本工具从NMEA文件里读取GPRMC的GPS时间戳 BY Hong Wenjun
Usage: gprmc.exe [NMEA.txt] [gps.txt] [8484]
输出文件不填,结果显示在屏幕上
- WGS-84 和 GCJ-02 的 EMEA 打印转换第三个参数 code 定义
- 02 表示 GCJ-02;
- 84 表示 WGS-84;
- code 定义 默认 8484
- 8484: 输入WGS-84 度分格式, 输出WGS-84 度小数
- 8402: 输入WGS-84 度分格式, 输出GCJ-02 火星坐标
- 0202: 输入GCJ-02 火星坐标, 输出GCJ-02 火星坐标
- 0284: 输入GCJ-02 火星坐标, 输出WGS-84 度小数
https://github.com/hongwenjun/nmea_gprmc/blob/master/img/NMEA_GPRMC.H
5143e676-9d9d-43c6-8fb2-abfe62f4fecb.bin.gz
使用工具 https://github.com/hongwenjun/TrajectoryCombine 提取
纬度 经度 时速(Km/H) 时间戳
29.20859 119.54156 0.0 2016-10-23 15:29:23
29.20384 119.53863 15.4 2016-10-23 15:33:50
29.21070 119.53882 0.0 2016-10-23 15:38:37
29.20282 119.53762 32.1 2016-10-23 15:44:02
29.20668 119.51324 49.6 2016-10-23 15:48:25
20161023152954-1-syn.nmea
$GPRMC,153013,A,2920.864000,N,11954.167000,E,3.00,0.00,20161023,,,D*7D
$PTUBA,167.94,,17,GPS,,8.00,F,F*15
$GPRMC,153015,A,2920.863000,N,11954.167000,E,3.00,0.00,20161023,,,D*7C
$PTUBA,168.68,,17,GPS,,12.00,F,F*22
http://www.google.cn/maps/dir/29.20863000%09119.54168000
本工具 https://github.com/hongwenjun/nmea_gprmc (编写中) 可以提取转换
log_20161023_152959.txt
$GPRMC,073001.00,A,2912.691526,N,11932.212546,E,000.1,,231016,,,A*7A
$GPRMC,073059.00,A,2912.726239,N,11932.183854,E,007.6,330.1,231016,,,A*59
$GPRMC,073100.00,A,2912.728339,N,11932.182502,E,007.8,328.5,231016,,,A*57
$GPRMC,073101.00,A,2912.730270,N,11932.180878,E,007.9,323.8,231016,,,A*56
度分格式:2912.730270,N,11932.180878,E
转换成度小数格式是: 29.212171 119.536348
使用google地图中国版 位置偏差
http://www.google.cn/maps/dir/29.212171%09119.536348
使用google国际版,位置正确的
https://www.google.com/maps/place/29°12'43.8"N+119°32'10.8"E/@29.2126606,119.5334187
20161023140958.txt
$GPRMC,060947.00,A,2912.680607,N,11932.222854,E,002.3,288.3,231016,,,A*51
$GPRMC,060948.00,A,2912.680646,N,11932.222077,E,002.3,268.5,231016,,,A*5A
$GPRMC,060949.00,A,2912.680596,N,11932.221495,E,002.3,247.4,231016,,,A*52
$GPRMC,060950.00,A,2912.680666,N,11932.220951,E,002.3,261.8,231016,,,A*5A
$GPRMC,060951.00,A,2912.680943,N,11932.220313,E,002.3,285.0,231016,,,A*5D
度分格式:2912.680607,N,11932.222854,E
转换成度小数格式是: 29.211343 119.537048
使用google国际版,位置正确的
https://www.google.com/maps/place/29°12'40.8"N+119°32'13.4"E/@29.211343,119.5348593
https://github.com/hongwenjun/nmea_gprmc/tree/master/test_nmea
txt文件要自己指定精度 纬度 没有航迹。
nmea和gpx文件支持航迹比较方便。
gpx格式比较简单,支持转换还不错。
gprmc.exe MAPBAR_NMEA_20161023152954-2-syn.nmea gps.txt 0284
将自动把 gps.txt 转换成 gps.txt.gpx 并且 GPS里的火星坐标会转换成地球坐标 然后把gpx 拉到Google地球将显示航迹轨迹