6.4.2S矩阵 即 [a](1]-[s]"[s]a]+[a]"(1]-[s]"Ia]=j40(w,-W.) 左边第一项为实数，第二项为虚数；右边为虚数6.4.2 S矩阵 [ ] [ ] ( ) Wm We i v = j - + 4w [ ] ([ ] [ ] )([ ] [ ] )[ ] ( ) Wm We a - s + s a = j - + + + 1 1 4w [ ] ([ ] [ ] [ ])[ ] [ ] ([ ] [ ] )[ ] ( ) Wm We a - s s a + a - s a = j - + + + + 1 1 4w 即 左边第一项为实数，第二项为虚数；右边为虚数