A Nyquist-Like Test for the Stability of Two-Dimensional Digital Filters.
TEXAS TECH UNIV LUBBOCK DEPT OF ELECTRICAL ENGINEERING
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This paper constructs a Nyquist-like test for the stability of two-dimensional digital filters. The test takes the form of a continuum of classical one-variable Nyquist plots parameterized by the elements of the unit cycle of the complex plane. Since the parameter space is compact, the test can be accurately approximated by a finite number of classical one-variable Nyquist plots and is therefore readily implemented on a computer. Author
- Numerical Mathematics