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An interference-tolerant algorithm for localization of cyclostationary-signal sources

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3 Author(s)
Izzo, L. ; Dept. of Electron. Eng., Naples Univ., Italy ; Paura, L. ; Poggi, G.

A method for detecting the number of cyclostationary signals radiated by remote sources and for estimating their directions of arrival by a linear and uniform array is presented. Whereas the traditional techniques exploit the spatial coherent properties, the new method locates the signal sources using the spectral coherence properties as well. This approach eliminates the need to know the characteristics of the noise and the interference, regardless of the extent of their spectral overlap. Moreover, the method applied equally well to environments containing more interferers than sensors. The conditions of applicability of the method are the existence and the knowledge of a cycle frequency at which all the signal sources exhibit spectral correlation but the noise and interference signals do not, and the existence and the knowledge of a value of the lag parameter such that the cyclic cross-correlation matrix of the desired signals has full rank

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Signal Processing, IEEE Transactions on  (Volume:40 ,  Issue: 7 )