Geo Ranging Information - R&S SMW-K44 User Manual

Satellite Navigation
"Replay Historical Data and Sync Atmosphere & SV Errors"
"Replay Historical Data"
Remote command:
[:SOURce<hw>]:BB:GNSS:ECMode

13.4.2 GEO Ranging Information

The SBAS GEO satellites transmit GPS-L1-like signals to extend the number of visible
satellites. The signals transmitted with this purpose are called ranging signals.
As for any other GNSS satellites, you can configure the simulated ranging information
of the GEO satellites and, if required, change the broadcasted ranging information.
● Simulated Orbit and Simulated Clock
● Broadcasted Orbit, Clock and Time Conversion
User Manual 1178.6379.02 ─ 01
Corrections are real data, retrieved from a predefined or user-defined
*.nstb or *.ems files, usually downloaded from the SBAS server.
The SBAS navigation massage, including all types of correction data
are configurable. You can also define which SBAS messages are
used and how they are scheduled.
The default SBAS corrections correspond to the corrections at the
default simulation time (19.02.2014).
The following corrections are applied:
●
Atmospheric delays are set to the values retrieved form the
SBAS ionospheric correction data
("Atmospheric" > Import Grid
●
Satellite biases (pseudorange biases, clock biases and satel-
lite orbit errors) of each PRN are set to the values retrieved form
the SBAS fast and long-term correction data.
("Pseudorange Errors" >
This mode can be used if your test scenario requires realistic GNSS
signal or you need to reproduce a historical situation. If the receiver
under test does not support SBAS, this mode can lead to positioning
errors and degraded performance compared to the non-augmented
case.
You can load predefined or user-defined *.nstb or *.ems files.
The SBAS navigation massage, including all types of correction data
are configurable. You can also define which SBAS messages are
used and how they are scheduled.
Corrections are real data, downloaded form the SBAS server. How-
ever, these corrections do not match the simulated orbit and
clock parameters or the used ionospheric model.
on page 275
= "From SBAS")
Error Mode = "From SBAS")
Settings..................................................... 143
Settings..................................... 144
SBAS Corrections
SBAS Settings
142