private DcbFile GetNearDcbFile(Time nearTime, string fileType)
{
DcbFile nearDcbFile = null;
var newName = TimeTokey(nearTime, fileType) + ".DCB";
string newpath = Path.Combine(this.Option.FilePath, newName);
if (File.Exists(newpath))
{
nearDcbFile = new DcbFileReader(newpath).Read();
log.Info("DCB 载入临近时间 " + newpath);
}
return(nearDcbFile);
}
/// <summary>
/// P2C2与P1C1和P1P2不同
/// </summary>
/// <param name="prn"></param>
/// <param name="time"></param>
/// <param name="fileType"></param>
/// <returns></returns>
public RmsedNumeral GetP2C2_rinex(SatelliteNumber prn, Time time, string fileType = "P2C2")
{
lock (locker)
{
string key = TimeTokey(time, fileType);
DcbFile dcbFile = null;
if (!data.ContainsKey(key))
{
string fileName = key + "_RINEX.DCB";
var allPathes = GetPosibleFilePathes(fileName);
foreach (var path in allPathes)
{
if (File.Exists(path))
{
dcbFile = new DcbFileReader(path).ReadP2C2();
log.Info("DCB 载入 " + path);
//是 null 也存储
data[key] = dcbFile;
break;//匹配成功一个即中断
}
}
//首先尝试下载
if (dcbFile == null && Setting.IsInternetEnabled)
{
var url = BuildUrl(time, fileType);
var localPath = InputFileManager.GetLocalFilePath(url, "*_RINEX.DCB", "*_RINEX.DCB.Z");
if (File.Exists(localPath))
{
dcbFile = new DcbFileReader(localPath).Read();
log.Info("DCB 载入 " + localPath);
//是 null 也存储
data[key] = dcbFile;
}
}
#region 其它情况
//如果网络不通，或下载失败，则查找附近几个月的结果，先前2月，后考虑后两月。
//if (dcbFile == null)
//{
// var nearTime = time - TimeSpan.FromDays(30.5); ;
// dcbFile = GetNearDcbFile(nearTime, fileType);
//}
//if (dcbFile == null)
//{
// var nearTime = time + TimeSpan.FromDays(30.5);
// dcbFile = GetNearDcbFile(nearTime, fileType);
//} if (dcbFile == null)
//{
// var nearTime = time - TimeSpan.FromDays(61);
// dcbFile = GetNearDcbFile(nearTime, fileType);
//} if (dcbFile == null)
//{
// var nearTime = time + TimeSpan.FromDays(61);
// dcbFile = GetNearDcbFile(nearTime, fileType);
//}
#endregion
if (dcbFile != null)
{
data[key] = dcbFile;
log.Info("本次处理 DCB 采用相邻时间文件 " + dcbFile);
}
}
else
{
dcbFile = data[key];
}
if (dcbFile == null)
{
return(RmsedNumeral.Zero);
}
return(dcbFile.GetSatInfo(prn));
}
}