This command creates a duplicate of the satellite in given channel number (the second argument) using the provided multipath parameters. The parameters include the Duplicate Satellite Channel Number, Range Offset, Range Change, Range Interval, Doppler Offset, Doppler Change, Doppler Interval, Power Offset, Power Change and Power Interval.
When the scenario is running, the optional argument n can be used to specified the target channel where the duplicate will be placed. If the target channel already contains a satellite, that satellite is disabled and replaced by the duplicate.
Multipath satellites require 60 seconds to be created and are introduced at modulo 30 second intervals. The GSG can only introduce 4 duplicate satellites at a time and at a maximum rate of one satellite every two seconds. Multipath, SBAS and interference/jamming channels cannot be the duplicated. Note that excessive changes to Range or Doppler may result in Doppler shifts greater than the system can handle and cause the satellites to shutdown due to exceeding the hardware capabilities.
The command can also be used to alter multipath configuration settings before the scenario has started. The argument n is then mandatory and specifies which multipath configuration is changed. For the command to be successful the scenario configuration must have at least n number of multipath signals defined. Furthermore, the scenario must be started using the
SCPI Scenario:Control Start command for the modification to be effective, i.e. the altered configuration will not be used if the scenario is started from the front panel. Note also that the changed configuration will not be saved to the scenario configuration file.
TIME – As TIME argument only IMMediate is supported.
Integer [1:N] – Satellite index of the satellite to duplicate. Maximum is number of satellites
Decimal [-999.999,999.999] – Range offset in meters
Decimal [-99.99,99.99] – Range Change rate in meters/interval
Decimal [0.0,600.0] – Range Interval in seconds
Decimal [-99.9999,99.9999] – Doppler offset in meters
Decimal [-99.9999,99.9999] – Doppler Change rate in meters/sec/interval
Integer [0,600] – Doppler Interval in seconds
Decimal [-30.0,6.0] – Power offset in meters
Decimal [-30.0,0.0] – Power Change rate in dB/interval
Integer [0,600] – Power Interval in seconds