Title :
A new approach to frequency line tracking
Author :
Keane, Harold G.
Author_Institution :
Orincon Corp., San Diego, CA, USA
Abstract :
The Dynamic Undersea Detection Extractor (DUDE), an implemented acoustic feature extractor designed to extract and statistically characterize narrowband signals in noise, is described. DUDE accepts normalized spectral data and produces symbolic representations of narrowband acoustic signals. If the data are beamformed, DUDE also performs multibeam correlation to produce bearing estimates. DUDE distinguishes itself from other feature extractors primarily by its ability to characterize signals that move in frequency over time (i.e., dynamic signals). Among the unique features in DUDE´s algorithm is the `line-likeness in a neighborhood´ test used to prune spurious signals. Statistical performance analysis results for the DUDE algorithm are also presented
Keywords :
acoustic signal processing; computerised signal processing; oceanographic techniques; statistical analysis; DUDE algorithm; Dynamic Undersea Detection Extractor; acoustic feature extractor; bearing estimates; dynamic signals; frequency line tracking; multibeam correlation; narrowband acoustic signals; noise; normalized spectral data; performance analysis; spurious signals; statistical characteristics; Acoustic noise; Acoustic signal detection; Data mining; Feature extraction; Frequency; Narrowband; Performance analysis; Signal design; Testing; Underwater acoustics;
Conference_Titel :
Signals, Systems and Computers, 1991. 1991 Conference Record of the Twenty-Fifth Asilomar Conference on
Conference_Location :
Pacific Grove, CA
Print_ISBN :
0-8186-2470-1
DOI :
10.1109/ACSSC.1991.186559
