GPRM/GNRMC定位信息的读取与解析&＃xff08;3&＃xff09;

参考网址&＃xff1a;http://www.cnblogs.com/88223100/p/GPRM_GNRMC_Transform.html

帧头	UTC时间	状态	纬度	北纬/南纬	经度	东经/西经	速度
$GPRMC	hhmmss.sss	A/V	ddmm.mmmm	N/S	dddmm.mmmm	E/W	节

 

 

 

 

方位角	UTC日期	磁偏角	磁偏角方向	模式	校验	回车换行
度	ddmmyy	000 - 180	E/W	A/D/E/N	*hh	CR&＃43;LF

 

 

 

 

 

格 式&＃xff1a; $GPRMC,<1>,<2>,<3>,<4>,<5>,<6>,<7>,<8>,<9>,<10>,<11>,<12>*hh
$GPRMC,024813.640,A,3158.4608,N,11848.3737,E,10.05,324.27,150706,,,A*50
说 明&＃xff1a;
字段 0&＃xff1a;$GPRMC&＃xff0c;语句ID&＃xff0c;表明该语句为Recommended Minimum Specific GPS/TRANSIT Data&＃xff08;RMC&＃xff09;推荐最小定位信息
          字段 1&＃xff1a;UTC时间&＃xff0c;hhmmss.sss格式
          字段 2&＃xff1a;状态&＃xff0c;A&＃61;定位&＃xff0c;V&＃61;未定位
          字段 3&＃xff1a;纬度ddmm.mmmm&＃xff0c;度分格式&＃xff08;前导位数不足则补0&＃xff09;
          字段 4&＃xff1a;纬度N&＃xff08;北纬&＃xff09;或S&＃xff08;南纬&＃xff09;
          字段 5&＃xff1a;经度dddmm.mmmm&＃xff0c;度分格式&＃xff08;前导位数不足则补0&＃xff09;
          字段 6&＃xff1a;经度E&＃xff08;东经&＃xff09;或W&＃xff08;西经&＃xff09;
          字段 7&＃xff1a;速度&＃xff0c;节&＃xff0c;Knots&＃xff08;一节也是1.852千米&＃xff0f;小时&＃xff09;
          字段 8&＃xff1a;方位角&＃xff0c;度&＃xff08;二维方向指向&＃xff0c;相当于二维罗盘&＃xff09;
          字段 9&＃xff1a;UTC日期&＃xff0c;DDMMYY格式
          字段10&＃xff1a;磁偏角&＃xff0c;&＃xff08;000 - 180&＃xff09;度&＃xff08;前导位数不足则补0&＃xff09;
          字段11&＃xff1a;磁偏角方向&＃xff0c;E&＃61;东&＃xff0c;W&＃61;西
          字段12&＃xff1a;模式&＃xff0c;A&＃61;自动&＃xff0c;D&＃61;差分&＃xff0c;E&＃61;估测&＃xff0c;N&＃61;数据无效&＃xff08;3.0协议内容&＃xff09;
          字段13&＃xff1a;校验值

///

/// GPS信息///

public class GPSInfo{public string Longitude;//经度public string Latitude; //纬度public string Speed; //速度public string GPSStatus;//GPS状态 A&＃61;数据有效&＃xff1b;V&＃61;数据无效public string GPSTime;//GPS时间public string GPSHeading;//航向
}///

/// GPS/BD定位信息解析///

public static class GPSAnalysisClass{///

/// 打开串口///

/// SerialPort/// PortName/// BaudRate/// public static bool OpenSerialPort(SerialPort _SerialPort, string _PortName, int _BaudRate){bool Ret &＃61; false;try{_SerialPort.Close();_SerialPort.PortName &＃61; _PortName;_SerialPort.BaudRate &＃61; _BaudRate;_SerialPort.NewLine &＃61; Environment.NewLine;_SerialPort.Open();if (_SerialPort.IsOpen)Ret &＃61; true;}catch (Exception ex){Console.WriteLine(ex.Message);Ret &＃61; false;}return Ret;}///

/// GNRMC解析[北斗]///

/// 原始字符串/// 北斗定位信息public static GPSInfo GNRMCAnalysis(string _RecString){GPSInfo gpsInfo &＃61; null;string[] strtemp &＃61; _RecString.Split(&＃39;\n&＃39;);for (int i &＃61; 0; i ){string[] strtemp1 &＃61; strtemp[i].Split(&＃39;,&＃39;);if (strtemp1.Length >&＃61; 12){if (strtemp1[0] &＃61;&＃61; "$GNRMC"){gpsInfo &＃61; new GPSInfo();gpsInfo.GPSStatus &＃61; strtemp1[2];gpsInfo.GPSHeading &＃61; strtemp1[8];gpsInfo.Speed &＃61; strtemp1[7] &＃61;&＃61; "" ? "" : Convert.ToDouble(Convert.ToDouble(strtemp1[7]) * 1.852).ToString("0.0");gpsInfo.Latitude &＃61; strtemp1[3] &＃61;&＃61; "" ? "" : GPSTransforming(strtemp1[3]).ToString("0.000000");gpsInfo.Longitude &＃61; strtemp1[5] &＃61;&＃61; "" ? "" : GPSTransforming(strtemp1[5]).ToString("0.000000");gpsInfo.GPSTime &＃61; strtemp1[9] &＃61;&＃61; "" ? "" : "20" &＃43; strtemp1[9].Substring(4, 2) &＃43; "-" &＃43; strtemp1[9].Substring(2, 2) &＃43; "-" &＃43; strtemp1[9].Substring(0, 2) &＃43; " " &＃43; strtemp1[1].Substring(0, 2) &＃43; ":" &＃43; strtemp1[1].Substring(2, 2) &＃43; ":" &＃43; strtemp1[1].Substring(4, 2);}}}return gpsInfo;}///

/// GPRM字符串解析[GPS]///

/// 原始字符串/// GPS定位信息public static GPSInfo GPRMCAnalysis(string _RecString){GPSInfo gpsInfo &＃61; null;if (!string.IsNullOrEmpty(_RecString)){_RecString &＃61; _RecString.Contains("\r") ? _RecString.Substring(0, _RecString.IndexOf("\r")) : _RecString;string[] seg &＃61; _RecString.Split(&＃39;,&＃39;);if (seg.Length >&＃61; 12){gpsInfo &＃61; new GPSInfo();gpsInfo.GPSStatus &＃61; seg[2];//状态gpsInfo.GPSHeading &＃61; seg[8];//角度gpsInfo.Speed &＃61; seg[7] &＃61;&＃61; "" ? "" : (Convert.ToDouble(seg[7]) * 1.852).ToString("0.0");//速度gpsInfo.Latitude &＃61; seg[4] &＃61;&＃61; "" ? "" : GPSTransforming(seg[3]).ToString("0.000000");gpsInfo.Longitude &＃61; seg[6] &＃61;&＃61; "" ? "" : GPSTransforming(seg[5]).ToString("0.000000"); ;gpsInfo.GPSTime &＃61; seg[9] &＃61;&＃61; "" ? "" : string.Format("20{0}-{1}-{2} {3}:{4}:{5}", seg[9].Substring(4), seg[9].Substring(2, 2), seg[9].Substring(0, 2), seg[1].Substring(0, 2), seg[1].Substring(2, 2), seg[1].Substring(4));}}return gpsInfo;}///

/// 降度分秒格式经纬度转换为小数经纬度///

/// 度分秒经纬度/// 小数经纬度private static double GPSTransforming(string _Value){double Ret &＃61; 0.0;string[] TempStr &＃61; _Value.Split(&＃39;.&＃39;);string x &＃61; TempStr[0].Substring(0, TempStr[0].Length - 2);string y &＃61; TempStr[0].Substring(TempStr[0].Length - 2, 2);string z &＃61; TempStr[1].Substring(0, 4);Ret &＃61; Convert.ToDouble(x) &＃43; Convert.ToDouble(y) / 60 &＃43; Convert.ToDouble(z) / 600000;return Ret;}}