Spectra Precision ProFlex 800 Web Server - Manual (Page 21)

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• Set the GNSS antenna parameters:
– Reference Position: Specify the physical point on the
rover system for which the receiver will accurately
compute RTK positions. The three possible choices
are: Antenna L1 phase center, Antenna Reference
Point (ARP) or Ground Mark.
– Measurement Type: Specify the method that was used
when setting up the rover system to measure the height
of the GNSS antenna (Vertical or Slant Height).
– Antenna Height: Value of rover antenna height,
expressed in the selected distance unit, as measured
according to the specified measurement method.
– Receiver Antenna: Specify the model of GNSS antenna
used by the receiver. Select “UNKNOWN” if you don’t
know which model is used.
– Antenna Radius: In case of a “Slant Height”
measurement, enter the antenna radius (this is a
manufacturer specification), taking care to enter this
parameter in the selected distance unit. See also the
diagram and table below for more information.
– SHMP Offset: In case of a “Slant Height” measurement,
enter the SHMP offset (this is a manufacturer
specification) taking care to enter this parameter in the
selected distance unit. See also the diagram and table
below for more information.
NOTE: The Antenna Radius and SHMP Offset fields are
automatically preset to the right values when you
select an antenna type in the
Receiver Antenna field.
– Virtual Antenna: This option is useful when the rover is
also used to log raw data. In this case, you can specify
Antenna Model P/N Antenna Radius (m) SHMP Offset (m)
ASH-661
ASH-660 802135
802133
0.0953 0.0483
MAG111406 111406 0.0921 0.0516
ARP
SHMP Offset
Antenna radius
SHMP