NMEA GPRMC 格式图解，NMEA 工具的比较

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nmea_gprmc

    使用说明  一个参数，参数为一行GPRMC数据    例子:    nmea_gprmc  $GPRMC,060947.00,A,2912.680607,N,11932.222854,E,002.3,288.3,231016,,,A*51    Out:    $GPRMC,60947.00,A,2912.680607,N,11932.222854,E,2.30,288.3,231016,,,A*51    纬度    经度    时速(Km/H)      时间戳    29.211343       119.537048      4.3     23-10-16 06:09:47

NMEA GPRMC 格式图解，NMEA_GPRMC.H 是本图文本格式

https://github.com/hongwenjun/nmea_gprmc/blob/master/img/NMEA_GPRMC.H

百度导航记录的轨迹文件GPS数据是火星坐标,，使用google地图和Bing地图中国版无偏差

    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

http://www.google.cn/maps/dir/29.20859%09119.54156/29.20384%09119.53863/29.21070%09119.53882/29.20282%09119.53762/29.20668%09119.51324

图吧汽车位置抓的NEMA数据是火星坐标，使用google地图和Bing地图中国版无偏差

    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

NEMA TOOLS 工具抓的 GPS坐标是度分格式

    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

GPS NMEA 工具抓的 GPS坐标是度分格式

    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

以上相关 GPS数据文件已经提供测试 URL如下

https://github.com/hongwenjun/nmea_gprmc/tree/master/test_nmea

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