ashtech DG14, Reference Manual

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130 DG14 and DG16 Board & Sensor Reference Manual
specified coordinates and sigmas. The Kalman filter uses the KPI settings only once
for initialization, so you can safely to move in a few seconds after issuing this
command.
LGS: Grid to Grid Transformation
$PASHS,LGS,s1
This command selects the UG4 grid to grid transformation (UG4) or no grid to grid
transformation (NON) where s1 is UG4 or NON.
Example
Enter the following command to set the grid to grid transformation to UG4.
$PASHS,LGS,UG4
LPS: Third-Order Loop Tracking Parameters
$PASHS,LPS,d1,d2,d3
This command sets third-order loop tracking parameters to optimize loop tracking
performance for a specific application, where d1 is the ratio of the carrier loop
, d2
is the carrier loop parameter, and d3 is the code loop parameter. The carrier and
code loop parameters are set independently. The DG16 uses default loop tracking
values until new parameters are set through this command. Loop tracking
parameters set through this command are saved in battery-backed memory and
used until new settings are selected, battery-backed memory is cleared, or the RST
command is issued to the receiver.
The loop tracking parameters are applied to all GPS channels and both SBAS
channels.
IWe recommend that you use the $PASHS,DYN commane (see 110) instead of $PASHS,LPS.
$PASHS,LPS is described in this manual for backward compatibility only.
Example
Enter the following command to set loop tracking parameters for a low-dynamic
application:
$PASHS,LPS,1,2,2
DEFAULT SETTING
LGS—NON