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3.1 () . .
1
3.2 W∞ (s).
:
3.3 :
a0s3+ a 1 s 2 +a 2 s+a3 = 0
3.4 -.
,
3.5
W (jω) = A (ω) ejφ ( ω ) = P (ω) +jQ (ω)
s = jω
j 2 = 1 .
W (jω) = a0s 3 + a 1 s 2 +a 2 s+a3 = a0 (jω)3 + a 1(jω)2 +a 2(jω) +a3
3.6 (P (ω)) (jQ (ω)) :
P (ω) =
Q (ω) =
3.7 :
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6 , .. []: 190601 / .. , .., ; . , . , 2008. 56 .
