Download Case K44 Specifications

GPS and Assisted GPS
User Interface
Assistance Data Generation
Changing the ionospheric model has an impact on the satellite's parameters "Time
Shift", "Doppler Shift" and "Duration (Elevation>2.5/5/7.5/10°)".
Parameter
Description
SCPI Command
"alpha_0 .. alpha_3"
Displays the parameter alpha_0 .. alpha_3 of [
​ :​SOURce<hw>]:​BB:​GPS:​
the satellite's navigation message.
SVID<st>:​NMESsage:​
ALPHa<ch0>​ on page 102
"beta_0 .. beta_3"
Displays the parameter beta_0 .. beta_3 of
the satellite's navigation message.
​[:​SOURce<hw>]:​BB:​GPS:​
SVID<st>:​NMESsage:​
BETA<ch0>​ on page 104
3.4 Assistance Data Generation
The "Assistance Data Generation" dialog is only available for instrument equipped with
option Assisted GPS (R&S SMx/AMU-K65).
To access the "Assistance Data Generation" dialog, select "Main Dialog > Simulation
Mode Localization", set the "Localization Mode" to Full Configuration and select "Assistance Data Generation".
The "Assistance Data Generation" dialog is used to generate assistance data files for
Assisted-GPS testing. These files can be formatted into mobile communication's message formats and passed by the protocol tester to the DUT in order to speed up Time To
First Fix (TTFF).
See also ​chapter 2.8.7, "Generating Assistance Data", on page 23.
The upper part of the "Assistance Data Generation" menu is where the "Satellites Configuration" is set. A maximum of 9 satellites can be selected at one time for assistance
data generation.
The middle part of the menu is where the parameters of the "Reference Location" and
"Time Configuration" are set.
Operating Manual 1171.5248.12 ─ 15
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