STRUCTURE AND SMITH-MACMILLAN FORM OF A RATIOINAL MATRIX AT INFINITY.

The use of special row and column operations in the reduction of a rational matrix to its Smith-MacMillan form at infinity is investigated. The connections between this reduction procedure and the valuation approach are established. A graphical method for finding the Smith-MacMillan form of a rational matrix at infinity from its Bode magnitude array, and some new results on realization theory for polynomial matrices are presented