, .
, ,
.. = 5,23 + 11 lg lg 1-1 + 20 lg (m -1) + Δ, , (1.8)
;
m = 3 ;
Δ , ( 2);
= 10-8 .
P1= 10-9- ;
.. = 5,23 + 11 lg lg 109 + 20 lg (3 -1) + 12=10,5+5,23+6,02+12=33,75
.. = + 121 - 10 lg F 10 lg(f / 2) 1,175, , (1.9)
= 10 12 ;
F ;
f ;
= a(f) × l, , ;
l - .
a(f) , 12 , .
a(f)= 2,43Öf + 0.0078f
-1920 f=140
f=fT/2, f=140/2=70
a(70)= 2,43Ö70 + 0.0078*70=20,33+0,546=20,876
.. = 10 +121- 10 lg 4 10 lg(70) 1,175*20,88*l=106,528-24,53*l,
³.. , , .
106,528-24,53*l≥33,75
l≤(106,528-33,75)/24,53=2,97
:
k=(L/l) 1. (1.10)
k=(995/2,97) 1=288
, . L,
N = (L / L) 1. (1.11)
N = (995 / 240) 1=3
N = k - N. (1.12)
N = 288-3=285
, .
, .. , .
l = l ʷl. (1.13)
l = 995-334*2,97=3,02
|
|
l = l/2. (1.14)
l = 3,02/2=1,51
3 -
.. -1920 240 , 3 .
3.
"-" . .
, , , () (). - ( -), , : , - ( ).
, ..
U = I ×R0 ×L +U×n, (2.1)
I - , (. 4);
R - , , , / (. 3);
L - , ;
n - , ( );
U - , (. 4).
U = 110*10-3 *90*38+9,8*21=376,2+205,8=582
U U =245, L = L /2 n = N /2.
U =110*10-3*90*19+9,8*11=291
U =400*10-3*7,1*240+10*72=681,6+950=1401,6
3-
2,6/9,4 | 1,2/4,6 | -1,2 | 0,9 | , 0,4 | , 0,5 | , 0,7 | |
R, / | 7,1 | 31,7 | 15,85 | 28,4 |
4 -
-30 | -120 | -480 | -1920 | |
, | 9,8 | |||
, | ||||
, |