ashtech DG16 - USP: Satellites Used in Position Computation

Receiver Commands 179
Receiver Commands
$PASHS,USE,ALL,c1
This command includes or excludes all GPS satellites simultaneously, where c1 is
Y (include) or N (exclude). In a case where several satellites were excluded from
being tracked, this shortcut command once again includes all satellites for tracking
instead of constructing a lengthy command to re-enable those specific satellites for
tracking.
To enable or disable the tracking of all SBAS satellites, use the $PASHS,USE,SBA
command. See USE: SBAS Satellites for Acquisition section on page 313 for a
description of this command.
USP: Satellites Used in Position Computation
$PASHS,USP,d1,c2
This command selects specific satellites to be used in computing positions, where
d1 is the satellite PRN number (01 to 32 for GPS and 120 to 137 for SBAS) or ALL
(all satellites simultaneously) and c2 is Y (include) or N (exclude).
Example
Enter the following command to exclude PRN 4 from being used in position
computation:
$PASHS,USP,4,N
To enable or disable all SBAS satellites in the position solution, use the
$PASHS,USP,SBA command. SeeUSP: SBAS Satellites Used in Position
Computation section on page 313 for a description of this command.
UTS: Synchronize with GPS Time
$PASHS,UTS,s
This command enables (s=ON) or disables (s=OFF) a mechanism that
synchronizes measurements and coordinates with GPS system time rather than
with local (receiver) clock. The calculated pseudo-ranges do not depend upon the
receiver clock stability. This mode simulates a configuration where the receiver has
a quartz oscillator with very high stability and is synchronized with GPS. Default is
OFF.
DEFAULT SETTING
USP—All satellites included for position computation