Stability test for B(Z 1 ,Z 2 )=Σ 2 m=0 Σ 2 n=0 b mn Z m 1 Z n 2 in closed form
Zou Mou‐Yan, Rolf Unbehauen · Electronics Letters · 1986
Second-order 2-D recursive digital filters are frequently used as building blocks in computer-aided design by means of optimisation techniques. An efficient, simple and exact procedure to test the stability of such filters is presented.