Jackson Labs Micro-JLT GNSS, Руководство пользователя

Страница: 24 / 83

Micro-JLT GNSS™ User Manual
18 © 2019 Jackson Labs Technologies, Inc.
This command has the following format:
GPS:GPRMC <int> [0,255]
The GPRMC string has the following data format:
$GNRMC,hhmmss.00,s,llll.llll,S/N,yyyyy.yyyy,W/E,k.k,d.d,ddmmyy,,,m*[checksum]
The RMC output message header includes the talker ID for the currently enabled GNSS system or
systems as described in Section
3.3.4 .
3.3.9 GPS:GPGSA <int> [0,255]
This command instructs the Micro-JLT GNSS™ to send the NMEA standard GSA message every N
seconds, with N in the interval [0,255]. The command is disabled until the GNSS receiver achieves a
first fix.
This command has the following format:
GPS:GPGSA <int> [0,255]
The GPGSA string has the following data format:
$GNGSA,a,a,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x.x,x.x,x.x*[checksum]
The GSA output message header includes the talker ID for the currently enabled GNSS system or
systems as described in Section
3.3.4 .
3.3.10 GPS:GPGSV <int> [0,255]
This command instructs the Micro-JLT GNSS™ to send the NMEA standard GSV message every N
seconds, with N in the interval [0,255]. The command is disabled until the GNSS receiver achieves a
first fix.
This command has the following format:
GPS:GPGSV <int> [0,255]
The GPGSV string has the following data format:
$GPGSV,x,x,ss,nn,ee,aaa,ss,...*[checksum]
$GAGSV,x,x,ss,nnn,ee,aaa,ss,...*[checksum]
A separate set of GSV messages are output for each talker ID for the currently enabled GNSS
systems as described in Section
3.3.4 . Please note that due to the large number of GNSS satellites
that can be tracked in this unit, more than the customary four GSV messages can be sent once per
second. With multiple GNSS systems enabled, a typical sky view may generate up to six GSV
messages per second per talker ID.
3.3.11 GPS:XYZSPeed <int> [0,255]
This command is a 3D velocity vector output command. Enabling this command will output a 3
dimensional velocity vector indicating the unit’s speed in centimeters per second in the ECEF
coordinate system.