Orolia GSG-5 Series, User Manual With Scpi Manual, Page: 87 / 392

Environment Open sky limit Obstruction limit NLOS probability
Suburban 40° 30° 0.2
Urban 60° 40° 0.3
The Propagation environment model is taken into use by setting an event
scenario
propenv
. If stated without parameters, the default parameter values given above will be
used. In this case the format of the even line is:
TIME scenario propenv {open|rural|suburban|urban}
Note: For more information on Event simulation , see "Event Data" on
page 54 .
Alternatively, parameter values can be provided in the format:
TIME scenario propenv {rural|suburban|urban} OPENSKYLIMIT
OBSTRUCTIONLIMIT NLOSPROBABILITY
Example
0.0 scenario propenv suburban
300.0 scenario propenv urban
600.0 scenario propenv urban 90.0 60.0 0.75
The example event file above will create a simulation starting from sub-urban environment
(default parameters). After five minutes the simulation changes to an urban environment
(default parameters) and after ten minutes to a highly obstructed urban environment
where open sky satellites do not exist (open sky limit at 90 degrees), and satellites below
60 degrees elevation are likely to be NLOS (NLOS probability 0.75).
The Propagation environment model can be defined in the scenario configuration by using
the Scenario editor in
StudioView .
The Propagation environment model can also be set by using the corresponding SCPI com-
mands (see
"SOURce:SCENario:PROPenv" on page 265 ).
When using the Propagation environment model, note that:
It takes 1 minute to create multipath taps during simulation. Therefore the time inter-
val between switching the environment model should be more than one minute.
The Event
scenario propenv
must be stated without parameters, or alternatively
with all three parameters specified.
3.5 "Select" Menu
User Manual GSG-5/6 Series Rev. 27 71