Spectracom GSG-5 series, User Manual With Scpi Manual

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By specifying the Elevation mask , you define the satellite-in-view cut-off range. All satel
lites which are below this range will be dropped off and replaced with better/higher
satellite (if available). For more information, see "Elevation mask" on page 56.
You may also add Interference signals and Multipath signals to the scenario. The max
imum number of Interference/Multipath signals is 8.
Interference signals are used to degrade the reception of GNSS receivers. To add an
Interference signal, click . To add a signal, use default values or specify Interference
signal parameters by expanding the list. You may also collapse or expand all items by
clicking on the closed book or open book icon, respectively. To delete an Interference or
Multipath signal, click .
Navigation tab
Under the
Navigation
tab, you link files that describe the trajectory, events, environment,
vehicle model and navigation data to your scenario:
Any user trajectory can be simulated using the GSG. You can choose to use one of the
built-in trajectories or upload a trajectory file created in the Trajectory Editor or RSG
Trajectory Editor of StudioView. To select one of
built- in trajectories, click on Circle,
Static, 3GPP and set up parameters if needed.
To attach a pre-installed trajectory or your own trajectory to the scenario, click File and
pick a trajectory file from the dropdown menu. To add your own trajectory file to this
dropdown list, you have to create a new trajectory first and then save it in the repos
itory.
An Events file describes some specified events during scenario execution. To create
events file, see "Defining Events in StudioView" on page 147.
Support for environmental or vehicle models in GSG simulators is via compressed key
hole markup language files (kmz) popularized by Google Earth. A simple way to create
these files is with the tool SketchUp available from Trimble
®
Navigation, see
https://www.sketchup.com/
.
An Environment model is a 3D model of the environment, describing terrain, buildings,
etc. All environment models used must have a ‘geo-location’ added to them before they
can be used by in simulation. Environmental Modeling is used first and foremost to sim
ulate urban canyons, or tunnels. You can create blocks, representing build
ings/obstructions, and place them on the map along the trajectory. The power level of
the satellites will be blocked or reduced in the vicinity of the buildings due to the obstruc
tion of the line of sight near these virtual buildings.
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User Manual GSG-5/6 Series Rev. 26
4.9 Studioview Tasks