Chapter 11
KGP-920
Technical Reference
Description Contents of data field
GPS satellite fault detection
GPGBS
GPS fix data
GPGGA
Geographic position (LORAN-C)
Start of sentence
$ GP GBS, hhmmss.ss, x.x, x.x, x.x, x.x, x.x, x.x, x.x *hh<CR><LF>
Talker device
Sentence type
UTC time of the GGA or GNS fix associated with this sentence
Expected error in latitude
Expected error in longitude
Expected error in altitude
ID number of most likely failed satellite
Probability missed detection for most likely failed satellite
Estimate of bias on most likely failed satellite
Standard deviation of bias estimate
$ GP GGA, hhmmss.ss, lllll.lll, a, yyyyy.yyy, a, x, xx, x.x, x.x, M, x.x, M,
Sentence type
Talker device
Latitude,
N/S
Start of sentence
UTC of position fix
(hr/min/sec)
Longitude,
E/W
GPS quality indicator
0: Fix not available or invalid
1: GPS fix valid
2: DGPS fix valid
Antenna altitude, m
HDOP value
Number of satellites in use, 00-12,
Age of differential data (sec)
Differential reference station ID
Geoidal separation, m
xxx, xxxx*hh<CR><LF>
GPGLC
$ GP GLC, xxxx, x.x, a, x.x, a, x.x, a, x.x, a, x.x, a, x.x, a*hh<CR><LF>
Talker device
Sentence type
GRI, in tens of microseconds
TD1
Master TOA microseconds
Signal status in order of priority
B = blink warning
C = cycle warning
S = SNR warning
A = valid
TD2
TD3
TD4
TD5
Start of sentence
11-4
93121662-00