Jackson Labs Mini-JLT GNSS, Руководство пользователя

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Mini-JLT GNSS™
User Manual
To simultaneously support all available GNSS systems, the following PRN numbering scheme
modified from the traditional NMEA standard is being used:
3.3.9 GPS:XYZSPeed
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.
X, Y, and Z speed are individually given, and are independent of each other. An accuracy estimate in
centimeters per second is also given. The velocity data is time-stamped using the time-of-week with
a resolution of milliseconds.
Additionally, the number of accrued Leapseconds is indicated in this message, which allows proper
calculation of GPS time from UTC time as indicated by other messages, as well as proper handling
of Leapsecond events.
Use the following format to generate the velocity vector every N seconds, with N in the interval
[0,255]:
GPS:XYZSPeed <int> [0,255]
3.3.10 GPS:GPZDA
This command instructs the Mini-JLT™ to send the NMEA standard string $GPZDA 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:GPZDA <int> [0,255]
3.3.11 GPS:PASHR
The NMEA string $PASHR,POS has been added for compatibility to legacy GPS hardware. The
PASHR command alongside the GPZDA command will give all relevant parameters such as time,
GNSS Type SV Range GPGSV PRN vehicle
numbering
GPS G1-G32 1-32
SBAS S120-S158 33-64,152-158
Galileo E1-E36 301-336
BeiDou B1-B37 401-437
IMES I1-I10 173-182
QZSS Q1-Q5 193-197
GLONASS R1-R32, R? 65-96,0