Klobuchar Parameters - R&S SMW-K44 User Manual

Satellite Navigation
"MOPS-DO-229D"
Remote command:
[:SOURce<hw>]:BB:GNSS:ATMospheric:IONospheric:MODel
Klobuchar Parameters ← Atmosphere
The Klobuchar model assumes that the vertical delays are constant values at night
time and follow a half-cosine function in daytime, see
Figure 12-3: Klobuchar ionospheric model
The amplitude and the period of this function depend on the receiver location and are
calculated from the eight broadcast coefficients "alpha_0 to alpha_3" and "beta_0 to
beta_3". These coefficients are included in the navigation message of the simulated
satellites.
User Manual 1178.6379.02 ─ 01
Atmospheric Effects and Ionospheric Errors Settings
The minimum operational performance standard (MOPS) is a model
used by the SBAS systems and based on a mapping function or wet
and dry troposphere.
See "MOPS-DO-229D"
Perturbations and Errors Simulation
on page 110.
Figure 12-3.
on page 250
109