Reference Manual Instruction Manual

Using the Web Server

– 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 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 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 used to emulate a GNSS

antenna other than the one really used.

Choosing a virtual antenna different from the one really

used affects the raw and differential data as if they had

been collected by the virtual antenna, instead of the

real one.

A virtual antenna is needed at a base when rovers from

different GNSS manufacturers cannot operate from

that base because of the unknown model of GNSS

antenna used by the base. In that case, defining a

virtual antenna at the base will solve the problem. One

of the most frequently used virtual antennas is the

universal ADVNULLANTENNA antenna.

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