NMEA 0183协议解析(NMEA4.1)

NMEA-0183协议是目前GNSS接收机上使用最广泛的协议，大多数常见的GNSS接收机、GNSS数据处理软件、导航软件都遵守或者至少兼容这个协议。

下面对其常用字段进行分析

一、 XXGGA
此字段主要表示时间、经纬度位置、解算状态、卫星颗数等相关信息，XX因模式的不同而不同
（1）单GPS
$GPGGA,062938.00,3110.4700719,N,12123.2657056,E,1,25,0.6,58.9666,M,0.000,M,99,AAAA*50

（2）单BD
$BDGGA,062938.00,3110.4700719,N,12123.2657056,E,1,25,0.6,58.9666,M,0.000,M,99,AAAA*4

（3）单GLONASS
$GLGGA,062938.00,3110.4700719,N,12123.2657056,E,1,25,0.6,58.9666,M,0.000,M,99,AAAA*4

（4）多星联合定位
$GNGGA,062938.00,3110.4700719,N,12123.2657056,E,1,25,0.6,58.9666,M,0.000,M,99,AAAA*4

 

 

二、 XXGSA
用于解算卫星信息。
（1) 单GPS
$GPGSA,M,3,25,14,15,18,31,27,09,21,22,12,1.5,0.9,1.3*30

(2) 单BD
$BDGSA,M,3,141,143,144,146,147,148,149,150,2.7,1.7,2.2*2B

(3) 单GLONASS
$GLGSA,M,3,47,58,55,46,53,57,56,1.7,1.1,1.3*2D

(4) 多星联合定位
$GNGSA,M,3,27,03,16,21,06,19,31,13,23,1.0,0.6,0.8*22

$GNGSA,M,3,141,142,143,144,147,148,150,1.0,0.6,0.8*10

$GNGSA,M,3,47,56,55,46,53,44,57,1.0,0.6,0.829

 

 三、XXGSV
可见卫星信息
每条GSV语句最多可以显示4个可见卫星的信息，其他的卫星都会在下一条语句中输出显示。每种卫星系统都会单独显示，如下：GPS有3条GSV报文，北斗有2条GSV报文，GLONASS有3条GSV报文。
$GPGSV,3,1,09,19,46,206,41,16,55,015,43,31,24,120,37,06,82,060,4373

$GPGSV,3,2,09,27,82,183,45,21,15,061,33,23,47,268,43,03,72,228,44*72

$GPGSV,3,3,09,13,34,304,38,*49

$BDGSV,2,1,07,143,53,202,37,145,15,257,40,148,72,234,38,141,49,145,37*67

$BDGSV,2,2,07,151,24,048,41,150,70,327,38,147,77,113,39,*65

$GLGSV,3,1,09,47,07,193,46,43,46,101,50,59,28,309,45,49,28,305,43*68

$GLGSV,3,2,09,48,35,239,45,42,21,040,44,57,24,063,39,44,24,161,47*67

$GLGSV,3,3,09,58, 46,012,45,51

 

三、 XXRMC
位置、速度、时间等信息。
（1） 单GPS
$GPRMC,064457.90,A,3110.4691141,N,12123.2667676,E,0.157,63.0,300713,0.0,W,A05

（2） 单BDS
$BDRMC,064457.90,A,3110.4691241,N,12123.2667666,E,0.157,63.0,300713,0.0,W,A*05

（3） 单GLONASS
$GLRMC,064457.90,A,3110.4691141,N,12123.2667646,E,0.157,63.0,300713,0.0,W,A*05

（4） 双星或多星联合定位
$GNRMC,064401.65,A,3110.4706987,N,12123.2653375,E,0.604,243.2,300713,0.0,W,A*3E