GPGLL
Geographic position
|
Platform: |
OEM719, OEM729, OEM7500, OEM7600, OEM7700, OEM7720, PwrPak7, CPT7, CPT7700, SMART7, SMART2 |
This log contains latitude and longitude of present vessel position, time of position fix and status.
Table: Position Precision of NMEA Logs compares the position precision of selected NMEA logs.
The GPGLL log outputs these messages without waiting for a valid almanac. Instead, it uses a UTC time, calculated with default parameters. In this case, the UTC time status (see the TIME log) is set to WARNING since it may not be one hundred percent accurate. When a valid almanac is available, the receiver uses the real parameters. Then the UTC time status is set to VALID.
If the NMEATALKER command is set to AUTO, the talker (the first 2 characters after the $ sign in the log header) is set to GP (GPS satellites only), GL (GLONASS satellites only), GA (Galileo satellites only), GQ (for QZSS satellites only), GB/BD (for BeiDou satellites only) or GN (satellites from multiple systems).
The position for the GPGLL log is reported in the user selected datum. See the DATUM command for more details.
Message ID: 219
Log Type: Synch
Recommended Input:
log gpgll ontime 1
Example 1 (GPS only):
$GPGLL,5109.0262317,N,11401.8407304,W,202725.00,A,D*79
Example 2 (Multi-constellation):
$GNGLL,5109.0262321,N,11401.8407167,W,174738.00,A,D*6B
See the Note in the GPGGA log that applies to all NMEA logs.
|
Field |
Structure |
Description |
Example |
|
1 |
$GPGLL |
Log header |
$GPGLL |
|
2 |
lat |
Latitude (DDmm.mm) |
5106.7198674 |
|
3 |
lat dir |
Latitude direction (N = North, S = South) |
N |
|
4 |
lon |
Longitude (DDDmm.mm) |
11402.3587526 |
|
5 |
lon dir |
Longitude direction (E = East, W = West) |
W |
|
6 |
utc |
UTC time status of position (hours/minutes/seconds/decimal seconds) |
220152.50 |
|
7 |
data status |
Data status: A = Data valid, V = Data invalid |
A |
|
8 |
mode ind |
Positioning system mode indicator, see Table: NMEA Positioning System Mode Indicator |
A |
|
9 |
*xx |
Check sum |
*1B |
|
10 |
[CR][LF] |
Sentence terminator |
[CR][LF] |
|
NMEA Log |
Latitude |
Longitude |
Altitude |
|
GPGGA |
4 |
4 |
2 |
|
GPGGALONG |
7 |
7 |
3 |
|
GPGLL |
7 |
7 |
N/A |
|
GPRMC |
7 |
7 |
N/A |
|
Mode |
Indicator |
|
A |
Autonomous |
|
D |
Differential |
|
E |
Estimated (dead reckoning) mode |
|
M |
Manual input |
|
N |
Data not valid |