上游充通大 SHANGHAI JIAO TONG UNIVERSITY 2.相似性：c[f()]-F(p)(Rep>o),a>0,则 cval-ar8） (Rep>aoo) 日(epa）
0 1 0 1 ( ) Re 1 ( ) Re p f at F p a a a t F ap f p a a a s - s L L 2.相似性：L f t F p p a ( ) ( ) Re , 0 s 0 ,则
上游充通大 SHANGHAI JIAO TONG UNIVERSITY 3.原像延迟性： 设L[f)]=F(p)(Rep>oo),则 (1)L[f(t-to)u(t-t)]=eF(p)(Rep>); (2)L'[e F(p)]=f(t-to)u(t-to). f(t) f(t-to) to
0 0 0 0 0 0 1 0 0 ( ) ( ) Re , ( ) ( ) ( ) Re (2) [ ( )] ( ) ( ). pt pt f t F p p f t t u t t e F p p e F p f t t u t t s s - - - - - - - 设L 则 (1) L ； L O t 0 t 0 f t f t t ( ) ( ) - 3.原像延迟性：