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109
AT Command Reference Guide of Module Product
ME3630
Message parameters of NMEA output/input:
Field
Example
Contents
Start string
$GPGGA
message identifier
Valid data
<Data>
parameters relating to message
Check code
*check code
The check code contains two ASCII characters (hexadecimal values)
End string
<CR><LF>
Each message ends with<CR> <LF>
Note:
All fields must exist, but the valid data parameter can be null (null between separator“,” or “*”)
9.15.2.
S
TANDARD
NMEA
OUTPUT SENTENCE
Common NMEA output sentences:
Sentence
Description
Possible prefix identifier
GGA
Time, position and fix type data
GP
GSA
GNSS receiver operating mode, satellites used in the position
solution, and DOP values)
GP,GN,BD
GSV
Number of GNSS satellites in view, satellite ID numbers,
elevation, azimuth, & SNR values
GP,GL,BD
RMC
ime, date, position, course and speed data
GP,GN
VTG
Course and speed information relative to the ground
GP
Note:
1. The prefix “GP” stands for Global Positioning System;
2. The prefix “GN” stands for Global Navigation Satellite System;
3. The prefix “GL” stands for GLObalnaya NAvigatsionnaya Sputnikovaya Sistema;
4. The prefix “BD” stands for BeiDou Navigation Satellite System.
There are detailed descriptions of standard NMEA sentences in the following chapters.
9.15.3.
GGA
SENTENCE
Example:
$GPGGA,065354.10,3411.295840,N,10852.586794,E,1,05,1.2,411.9,M,-28.0,M,,*4A<CR><LF>
String name
Example
Unit
Description
Message ID
$GPGGA
GGA sentence header
UTC time
065354.10
Hour/Minute/S
econd
Latitude
3411.295840
Degree/Point
North/South
N
N= North or S=South