Perturbations And Errors Simulation; About The Errors Sources - R&S SMW-K44 User Manual

Satellite Navigation

12 Perturbations and Errors Simulation

Section
ronment effects on the position accuracy.
Real receivers experience also signal errors caused by satellite orbit and clock errors,
that remain non-corrected despite the corrections in the broadcasted navigation mes-
sage. To simulate even more challenging conditions, you can add deliberate signal
errors by manipulating the navigation messages of the satellites.
Signal errors of any kind have a direct impact on the receiver's positioning accuracy.

12.1 About the Errors Sources

You can observe the effect of the following common error sources on the receiver's
positioning accuracy:
●
Atmospheric (ionospheric and tropospheric) errors
See:
–
–
●
Difference between the atmospheric condition at the ground station and the
receiver, simulated as difference in the simulated ionospheric model and the
broadcasted ionospheric parameters in the navigation message
See
message parameters"
●
Pseudorange errors
See
●
Satellite orbit and orbit perturbation errors (ephemeris errors)
See:
–
–
●
Satellite clock and time conversion errors, like system time drifts due to difference
in the time conversion sets
See:
–
–
User Manual 1178.6379.02 ─ 01
Real-World Environment
Chapter 12.1.1, "About the Atmospheric
Chapter 12.2, "Atmospheric Effects and Ionospheric Errors
on page 106.
"Errors are deviations between the simulated and broadcasted navigation
on page 105
Chapter 12.3, "Pseudorange Errors
Chapter 12.1.2, "About Orbit and Orbit Perturbation Parameters and
on page 102.
Chapter 12.4, "Orbit and Orbit Perturbation Errors
Chapter 12.1.3, "About Clock and Time Conversion Parameters and
on page 104.
Chapter 12.6, "Time Conversion Errors
Perturbations and Errors Simulation
deals with the impact of the multipath and other envi-
Effects",
Settings", on page 114.
Settings",
About the Errors Sources
on page 102.
Settings",
Errors",
Settings", on page 117.
Errors",
on page 127.
101