ashtech HDS800, Справочное руководство

Страница: 512 / 678

496
Query Command Library
GRS: GNSS Range Residuals
Function
This command is used to output a GRS message containing
the satellite range residuals. The message is output on the
port on which the query is made. No message will be output
if there is no position computed.
Command Format
Syntax
$PASHQ,GRS[*cc]
Response Format
Syntax
$--GRS,m1,d2,n(f3)*cc
Parameters
Example
$PASHQ,GRS
$GNGRS,141003.50,1,1.14,-0.48,0.26,0.20,-0.94,-0.28,-1.18*61
$GNGRS,141003.50,1,-0.20*4F
See also
$PASHS,NME
Automatic Output
of GRS Messages
This is a reminder on how to output GRS messages at regular
intervals of time: Use the $PASHS,NME command with the
syntax below:
$PASHS,NME,GRS,<port_ID>,ON,<Rate>
Parameter Description Range
“$--GRS”
Header
$GPGRS: Only GPS satellites are used.
$GLGRS: Only GLONASS satellites are used.
$GNGRS: Several constellations (GPS, SBAS,
GLONASS) are used.
$GPGRS,
$GLGRS,
$GNGRS
m1 Current UTC time of GGAposition (hhmmss.ss)
000000.00-
235959.99
d2 Mode used to compute range residuals Always “1”
f3
Range residual for satellite used in position com-
putation (repeated “n” times, where n is the num-
ber of satellites used in position computation).
Residuals are listed in the same order as the sat-
ellites in the GSV message so that each residual
provided can easily be associated with the right
satellite.
±999.999
*cc Checksum *00-*FF