamental and the first M - 1 harmonics are known to be nonzero. One application is the detection of a torpedo by a submarine sonar system from the observed acoustic line spectrum generated by the torpedo's blade motion.

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Acoustics, Speech and Signal Processing, IEEE Transactions on  (Volume:30 ,  Issue: 5 )