Space Vehicle Configuration
Satellite Navigation
62
User Manual 1178.6379.02 ─ 01
Figure 9-1: Free space path-loss calculation
SV
0
= Reference space vehicle
R
0
= Reference range
SV = Space vehicle
R
= Range between the SV and the receiver
r
= Earth's radius
Absolute multi-path echo power
The absolute power of an echo for a given signal P
SV,echo
is calculated as follows:
P
SV,echo
= P
SV,signal
+ P
Echo,signal
, where:
●
P
SV,signal
is the absolute satellite's power
●
P
Echo,signal
is the power offset per echo, as set with the parameter
9.1 Power Settings
Access:
1. Select "GNSS > Simulation Configuration > Satellites".
2. Set the
"Reference Power"
.
All power values are set relative to the reference power.
3. Select the GNSS system for that you want to change the satellite's power settings,
for example GPS.
4. Select "SV# > SV Config".
5. In the "SV Configuration" dialog, select
"Signals Configuration"
.
6. Select
"Add Power Path-Loss > On"
to account for the free-space attenuation.
7. Set a
"Power Offset"
to additionally reduce the signal power of the satellite.
8. In dual-band or multi-signal configurations, set a "Signal Power Offset" to account
for the power relation between the signals.
9. To apply the power settings of the current satellite to other SV ID, select for exam-
ple "SV-ID = 11" and "Copy Power Settings To".
Power Settings
