Advanced Base Station Operation - ashtech GG Surveyor Reference Manual

$PASHS,RTC,TYP,3,1
$PASHS,RTC,TYP,22,1
$PASHS,RTC,TYP,18,1
$PASHS,RTC,TYP,19,1
$PASHS,LPS,1,1,1
$PASHS,SAV,Y
Type 1 and 31 messages are ON by Default.
The receiver is set as a base station which transmits RTCM Differential corrections
(messages 1 and 31) every second, RTCM messages types 18 and 19 every second,
and types 3 and 22 every minute. Following a power cycle it automatically starts
transmitting these messages again (because you have saved the settings with the
$PASHS,SAV,Y command).

Advanced Base Station Operation

Recommended Advanced Parameter Settings for Base Stations
There a many parameters that control the operation of the receiver. Most should be
left at default values, except for the settings identified in Table 5.1, Table 5.2, and
Table 5.3.
Antenna
Locate the antenna with a clear view of the sky.
The antenna position, entered with the $PASHS,POS command, is the WGS84 phase
center of the antenna. If you do not have a surveyed position on which to locate your
antenna you may use the command $PASHS,POS,CUR. This sets the base station
position to the autonomous position calculated by the receiver. The relative accuracy
of the remote receiver positions is the same, with respect to the base station, as if you
had entered the true position of the antenna. The absolute accuracy translates by the
difference between the nominal base station position (from $PASHS,POS,CUR) and
the true WGS84 position. That is, if the nominal base station position is one meter
north of the true position, then all remote positions well be translated north by exactly
one meter. You may check which position was set by using the $PASHQ,RTC
command.
48
Table 5.3: Base Station Commands (continued)
Command
GG Surveyor GPS+GLONASS Reference Manual
Description
Turn on base station position messages, once per
minute
Turn on Code and Carrier phase messages, once
per second
Set loop setting for stationary receiver
Save settings