Improved FIR filters for discrimination of damped sinusoids
نویسندگان
چکیده
It is shown that the FIR filter based discrimination of damped sinusoids can be improved by removing the linear phase constraint. The resulting filter is not only economical and better suited to processing of shorter data records, but also offers superior numerical conditioning and therefore reduced error and sensitivity to perturbations. Zusammenfassung Gezeigt wird, da13 die auf FIR-Filtern basierende Unterscheidung gedampfter sinusfiirmiger Signale durch Vernachllfligung des linearen Phasenterms verbessert werden kann. Das hieraus resultierende Filter ist nicht nur Gkonomisch und effizienter bei der Signalverarbeitung kurzer Datenstiicke, sondern besitzt such herausragende numerische Eigenschaften. Deshalb weist er geringere Fehler und hiShere Robustheit bei Wrungen auf. RbumC II est montrt: dans cet article que la discrimination de sinusdides amorties basCe sur un filtre FIR peut &tre am&liorCe en supprimant la contrainte de phase 1inCaire. Le filtre rCsultant est non seulement &conomique et mieux adapt& au traitement d'enregistrements de courte durCe, mais prCsente Cgalement un meilleur conditionnement numCrique et de ce fait une erreur et une sensibilitt aux perturbations rCduites.
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عنوان ژورنال:
- Signal Processing
دوره 62 شماره
صفحات -
تاریخ انتشار 1997