Digital Adaptive Spectral Filtering
نویسنده
چکیده
An adaptive procedure for removing a multimodal power spectrum using cascaded transversal digital filters is described. Sach section of the c/erall filtfir consists of a second order transversal filter whose zero pair is adaptively adjusted to remove one of the modes of the undesired spectrum. Ihe paper is divided into two sections. The paper first treats the case of an unknown but unimodal power spectrum. The second section treats the case where the power spectrum is multimodal, specifically the dual mode case. For this case a gradient approach was used to adaptively adjust the zero pairs of the digital filter to remove the unwanted fpectrura. A set of simulation results are presented for various combi-jations of modal separation and relative power between modes.
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