1 通讯接口：软硬件波特率为4800baud
2 电文格式：NMEA0183，其内容包含：GGA、GLL、GSA、GSV、RMC、VTG。各组数据含义如下：(数位参考)
A. GGA显示的说明—座标位置数据
yuandi.b.GPSduankoushuoming.files\image001.gif
B.
GLL—地理位置—经纬度
yuandi.b.GPSduankoushuoming.files\image002.gif
C. GSA—误差因子与有效卫星
D. GSV—视界内卫星
E. RMC语句：RMC语句是推荐的导航语句，定义如下。
|
Name |
Example |
Units |
Description |
|
Message ID |
$GPRMC |
|
RMC protocol header |
|
UTC Position |
161229.487 |
|
hhmmss.sss |
|
Status |
A |
|
A=data valid or V=data not valid |
|
Latitude |
3723.2475 |
|
ddmm.mmmm |
|
N/S Indicator |
N |
|
N=north or S=south |
|
Longitude |
12158.3416 |
|
dddmm.mmmm |
|
E/W Indicator |
W |
|
E=east or W=west |
|
Speed Over Ground |
0.13 |
knots |
|
|
Course Over Ground |
309.62 |
degrees |
True |
|
Date |
120598 |
|
ddmmyy |
|
Magnetic Variation |
|
degrees |
E=east or W=west |
|
Checksum |
*10 |
|
|
|
<CR> <LF> |
|
|
End of message termination |
