Global Positioning System Reference
In-Depth Information
(J/S)
= 25
(J/S)
= 30
(J/S)
= 35
(J/S)
= 40
(J/S)
= 45
(J/S)
= 50
dB
dB
dB
dB
dB
dB
100
100
Frequency: L1 = 1575. 42 MHz
SV incident signal power: (S ) = 158.5 dBW
Antenna gain toward jammer: (G ) = 3 dB
Receiver front end jammer power loss: (L )
−
rdB
−
JdB
80
80
= 0 dB
fdB
60
60
40
40
20
20
0
0
2
2
4
4
6
6
8
8
10
10
12
12
14
14
16
16
18
18
20
20
EIRP (W)
(a)
(J/S)
= 55
(J/S)
= 60
(J/S)
= 65
(J/S)
= 70
(J/S)
= 45
(J/S)
= 50
dB
dB
dB
dB
dB
dB
20
Frequency: L1 = 1575. 42 MHz
SV incident signal power: (S ) = 161.5 dBW
Antenna gain toward jammer: (G ) = 3 dB
Receiver front end jammer power loss: (L )
18
−
rdB
−
JdB
16
= 0 dB
fdB
14
12
10
8
6
4
2
0
2
4
6
8
10
12
14
16
18
20
EIRP (W)
(b)
Figure 6.6
Range to jammer as a function of EIRP: (a) L1 C/A code receiver, (b) L1 P(Y) code receiver, and
(c) M code receiver.
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