).
Two trajectory file types are supported:
RSG Trajectories
Even if the RSG Option (OPT-RSG) is not installed on your GSG, and you can therefore not
run scenarios in real time, you can still use the Orolia-proprietary RSG format by up-loading
RSG trajectories onto your GSG unit. The RSG format is further described under
Command Reference" on page 332
.
NMEA Trajectories
It is also possible to use custom trajectories in the NMEA format (as generated with the
help of Orolia's
GSG StudioView
software, or created otherwise) by uploading the NMEA
trajectory to your GSG from a Windows PC.
Note:
As of firmware version 3.0, Orolia GSG series simulators support
10 Hz NMEA data.
GSG will transform the first
timestamp
in the NMEA trajectory so as to adjust it to fit the
scenario start-time and start position. Hence, the start time for the scenario does not need
to match NMEA time-stamp. All other timestamps in the NMEA trajectory will be trans-
formed accordingly, thus keeping the relative position/times in the NMEA trajectory intact.
A given NMEA trajectory can be
replayed
in any GPS time frame, utilizing any earth
coordinates by specifying the desired start time and start position in the scenario.
Looping trajectories
The NMEA trajectory files can be configured either to be executed once, or to loop
repeatedly throughout the scenario execution. For the looping to be allowed, the NMEA
trajectory has to be continuous, meaning the first and last specified coordinates of the tra-
jectory must be identical (see also:
).
RMC vs. GGA
GSG-5/6 Series GNSS Simulator's accept NMEA streams containing any set of valid NMEA
sentences, yet only information from RMC and/or GGA sentences will be used to build the
trajectory (for detailed information on GGA and RMC, purchase the NMEA 0183 through
, or see e.g.,
). Either RMC messages, or GGA messages are accepted, or a
combination of both. The latter is preferable. All other types of sentences are ignored
without user notification.
All NMEA sentences – i.e. all characters between the start marker (‘$’) and the checksum
(‘*’ plus two hex digits) – are validated for correct syntax. The only accepted error is an
3.5 "Select" Menu
User Manual GSG-5/6 Series Rev. 27
45
Summary of Contents for GSG-5 Series
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