Title :
Cascaded frequency domain bandpass filters for multivernier spectra
Author :
Williams, Jack R. ; Black, Anthony W. ; Montgomery, Robert S.
Author_Institution :
Diagnosti/Retrieval Syst. Inc., Oakland, NJ, USA
fDate :
8/1/1993 12:00:00 AM
Abstract :
Passive sonar processing generally consists of many concurrent verniers on each beam or channel which are very narrow bands centered at widely separated, independent frequencies sparsely placed across the total search band. Each is analyzed by a fast Fourier transform (FFT) with extremely narrow coefficients. A cascaded frequency domain filter structure that provides such verniers with fewer computations than other methods is described
Keywords :
band-pass filters; cascade networks; fast Fourier transforms; filtering and prediction theory; frequency-domain analysis; signal processing; sonar; spectral analysis; FFT; bandpass filters; cascaded frequency domain filter; concurrent verniers; fast Fourier transform; multivernier spectra; passive sonar processing; Band pass filters; Bandwidth; Computational fluid dynamics; Convolution; Fast Fourier transforms; Finite impulse response filter; Frequency domain analysis; Lifting equipment; Signal resolution; Sonar;
Journal_Title :
Signal Processing, IEEE Transactions on
