GNSS Production Configuration and Settings
R&S
®
SMBV-P101
27
User Manual 1176.9787.02 ─ 05
The Glonass satellites transmit the offset between GPS and GLONASS system time as
part of their navigation message. They assume only a delay and no frequency drift.
The time offset is calculated as following:
GPS – GLONASS = "GPS – UTC" + "UTC – UTC(SU)" – "GLONASS -
(UTC(SU) + 3h)" – 3h
For hybrid GNSS configuration with activated GLONASS satellites, this GPS – GLO-
NASS time offset is maintained constant. This is done by automatically adjusting the
"GPS-UTC" drift parameters ("A_1","T_ot" and "WN_ot") while changing the "UTC –
UTC(SU)" parameters.
4.4 Satellite Configuration Settings
Access:
1. Select "Baseband block > Satellite Navigation > GNSS Production".
2. Select "Satellite Configuration".
In the "Satellite Configuration" dialog, you can activate and configure the signal
simulation of the satellites, and configure the modulation control and signal dynam-
ics.
4.4.1 Power Configuration
This section comprises the power control settings providing flexible real time configura-
tion of the power settings per satellite. The power levels of the satellites are calculated
as follows:
Absolute Power
Sat#_Signal
= Ref. Power + Relative Power
Sat#_Signal
Satellite Configuration Settings
