Perturbations and Errors Simulation
Satellite Navigation
106
User Manual 1178.6379.02 ─ 01
12.1.5 Errors Compensation
SBAS corrections can be activated for
error compensation
. If any of the SBAS sys-
tems is activated, the required corrections are calculated and can be applied automati-
cally.
Alternatively, if the SBAS corrections are used as
error source
, the errors are indica-
ted on each SV by keyword "From SBAS". The errors are internally simulated through
pseudorange errors. The broadcast navigation message cannot be edited; additional
deviations cannot be simulated.
For details on the SBAS correction modes, see
12.2 Atmospheric Effects and Ionospheric Errors Settings
Access:
1. Select "Simulation Configuration" >
"Atmosphere"
.
2. Set the tropospheric and ionospheric models.
For example, select "Ionospheric Model > NeQuick".
The atmospheric configuration comprises the parameters for adjusting the iono-
spheric and tropospheric models of the simulation. The selected model describes
the actual
ionospheric and tropospheric models used in the satellite-receiver
channel simulation
.
3. To configure the ionospheric navigation parameters that define what the satellites
are transmitting as
ionospheric correction parameters
, set the ionospheric
parameters on the navigation message of the particular GNSS system:
a) Select "Simulation Configuration > Satellites > GNSS system > SV# > SV Con-
fig > Signals Configuration".
Ionospheric parameters are read-only and common for all SV of one GNSS
system. To change them, apply the same configuration to all SVs.
b) Select "SV# > SV Config" >
"Copy Modulation Control to SVI-ID = All"
.
c) Select
"Nav Msg Control > Edit"
.
Atmospheric Effects and Ionospheric Errors Settings