Orolia GSG-5 Series, Руководство пользователя с руководством по SCPI, Страница: 59 / 392

degrees-minutes-seconds
ECEF
(Earth-Centered, Earth-Fixed) format.
3.5.4 Trajectories
Note: This feature is not available in GSG-51/52/53.
In the context of GNSS testing, a trajectory is the predefined path a receiver is traveling
during the execution of a scenario. GSG-5/6 can be used to simulate virtually any user tra-
jectory. You can:
Use predefined (built-in) trajectories
Modify predefined trajectories (using the GSG unit, or the GSG StudioView soft-
ware)
Create trajectory files in StudioView , and upload them.
Note: If the RSG Option (OPT-RSG) is installed on your unit, you can also
control movement in real-time.
At the start of the scenario the nose of the user is pointing north. The orientation of the
vehicle body changes with movement so that its nose is aligned with the vehicle’s course.
In cases with changing altitude the nose will still point in a horizontal direction, not changing
the body attitude. This default behavior can be changed by using SCPI commands which
change pitch, roll, and yaw of the simulated vehicle.
3.5.4.1 Predefined Trajectories
GSG units come with several built-in trajectories. The exact list of these predefined tra-
jectories varies from GSG model to model. The following is a selection:
Static : The user is not moving, but the latitude, longitude and altitude defined in the
Scenario configuration are used as user position throughout the scenario replay.
3GPP : The user is moving on a rectangluar trajectory as defined in the Technical
Specification 3GPP TS 25 171 V7.1.0, Section 5.5, Table 11 and Figure 1:
3.5 "Select" Menu
User Manual GSG-5/6 Series Rev. 27 43