international telecommunication union - itu!pdf-a.pdf3 itu-r sm.1268-3. khz. 340 – (ms/khz 1) ms....
TRANSCRIPT
(FM)
ITU-R SM.1268-3(2014/08)
SM
iiITU-R SM.1268-3
(IPR)
(ITU-T/ITU-R/ISO/IEC)1
1 R-ITU
R/go/patents/en-http://www.itu.int/ITU
en/REC-R/publ/int.itu.www://http
BO
BR
BS
BT
F
M
P
RA
RS
S
SA
SF
SM
SNG
TF
V
ITU-R 1
2015
ITU 2015
(ITU)
ITU-R SM.1268-31
ITU-R SM.1268-3
(FM)
(2014-2011-1999-1997)
(FM)
(FM)
ITU-R BS.412
(FM)ITU-R BS.412
kHz 75kHz 50±
kHz 19
(RDS)
MHz 108
(RDS)
2ITU-R SM.1268-3
1
150kHz
250kHz
1 1
(FM)
2 2
1
1
2
3
– 5
–
– 50dB
4
– )CF(0f
– (RBW)10kHz(IF)
– (VBW)kHz 10
ITU-R SM.1268-33
– 340kHz
– 340ms(ms/kHz 1)
–
–
(DSP)
5
5
7
x)0f(
0dB
6
7
x)0f(
ydB 0
x (kHz)
y (dB)
x (kHz)
y (dB)
74 – 0f 0 74 0f 0
7,510 – 0f 15– 7,510 0f 15–
124 – 0f 30– 124 0f 30–
2,515 – 0f 40– 2,515 0f 40–
1
4ITU-R SM.1268-3
1
SM.1268-01
– 152.5
– 124
– 107.5
– 74 74
107.5
124
152.5
0
– 5
– 10
– 15
– 20
– 25
– 30
– 35
– 40
– 45
– 50– 170 – 136 – 102 – 68 – 34 0 34 68 102 136 170
f0
2
(FM)
1
1.1
0f
)t(f)t(
)0f(
)t(f 0f )t(f
f)0f()t(f
(kHz)
dB
ITU-R SM.1268-35
(RDS)
60
dBr }td 2)/19 kHz)t(f(10 log {(2/60 s)
0 dBr
19kHz
2.1
3
3.1
ITU R BS.412(FM)
75kHz60
19kHz
4.1
15
2
1.2 )sE/nE(
1.32.3
12
6ITU-R SM.1268-3
1
±f (kHz)
(dB)
0 40
X
2)
2(*2ln
log*2040 B
X
e
B13dBkHz
2
SM.1268-02
–500 –400 –300 –200 –100 100 200 300 400 5000–10
0
10
30
40
20
IF-BW = 150 kHz
IF-BW = 200 kHz
IF-BW = 250 kHz
(kHz)
(dB
)
ITU-R SM.1268-37
2
±f (kHz)
(dB)
0 40
B/2 35
X (for X > B/2) 35 – 0,2*(X – B/2)
B23dBkHz
3
SM.1268-03
–500 –400 –300 –200 –100 100 200 300 400 5000–20
0
30
40
20
IF-BW = 200 kHz
IF-BW = 250 kHz
IF-BW = 300 kHz
10
–10
22
s %< 64 ) dU/rU( )1(
(kHz)
(dB
)
8ITU-R SM.1268-3
rU
dU
τ (µs)
z4%/kH,)/df < 0dU/Ud( )2(
U
3.2
47 dBm1
3
200kHz
1.3
(1)
(2)
____________________ 168dB(µV/m)BS.599 R-ITU1
12dB
ITU-R SM.1268-39
150kHz
0,4%kHz
2.24
2.3
100kHz
3
4
SM.1268-04
0 20 40 60 100 120 140800
0.20
0.10
0.5
0.15
0.25
0.30
0.40
0.35
0.45
3
kHz 80 ≥ kHz 2±
kHz 80 %5`±
3.3
(dBr)dBr1.1
6dBr6dBr4
(kHz)
(kH
z/%
)
10ITU-R SM.1268-3
4
(dBr)
(dB)
2– < 0,4 ±
2–2+ 0,2 ±
2 0,4 ±
4
75kHz
(FM)
2
%95
(FM)75kHz
%10–477kHz
60
(FM)
0,2dBr
5
1.5
2.5
77kHz4
150kHz1kHz
150
5
ITU-R SM.1268-311
x0xN
6
50ms50ms
20Hz
N
7
5
SM.1268-05
0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150
500
400
300
200
100
0
6
SM.1268-06
0 25 50 75 120
110
177 kHz
–1
110–2
110
–3
110
–4
110
–5
110–6
kHz 150 - 0150
(kHz)
12ITU-R SM.1268-3
7
SM.1268-07
25
00
50
100
75
125
09:16 09:21 09:26 09:31 09:36 09:41 09:46 09:51 09:56 10:01 10:06 10:11
Peak-hold = 10 s
(kH
z)