public override SmoothTimeValue Create(SatelliteNumber key)
{
return(new SmoothTimeValue(this.MaxTimeSpan, MaxDifferValue, true, false)
{
Name = key.ToString()
});
}
/// <summary>
/// 获取卫星在指定时刻，相对于测站的信息
/// </summary>
/// <param name="service"></param>
/// <param name="prn"></param>
/// <param name="time"></param>
/// <returns></returns>
public StationSatInfo GetInstantSatInfo(IEphemerisService service, SatelliteNumber prn, Time time)
{
Geo.Coordinates.XYZ satPos = service.Get(prn, time).XYZ;
GeoCoord coord = CoordTransformer.XyzToGeoCoord(satPos);
Geo.Coordinates.Polar p = CoordTransformer.XyzToGeoPolar(satPos, StationPos);
if (p.Elevation < EleAngle)
{
return(null);
}
this.LonLats.Add(new Vector(coord.Lon, coord.Lat)
{
Tag = prn.ToString()
});
//显示到表格
return(new StationSatInfo()
{
PRN = prn,
Time = time,
Azimuth = p.Azimuth,
ElevatAngle = p.Elevation,
Distance = p.Range,
Lat = coord.Lat,
Lon = coord.Lon,
Height = coord.Height,
X = satPos.X,
Y = satPos.Y,
Z = satPos.Z
});
}
/// <summary>
/// 保存结果到总表中
/// </summary>
/// <param name="allInOneTable"></param>
/// <param name="tableIonoParam"></param>
/// <param name="prn"></param>
/// <param name="typeName"></param>
private static void CheckAndAddIonoValueToMainTable(ObjectTableStorage allInOneTable, ObjectTableStorage tableIonoParam, SatelliteNumber prn, string typeName)
{
if (tableIonoParam != null)
{
if (tableIonoParam.CurrentRow.ContainsKey(prn.ToString()))
{
allInOneTable.AddItem(prn + "_" + typeName, tableIonoParam.CurrentRow[prn.ToString()]);
}
}
}
/// <summary>
/// 返回一个距离历元最近的结果。
/// </summary>
/// <param name="prn"></param>
/// <param name="epoch">需要精确的时刻</param>
/// <returns></returns>
public double Get(SatelliteNumber prn, Time epoch)
{
if (Data != null)
{
if (Data.ContainsKeyBA(prn.ToString(), epoch))
{
return(Data[epoch, prn.ToString()]);
}
if (!Data.ContainsKeyB(prn.ToString()))
{
return(0);
}
if (!TimePeriod.Contains(epoch))
{
return(0);
}
var vals = Data.GetValuesByKeyB(prn.ToString());
//获取最近几个
var dic = Geo.Utils.DoubleUtil.GetNearst(vals, m => m.SecondsOfWeek, epoch, FitCount);
if (IsAverageOrFit)
{
var ave = dic.Values.Average();
return(ave);
}
else
{
LsPolyFit fit = new LsPolyFit(2);
fit.InitAndFitParams <Time>(dic, m => m.SecondsOfWeek);
var y = fit.GetY(epoch.SecondsOfWeek);
return(y);
}
}
return(0);
}
/// <summary>
/// Method tat implements the mw cycle slip detection algorithm
/// </summary>
/// <param name="epoch">Time of observations</param>
/// <param name="prn">SatId</param>
/// <param name="mwValue">Current mw observation value</param>
/// <returns></returns>
public bool GetDetection(Time epoch, SatelliteNumber prn, double mwValue)
{
bool isFirst = false;
if (!this.Contains(prn))
{
this[prn] = new SmoothTimeValue(this.MaxTimeSpan, MaxDifferValue, true, false)
{
Name = prn.ToString()
};
isFirst = true;
log.Debug(epoch + ", " + prn + " 卫星第一次出现，标记为有周跳。");
return(true);//第一次出现，默认有之。
}
SmoothTimeValue current = this[prn];
var isExceed = !current.Regist(epoch, mwValue);
var result = isExceed || isFirst;
return(result);
}
/// <summary>
/// 根据太阳计算卫星偏差
/// </summary>
/// <param name="prn"></param>
/// <param name="eph"></param>
/// <param name="emissionTime"></param>
/// <returns></returns>
private XYZ GetSatAntOff(SatelliteNumber prn, IEphemeris eph, Time emissionTime)
{
ErpItem erpv = null;
if (DataSouceProvider.ErpDataService != null)
{
erpv = DataSouceProvider.ErpDataService.Get(emissionTime);
}
if (erpv == null)
{
erpv = ErpItem.Zero;
}
XYZ rsun = new XYZ();
//sun position in ecef
// rsun = EpochSat.EpochInfo.DataSouceProvider.UniverseObjectProvider.GetSunPosition(emissionTime);
this.DataSouceProvider.UniverseObjectProvider.GetSunPosition(emissionTime, erpv, ref rsun);
//unit vetcors of satellite fixed coordinates
XYZ ez = -1 * eph.XYZ.UnitVector();
XYZ es = (rsun - eph.XYZ).UnitVector();
//outer product of 3D vectors
XYZ r = new XYZ();
r.X = ez.Y * es.Z - ez.Z * es.Y;
r.Y = ez.Z * es.X - ez.X * es.Z;
r.Z = ez.X * es.Y - ez.Y * es.X;
XYZ r0 = new XYZ();
r0.X = r.Y * ez.Z - r.Z * ez.Y;
r0.Y = r.Z * ez.X - r.X * ez.Z;
r0.Z = r.X * ez.Y - r.Y * ez.X;
XYZ ex = r0.UnitVector();
XYZ ey = r.UnitVector();
//XYZ ex = new XYZ();
//ex.X = ey.Y * ez.Z - ey.Z * ez.Y;
//ex.Y = ey.Z * ez.X - ey.X * ez.Z;
//ex.Z = ey.X * ez.Y - ey.Y * ez.X;
//use L1 value
if (DataSouceProvider.AntennaDataSource == null)
{
return(new XYZ());
}
IAntenna antenna = DataSouceProvider.AntennaDataSource.Get(prn.ToString(), emissionTime);
//如果为空，则返回 0 坐标
if (antenna == null)
{
return(new XYZ());
}
// Get antenna eccentricity for frequency "G01" (L1), in
// satellite reference system.
// NOTE: It is NOT in ECEF, it is in UEN!!!
RinexSatFrequency freq = new RinexSatFrequency(prn, 1);
// NEU satAnt = antenna.GetAntennaEccentricity(AntennaFrequency.G01);
NEU satAnt = antenna.GetPcoValue(freq);
XYZ dant = new XYZ();
dant.X = satAnt.E * ex.X + satAnt.N * ey.X + satAnt.U * ez.X;
dant.Y = satAnt.E * ex.Y + satAnt.N * ey.Y + satAnt.U * ez.Y;
dant.Z = satAnt.E * ex.Z + satAnt.N * ey.Z + satAnt.U * ez.Z;
// Unitary vector from satellite to Earth mass center (ECEF)
XYZ satToEarthUnit = (-1.0) * eph.XYZ.UnitVector();
// Unitary vector from Earth mass center to Sun (ECEF)
XYZ earthToSunUnit = rsun.UnitVector();
// rj = rk x ri: Rotation axis of solar panels (ECEF)
XYZ rj = satToEarthUnit.Cross(earthToSunUnit);
// Redefine ri: ri = rj x rk (ECEF)
earthToSunUnit = rj.Cross(satToEarthUnit);
// Let's funcKeyToDouble ri to an unitary vector. (ECEF)
earthToSunUnit = earthToSunUnit.UnitVector();
XYZ dant1 = new XYZ();
dant1.X = satAnt.E * rj.X + satAnt.N * earthToSunUnit.X + satAnt.U * satToEarthUnit.X;
dant1.Y = satAnt.E * rj.Y + satAnt.N * earthToSunUnit.Y + satAnt.U * satToEarthUnit.Y;
dant1.Z = satAnt.E * rj.Z + satAnt.N * earthToSunUnit.Z + satAnt.U * satToEarthUnit.Z;
return(dant1);
}