ashtech DG16 - GSV: Satellites in View

NMEA Commands 247
NMEA Commands
Typical GST message:
$GPGST,130927.00,18.45,,,,17.78,11.74,28.68*71
Table 8.19 outlines the response message.
GSV: Satellites in View
$PASHS,NME,GSV,x,c,[f]
This command allows you to enable or disable the GSV response message on the
output port x, where c is ON or OFF, and f is the optional message output rate
ranging from 0.05 to 999 seconds depending on the measurement update rate
option installed.
If the command is set without a period, the DG16 uses the period set by the
$PASHS,NME,PER command If the $PASHS,NME,PER command is issued after
this message period has been set, the period resets to the PER setting.
f6 Standard deviation of latitude error (meters) 0.00 to 99.99
f7 Standard deviation of longitude error (meters) 0.00 to 99.99
f8 Standard deviation of altitude error (meters) 0.00 to 99.99
*hh Checksum 2-character hex
Table 8.19. Typical GST Message
Field Description
$GPGST Header
130927.00 UTC time of the position fix
18.45 RMS value of the standard deviation of satellite range inputs
(1sigma position error)
empty field This field is not implemented
empty field This field is not implemented
empty field This field is not implemented
17.78 Standard deviation of the latitude error (meters)
11.74 Standard deviation of the longitude error (meters)
28.68 Standard deviation of the altitude error (meters)
*71 Checksum
Table 8.18. $GPGST Message Format
Parameter Description Range