gps_antenna_height height_offset m selection_criteria
The gps_antenna_height command is used apply an antenna height to GX (GNSS coordinates) or GB (GNSS baseline) observations. Observations can be selected based upon observation type, observation date, stations used, and observation classifications.
The antenna height is applied by adding it to the instrument/target height.
Warning: if more than one gps_antenna_height command could apply to an observation, then the heights will be cumulated into the instrument/target height.
This command is intended to provide a way of testing antenna height errors. Note that a reweight_observations command specifying an uncertainty in the height information for an observation may sometimes be more appropriate.
The height_offset value is the offset that is applied in metres.
The selection_criteriai> are the same as defined in the reject_observations command.
An example of a gps_antenna_height command is:
gps_antenna_height 0.25 data_file=obs220901.snx