Power Settings - R&S SMW-K44 User Manual

Satellite Navigation
Figure 9-1: Free space path-loss calculation
SV = Reference space vehicle
0
R = Reference range
0
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
P
SV,echo
●
P
●
P

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".
User Manual 1178.6379.02 ─ 01
= P + P
SV,signal Echo,signal
is the absolute satellite's power
SV,signal
is the power offset per echo, as set with the parameter
Echo,signal
SV,echo
, where:
Space Vehicle Configuration
Power Settings
is calculated as follows:
Power Offset.
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