2-D digital filter stability in the presence of second kind nonessential singularities
作者： R. Alexander , J. Woods
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摘要: We present two new conditions for the stability of 2-D digital filters in presence nonessential singularities second kind. The first is a necessary condition expressed terms tangents to algebraic curve at zero denominator polynomial on distinguished boundary unit polydisk. This shown be preserved under parameter quantization some cases. we sufficient stability, and considerably weaker than that imposed by Goodman.
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