Locally Harmonizable Covariance: Spectral Analysis Dominique Dehay and Abdelaziz Loughani
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چکیده
In this work, the stationarity of the covariance K2, is replaced by a less restricting notion: the harmonizability in the sense of Loeve [4] (strong harmonizability according to Rao [9]). Then we present the spectral analysis of such covariances which are not necessarily bounded. Remind that a covariance K defined on M. is harmonizable when there exists a complex valued measure M on K such that for ali i , s in K,
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