GNSS Production Configuration and Settings
R&S
®
SMBV-P101
32
User Manual 1176.9787.02 ─ 05
Remote command:
[:SOURce<hw>]:BB:GNPR:SATellite<st>:ICPHase
Resulting Start Frequency
Indicates the currently valid values for Doppler shifted carrier frequency.
The resulting frequency is calculated according to the following:
●
GPS, Galileo, BeiDou
f
resulting
= f
band
+ f
Doppler
,
Where f
band
.
●
Glonass
f
band_L1
= 1602 MHz
,
f
band_L2
= 1247 MHz
k
= frequency number
f
Glo_L1_resulting
, MHz = 1602 + ( k * 0.5625) + f
Doppler
f
Glo_L2_resulting
, MHz = 1247 + ( k * 0.4375) + f
Doppler
Remote command:
[:SOURce<hw>]:BB:GNPR:SATellite<st>:FREQuency?
Resulting Start Chip Rate
Indicates the currently valid values for the chip rate. The relevant change to the chip
rate is carried out automatically if the Doppler shift is changed.
The resulting chip rate is calculated according to the following:
●
GPS, Galileo, BeiDou
f
resulting
= f
code
* {1 + f
Doppler
/ f
band
}
,
Where f
band
,
f
code_GPS/Galileo
=
1.023
MHz and f
code_BeiDou
=
2.046
MHz
●
Glonass on L1/E1 band
f
resulting
= f
code
* {1 + f
Doppler
/ [f
band
+ k * 562500 (Hz)]}
●
Glonass on L2 band
f
resulting
= f
code
* {1 + f
Doppler
/[ f
band
+ k * 437500 (Hz)]}
Remote command:
[:SOURce<hw>]:BB:GNPR:SATellite<st>:CACRate?
4.4.4 Modulation Control
In the "Modulation Control" dialog, you can enable or disable the signal components for
the production tests individually. The components are denoted in a block diagram,
which varies according to the selected satellite signal.
The R&S
SMBV provides this feature for user defined test scenarios in static mode.
To access these settings:
1. Select "Baseband block > Satellite Navigation > GNSS Production..".
2. Select "Satellite Configuration > Satellite Table > e.g. Sat 3 > GLONASS".
Satellite Configuration Settings
