JRC JLR-21, Instruction Manual

Page: 138 / 164

Appendix 2-8
 GST - GNSS pseudorange noise statistics
Version 2.1, 2.3 only
$GPGST,hhmmss.ss,xxxx.x,xxxx.x,xxxx.x,xxx,xxxx.x,xxxx.x,xxxx.x*hh<CR><LF>
1 2 3 4 5 6 7 8 9
1: UTC time of the GGA or GNS fix associated with this sentence
2: RMS value of the standard deviation of the range inputs to the navigation
process. (m)
Range inputs include pseudoranges and DGPS corrections
3: Standard deviation of semi-major axis of error ellipse, (m)
4: Standard deviation of semi-minor axis of error ellipse, (m)
5: Orientation of semi-major axis of error ellipse, (degrees from true north)
6: Standard deviation of latitude error, (m)
7: Standard deviation of longitude error, (m)
8: Standard deviation of altitude error, (m)
9: Checksum
 GLL - Geographic position – latitude/longitude
Version 1.5
$GPGLL,ddmm.mm,a,dddmm.mm,a<CR><LF>
1 2 3 4
Version 2.1
$GPGLL,ddmm.mmmm,a,dddmm.mmmm,a,hhmmss.ss,A*hh<CR><LF>
1 2 3 4 5 6 7
Version 2.3
$GPGLL,ddmm.mmmm,a,dddmm.mmmm,a,hhmmss.ss,A,x*hh<CR><LF>
1 2 3 4 5 6 7 8
1, 2: Latitude (deg, min), N / S
3, 4: Longitude (deg, min), E / W
5: UTC of position (1/100 sec fixed at 00) (Version 2.1)
5: UTC of position (1/100 sec) (Version 2.3)
6: Status
A=data valid
V=data invalid
7: Checksum (Version 2.1)
7: Mode indicator (Version 2.3)
A = Autonomous
D = Differential
N = Data not valid
S = Simulator
8: Checksum (Version 2.3)
Note For version 1.5, when not performing positioning, outputs last measured position data.
For version 2.3, when not performing positioning, outputs last measured position data, and
time.
For version 2.3, when power is turned on, or master reset is performed, the initial time, and
position settings are NULL.