/// <summary>
/// GNSS导航文件的读取
/// </summary>
/// <param name="navFilePath"></param>
/// <returns></returns>
public MixedNavFile ReadGnssNavFlie()
{
MixedNavFile f = new MixedNavFile();
f.SetHeader(ParamNavFileReader.ReadHeader(RinexFileName));
//测试版本
if (f.Header.Version == 0)
{
using (StreamReader sr = new StreamReader(RinexFileName, UnicodeEncoding.UTF8))
{
RinexUtil.SkipHeader(sr);
}
}
using (StreamReader sr = new StreamReader(RinexFileName, UnicodeEncoding.UTF8))
{
RinexUtil.SkipHeader(sr);
if (f.Header.Version < 3.0)
{
while (sr.Peek() != -1)
{
EphemerisParam record = ParamNavFileReader.ReadRecordV2(sr, f.Header);
f.Add(record);
}
}
else if (f.Header.Version >= 3.0 && f.Header.Version < 4.0)
{
while (sr.Peek() != -1)
{
string line = sr.ReadLine();
if (string.IsNullOrWhiteSpace(line))
{
continue;
}
SatClockBias recordHeader = ParamNavFileReader.ParseFirstLineV3(line, f.Header);
//轨道参数
var satType = recordHeader.Prn.SatelliteType;
if (EphemerisUtil.IsEphemerisParam(satType))
{
var record = new EphemerisParam(recordHeader);
ParamNavFileReader.ReadRecordBodyV3(sr, record);
f.Add(record);
}
else
{
var record2 = new GlonassNavRecord(recordHeader);
GlonassNaviFileReader.ParseFirstLineV3(line, record2);
GlonassNaviFileReader.ReadRecordBodyV3(sr, record2);
f.Add(record2);
}
}
}
}
return(f);
}
/// <summary>
/// RINEX 3.0 记录读取。
/// </summary>
/// <param name="sr">数据流</param>
/// <param name="header">头部信息</param>
/// <returns></returns>
public static GlonassNavRecord ReadRecordV3(StreamReader sr, NavFileHeader header)
{
GlonassNavRecord record = new GlonassNavRecord();
string line = sr.ReadLine();
GlonassNaviFileReader.ParseFirstLineV3(line, record);
return(ReadRecordBodyV3(sr, record));
}
/// <summary>
/// 读取GLONASS导航文件
/// </summary>
/// <param name="navFilePath">路径</param>
/// <returns></returns>
public static GlonassNavFile ReadFileV2V3(string navFilePath)
{
GlonassNavFile f = new GlonassNavFile();
f.Header = ParamNavFileReader.ReadHeader(navFilePath);
//测试版本
if (f.Header.Version == 0)
{
using (StreamReader sr = new StreamReader(navFilePath, UnicodeEncoding.UTF8))
{
RinexUtil.SkipHeader(sr);
try
{
GlonassNaviFileReader.ReadRecordV2(sr, f.Header);
GlonassNaviFileReader.ReadRecordV2(sr, f.Header);
// f.Header.Version = 2.0;
}
catch
{
f.Header.Version = 1.0;
}
}
}
using (StreamReader sr = new StreamReader(navFilePath, UnicodeEncoding.UTF8))
{
RinexUtil.SkipHeader(sr);
while (sr.Peek() != -1)
{
GlonassNavRecord record = null;
if (f.Header.Version < 3)
{
record = GlonassNaviFileReader.ReadRecordV2(sr, f.Header);
}
else if (f.Header.Version >= 3)
{
record = GlonassNaviFileReader.ReadRecordV3(sr, f.Header);
}
else
{
throw new ArgumentException(" 导航文件版本 " + f.Header.Version);
}
f.Add(record);
}
}
return(f);
}
/// <summary>
/// 读取记录
/// </summary>
/// <param name="sr">数据流读取器</param>
/// <param name="header">头部信息</param>
/// <returns></returns>
public static GlonassNavRecord ReadRecordV2(StreamReader sr, NavFileHeader header)
{
GlonassNavRecord record = new GlonassNavRecord();
string line = sr.ReadLine();
GlonassNaviFileReader.ParseFirstLineV2(line, header, record);
line = sr.ReadLine();
line = line.Replace('D', 'E');
double x = double.Parse(line.Substring(3, 19));
double vx = double.Parse(line.Substring(22, 19));
double vvx = double.Parse(line.Substring(41, 19));
record.Health = double.Parse(line.Substring(60, 19));
line = sr.ReadLine();
line = line.Replace('D', 'E');
double y = double.Parse(line.Substring(3, 19));
double vy = double.Parse(line.Substring(22, 19));
double vvy = double.Parse(line.Substring(41, 19));
record.FrequencyNumber = double.Parse(line.Substring(60, 19));
line = sr.ReadLine();
line = line.Replace('D', 'E');
double z = double.Parse(line.Substring(3, 19));
double vz = double.Parse(line.Substring(22, 19));
double vvz = double.Parse(line.Substring(41, 19));
record.FrequencyNumber = double.Parse(line.Substring(60, 19));
record.AgeOfOper = double.Parse(line.Substring(60, 19));
record.XYZ = new XYZ(x, y, z) * 1000.0; // km -> m
record.XyzVelocity = new XYZ(vx, vy, vz) * 1000.0; // km -> m
record.XyzAcceleration = new XYZ(vvx, vvy, vvz) * 1000.0; // km -> m
return(record);
}
