ashtech HDS800, Reference Manual

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Set Command Library
ANP,OUT: Defining a Virtual Antenna
Function
This command allows you to specify the name of an antenna
that raw data will be adjusted to. By specifying the name of
a virtual antenna, you ask the receiver to correct (“reduce”)
the raw and differential data it generates from the received
GNSS signals to make them available as if they had been
received through
that antenna.
Command Format
Syntax
$PASHS,ANP,OUT,s1[*cc]
Parameters
Examples
Setting the ADVNULLANTENNA as the virtual antenna:
$PASHS,ANP,OUT,ADVNULLANTENNA*73
Disabling the use of the virtual antenna:
$PASHS,ANP,OUT,OFF*2B
Comments
• By default, the receiver observables are not corrected for
the type of GNSS antenna used. It’s only by providing
separately the name of the GNSS antenna used (declared
as the OWN antenna) that the antenna corrections can be
performed when processing the receiver observables. Now
precisely, the ANP,OUT command allows you to directly
generate the raw and differential observables for the type
of antenna you specify in the command (e.g.
ADVNULLANTENNA).
• Be aware that the raw data reduction process is possible
only if the name of the antenna physically used by the
receiver has been specified through the $PASHS,ANP,
OWN command and declared in the receiver’s antenna
database as one of the default or user-defined antennas.
Otherwise, the command will be NAKed.
• Raw data reduction will not be performed on data from any
satellite located below the elevation mask.
Parameter Description Range
s1
Virtual antenna name (case-sensitive) or
“OFF” to specify that no virtual antenna is
used.
31 characters max.
or OFF
*cc Optional checksum *00-*FF