3 Command Line Reference
sim
gim
setIonosphereModel
getIonosphereModel
Model
auto
off
Klobuchar
SBAS
MultiFreq
KlobucharBeiDou
RxControl: Navigation > Receiver Operation > Position > Atmosphere
Use these commands to define/inquire the type of model used to correct ionospheric errors
in the PVT computation. The following models are available:
Model
Description
auto
With this selection, the receiver will, based on the available in-
formation, automatically select the best model on a satellite to
satellite basis.
off
The receiver will not correct measurements for the ionospheric
delay. This may be desirable if the receiver is connected to a
GNSS signal simulator.
Klobuchar
This model uses the parameters as transmitted by the GPS satel-
lites to compute the ionospheric delays.
SBAS
This model complies with the DO229 standard: it uses the near
real-time ionospheric delays transmitted by the SBAS satellites
in MT18 and MT26. If no such message has been received, the
Klobuchar
model is selected automatically.
MultiFreq
This model uses a combination of measurements on different
carriers to accurately estimate ionospheric delays. It requires
the availability of at least dual-frequency measurements.
KlobucharBeiDou
This model uses the parameters as transmitted by the BeiDou
satellites to compute the ionospheric delays.
Unless the model is set to
auto
, the receiver uses the same model for all satellites, e.g. if the
Klobuchar
model is requested, the Klobuchar parameters transmitted by GPS satellites are
used for all tracked satellites, regardless of their constellation.
If not enough data is available to apply the prescribed model to a given satellite (for instance
if only single-frequency measurements are available and the model is set to
MultiFreq
),
the satellite in question will be discarded from the PVT. Under most circumstances, it is rec-
ommended to leave the model to
auto
.
Examples
To disable the compensation for ionospheric delays, use:
COM1>
sim, off <CR>
$R: sim, off
IonosphereModel, off
COM1>
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Summary of Contents for PolaRx5TR
Page 1: ...PolaRx5TR Reference Guide Applicable to version 5 5 0 of the Firmware ...
Page 73: ...3 Command Line Reference Chapter 3 Command Line Reference 73 ...
Page 130: ...3 Command Line Reference COM1 gim CR R gim IonosphereModel off COM1 130 ...
Page 237: ...3 Command Line Reference COM1 237 ...
Page 279: ...3 Command Line Reference COM1 279 ...
Page 294: ...4 SBF Reference Chapter 4 SBF Reference 294 ...