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Single sensor detection and classification of multiple sources by higher-order spectra

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2 Author(s)
Dogan, M.C. ; Dept. of Electr. Eng., Univ. of Southern California, Los Angeles, CA, USA ; Mendel, J.M.

The authors consider the detection and classification of multiple non-Gaussian linear sources by superposition of their waveforms available from a single sensor whose measurements are possibly corrupted by additive Gaussian noise. It is shown that by using multiple frequency lags of the trispectrum of single sensor measurements, it is possible to form a trispectral matrix C that possesses the same structure as the array covariance matrix of narrowband multisensor measurements. Consequently, techniques that are applicable to narrowband array processing can be adapted for the analysis of single sensor data; the rank of C reveals the number of sources, and a multiple signal characterisation (MUSIC)-like method can be used for source classification using a directory of candidate source spectra. Simulations are included to illustrate the proposed methods

Published in:

Radar and Signal Processing, IEE Proceedings F  (Volume:140 ,  Issue: 6 )