4
().
- , , .4.1;
- , , .4.1.
( )
.. , ..
.4.1
--
- (4.1)
:
.4.2 ( --)
(4.1)
(4.2)
:
(4.3)
(ω) = ωτ -
.4.3
.4.4
.4.5
.4.6
2. + .
-> + .
.4.7
:
cos (wt+f1)sin(wot+f2)= 
(4.4)
:
~ Df (4.5)
[ - , ]
.4.8 ̖-
- ;
τ3 .
∆φt3=ωτ3 (4.6)
ω(t)=ω0+ωmλ(t) - (4.7)
∆φ=ω0τ+ωmτλ(t) - (4.8)
U(t) = cos[ω0t +ω0τ+ωmτλ(t)]
U(t) = sin[ω0t + ωmλ(t)]
U(t) = sin[ω0τ + ωm(1-τ)λ(t)]
U(t) ~ ωm (1-τ) λ(t) (4.9)
,
()=-pt
()=(p)/ N(p), m<n
.
.4.9
.4.10
wo=w U1 U2 900 ;
wo> <w U1 U2 ( ).
.4.11
:
- ;
-
() , .
- !
|
|
|
.
.4.12 .
X .() .. -
.
- ( U )
G ,
.4.12
(4.10)
ω=ω-ω
:
-
-
-
:
.
.4.13
.4.14
U
U=U coswct, U<< U (4.11)
I= I0 [expaU -1] (4.12)
n=2,3,. (4.13)
I=S(t)U(t)= S U coswct + S1 U coswct coswt + U coswct 
(4.14)
U= I Z (4.15)
:
ω-ω; ω+ω ; nω- ω; nω+ ω
, -
U ~ cos(wc-w)t, (4.16)
ω=ω-ω
.4.14
:
1. , .
2. .
3. ( ) , . . U. , (ω-ω) .
