JRC JLR-21, Instruction Manual

Page: 135 / 164

Appendix 2-5

GBS - GNSS satellite fault detection
Version 2.1, 2.3 only
$GPGBS,hhmmss.ss,uxxx.x,uxxx.x,uxxx.x,xx,x.xxxxx,uxxxx.x,xxxx.x*hh<CR><LF>
1 2 3 4 5 6 7 8 9
IEC
$GPGBS,hhmmss.ss,uxxx.x,uxxx.x,uxxx.x,xx,x.xxxxx,uxxxx.x,xxxx.x,1,1*hh<CR><LF>
1 2 3 4 5 6 7 8 9 10 11
1: UTC time of the GGA or GNS fix associated with this sentence
2: Expected error in latitude (m)
3: Expected error in longitude (m)
4: Expected error in altitude (m)
5: ID number (see Note 1) of most likely failed satellite
GPS: 1-32
SBAS satellites 120 to 138 are represented by 33 to 51.
33 to 64 are reserved for SBAS satellite use.
6: Probability of missed detection for most likely failed satellite
(0.00000 to 1.00000)
7: Estimate of bias on most likely failed satellite (m)
8: Standard deviation of bias estimate (m)
9: Checksum (Version 2.1,2.3)
9: GNSS System ID 1: fixed
10: GNSS Signal ID 1: fixed
11: Checksum
 GNS - GNSS fix data
Version 2.3 only
$GPGNS, hhmmss.ss,ddmm.mmmm,a,dddmm.mmmm,a,x,xx,xx,uxxxx,uxxx,xx,xxxx*hh<CR><LF>
1 2 3 4 5 6 7 8 9 10 11 12 13
IEC
$GPGNS, hhmmss.ss,ddmm.mmmm,a,dddmm.mmmm,a,x,xx,xx,uxxxx,uxxx,xx,xxxx,a*hh<CR><LF>
1 2 3 4 5 6 7 8 9 10 11 12 13
14
1: UTC of position (1/100 sec)
2, 3: Latitude (deg, min), N / S
4, 5: Longitude (deg, min), E / W
6: Mode
indicator
N = No fix. Satellite system not used in position fix, or fix not valid.
A = Autonomous. Satellite system used in non-differential mode in position fix.
D = Differential. Satellite system used in differential mode in position fix.
S = Simulator mode.
P = SBAS (IEC only)
7: Total number of satellites in use
8: HDOP (0 - 20)
9: Antenna altitude, m, mean-sea-level (geoid)
10: Geoidal separation, m
11:
Age of differential data (NULL if not performing DGPS positioning)
12: Differential reference station ID (NULL if not performing DGPS positioning)
13: Checksum (Version 2.3)
13: Navigational
Status indicator
S = Safe
C = caution
U = Unsafe
V = Not valid
14: Checksum
Note When not performing position fixing, outputs last measured position data, and time.
When power is turned on, or master reset is performed, the initial time, and position settings
are NULL