. , .
Df,
= +Df , (1.10)
Df - . , , Df f:
= +Df+2Df, (1.11)
Df = fu/C, u , /; C=300 000 / .
, .
( ). . , Df=0.
, , . , .
Df = (1.12)
d, d - ; d=3*103...102 - ; d=3*104...3*103 - .
Df = (1.13)
, , 10-4......10-3, - 10-5. ( , , ), d 10...100 . d=10-7...10-5; d 107...109; d=d.
|
|
, .
Df=2Df. (0.1...0.2). , , ;
= +2Df / , (1.14)
- . () =5...20, , - . (0.1...0.2),
³ 2Df / (0.1...0.2). (1.15)
() , =.
Df :
³ +Df. (1.16)
, , , .
s = 20lg(f0) / (f0 Fmax) [], (1.17)
Fmax - .
: , , , :
s = s+s+s+s [], (1.18)
, . , .
5651-89 :
f < 250 s=s=18 , f> 250 s = 14 ;
f > 250 s=14 .
( ) , , . s = s + s = 9...13 , s ³ 6 - (s, s, s , ). s, ( ) .
, ( ). : s + s £ (3...6) , , . 565189 =120...180. , .
|
|
, ( ), . s£1...3 ( 4...8 f<250 ), s£4...8 , s£1...2 , s£1...5 . () () .
, , . , .
( ) .
, . -
= 2Fmax, (1.19)
-
= 2(1+m+ ) Fmax , (1.20)
= Fmax, (1.21)
= Fmax - Fmin , (1.22)
Fmax, Fmin ; m=Dfm/ Fmax - , Dfm - . (m<<1) 2 Fmax, (m>>1) 2Dfm+ 2 Fmax.
, , ( ) ... F. , ,
Fmax = a/2t0 = aB/2, (1.23)
t0 - ; =1/t0 - , ; =2...3 , =1 .
(1)
= a/t0 = 2aF , (1.24)
(2)
= 2(F0+ Fmax) = 2(F0+aF), (1.25)
= 2F , (1.26)
F=1/2t0 - ; F0 - ; D=10...100 - ; m=Dfm/F - , Dfm - , .
, , .