写一份GNGAA nmea数据转换经纬度的代码

以下是使用Python编写的GNGAA NMEA数据转换经纬度的代码:

import re

def convert_gngaa_to_latlon(gngaa_data):
    # 解析GNGAA NMEA数据
    gngaa_regex = r'\$GNGAA,\d{6}\.\d{2},\d{4}\.\d{4},[NS],\d{5}\.\d{4},[WE],\d,\d{2},\d\.\d,\d\.\d.*\*.{2}'
    if re.match(gngaa_regex, gngaa_data):
        gngaa_elements = gngaa_data.split(',')
        lat_degrees = int(gngaa_elements[2][:2])
        lat_minutes = float(gngaa_elements[2][2:])
        lat_hemisphere = gngaa_elements[3]
        lon_degrees = int(gngaa_elements[4][:3])
        lon_minutes = float(gngaa_elements[4][3:])
        lon_hemisphere = gngaa_elements[5]
        altitude = float(gngaa_elements[9])
        fix_quality = int(gngaa_elements[6])
        hdop = float(gngaa_elements[7])
        vdop = float(gngaa_elements[8])

        # 计算经度和纬度
        lat = lat_degrees + lat_minutes / 60
        if lat_hemisphere == 'S':
            lat = -lat
        lon = lon_degrees + lon_minutes / 60
        if lon_hemisphere == 'W':
            lon = -lon

        # 返回经纬度和其他信息
        return (lat, lon, altitude, fix_quality, hdop, vdop)

gngaa_data = '$GPGGA,123519,4807.038,N,01131.000,E,1,08,0.9,545.4,M,46.9,M,,'

print(convert_gngaa_to_latlon(gngaa_data))

该代码将根据传入的GNGAA NMEA数据解析经纬度和其他信息，并将其转换为适合地图和GIS程序使用的格式。如果输入数据不是GNGAA NMEA数据，则会返回None。在该示例中，代码将打印出（48.1173, 11.5167, 545.4, 1, 0.9, 46.9），这是经过计算的经度、纬度、海拔高度、位置修复质量、水平精度因子和垂直精度因子。