/// <summary> 获取湿分量的系数
///对流层延迟，第一个是干分量的延迟量，第二个值是湿分量的映射函数系数
/// 高精度的对流层改正
/// 对流层延迟由干、湿分量组成，常用天顶方向的干、湿分量和相应的映射函数表示：detDtrop=detDdry*Mdry(E)+detDwet*Mwet(E)
/// 采用Saastamoinen模型改正对流层延迟干分量，将湿延迟分量作为未知参数进行估计,计算湿分量的系数
/// 对流层映射函数采用NMF映射函数
/// lat：测站纬度（弧度），h：测站高程(km),P:测站大气压强(mbar)，TProduct:测站温度(k),e：大气中的水汽压(mbar)
/// </summary>
/// <returns></returns>
public static double[] GetDryTropCorrectValue(Time gpsTime, XYZ satPos, XYZ receiverXyz)
{
Polar p = CoordTransformer.XyzToGeoPolar(satPos, receiverXyz);
Geo.Coordinates.GeoCoord geoCoord = Geo.Coordinates.CoordTransformer.XyzToGeoCoord(receiverXyz, Geo.Coordinates.AngleUnit.Radian);
//double troCorect = MeteorologyInfluence.TroposphereDelay(geoCoord.Lat, geoCoord.Height, info.ElevatAngle, gpsTime)
//double SS = Math.Asin(1);
//double SSS = Math.Asin(0);
double[] NMF = NeillMF(gpsTime.DayOfYear, geoCoord.Lat, geoCoord.Height, p.Elevation);
double zpd = tropol(90, geoCoord.Height / 1000d);
double zpd1 = tropol(geoCoord.Lat, geoCoord.Height / 1000d);
double zpd11 = tropol1(geoCoord.Lat, geoCoord.Height / 1000.0);
double dryZpd = MetSeason(geoCoord.Height, geoCoord.Lat, gpsTime);
double TropE = dryZpd * NMF[0];//干分量改正
double[] DryWet = new double[2];
DryWet[0] = TropE;
double wetCo = NMF[2];//湿分量系数
DryWet[1] = wetCo;
//return wetCo;
return(DryWet);
}
/// <summary>
/// 对流程改正。 对流程的改正符号为负数。
/// </summary>
/// <param name="gpsTime"></param>
/// <param name="satPos"></param>
/// <param name="receiverXyz"></param>
/// <returns></returns>
public static double GetTropoCorrectValue(Time gpsTime, XYZ satPos, XYZ receiverXyz)
{
Polar p = CoordTransformer.XyzToGeoPolar(satPos, receiverXyz, Geo.Coordinates.AngleUnit.Radian);
Geo.Coordinates.GeoCoord geoCoord = Geo.Coordinates.CoordTransformer.XyzToGeoCoord(receiverXyz, Geo.Coordinates.AngleUnit.Radian);
double troCorect = MeteorologyInfluence.TroposphereDelay(geoCoord.Lat, geoCoord.Height, p.Elevation, gpsTime);
return(troCorect);
}
/// <summary>
/// 站心极坐标转换为地心大地坐标
/// </summary>
/// <param name="localPolar">目标在地心极坐标的位置</param>
/// <param name="sitePosInGeoCenter">测站大地坐标</param>
/// <param name="el">参考椭球</param>
/// <param name="unit">角度单位</param>
/// <returns></returns>
public static GeoCoord LocalPolarToGeoCoord(Polar localPolar, GeoCoord sitePosInGeoCenter, Geo.Referencing.Ellipsoid el = null, AngleUnit unit = AngleUnit.Degree)
{
if (el == null)
{
el = Geo.Referencing.Ellipsoid.WGS84;
}
NEU neu = PolarToNeu(localPolar);
XYZ xyz = NeuToXyz(neu, sitePosInGeoCenter);
return(XyzToGeoCoord(xyz, unit));
}
/// <summary>
/// 计算 测站-卫星 方向的距离。
/// </summary>
/// <param name="neuCorrection">测站改正 NEU</param>
/// <param name="receiverXyz">测站坐标</param>
/// <param name="satXyz">卫星坐标</param>
/// <returns></returns>
public static double GetDirectionLength(NEU neuCorrection, XYZ receiverXyz, XYZ satXyz)
{
XYZ ray = (satXyz - receiverXyz);
GeoCoord geoCoord = CoordTransformer.XyzToGeoCoord(receiverXyz);
//此处修改为 NEU 坐标系。Rotate vector ray to UEN reference frame
NEU rayNeu = CoordTransformer.XyzToNeu(ray, geoCoord, AngleUnit.Degree);
NEU directionUnit = rayNeu.UnitNeuVector();//方向向量
//计算沿着射线方向的改正数。Compute corrections = displacement vectors components along ray direction.
double rangeCorretion = neuCorrection.Dot(directionUnit);
return(rangeCorretion);
}
/// <summary>
/// XYZ转换为ENU的左乘矩阵。
/// </summary>
/// <param name="geo"></param>
/// <returns></returns>
public static Matrix BuilTransferMatrixFromXyzToEnu(GeoCoord geo)
{
Geo.Algorithm.Matrix M = new Geo.Algorithm.Matrix(3);
M[0, 0] = -Math.Sin(geo.Lon);
M[0, 1] = Math.Cos(geo.Lon);
M[0, 2] = 0;
M[1, 0] = -Math.Sin(geo.Lat) * Math.Cos(geo.Lon);
M[1, 1] = -Math.Sin(geo.Lat) * Math.Sin(geo.Lon);
M[1, 2] = Math.Cos(geo.Lat);
M[2, 0] = Math.Cos(geo.Lat) * Math.Cos(geo.Lon);
M[2, 1] = Math.Cos(geo.Lat) * Math.Sin(geo.Lon);
M[2, 2] = Math.Sin(geo.Lat);
return(M);
}
/// <summary>
/// 由大地坐标计算大地线长,将采用其平均大地高计算大地线长。
/// </summary>
/// <param name="longlatADeg"></param>
/// <param name="longlatBDeg"></param>
/// <param name="majorRadius"></param>
/// <param name="inverseFlat"></param>
/// <returns></returns>
public static double BesselGeodeticLine(GeoCoord longlatADeg, GeoCoord longlatBDeg, double majorRadius = Ellipsoid.SemiMajorAxisOfCGCS2000, double inverseFlat = Ellipsoid.InverseFlatOfCGCS2000)
{
double aveGeoHeight = (longlatBDeg.Height + longlatADeg.Height) / 2.0;
return(BesselGeodeticLine(longlatADeg.Lon, longlatADeg.Lat, longlatBDeg.Lon, longlatBDeg.Lat, majorRadius + aveGeoHeight, inverseFlat));
}
/// <summary>
/// 站心坐标系到地心坐标系
/// </summary>
/// <param name="sat"> 站心坐标系,如卫星，天线</param>
/// <param name="siteCoord">坐标原点在地心坐标系中的坐标</param>
/// <returns></returns>
public static XYZ NeuToXyz(NEU sat, GeoCoord siteCoord)
{
XYZ siteXyz = CoordTransformer.GeoCoordToXyz(siteCoord);
return(EnuToXyz(sat.ENU, siteXyz));
}
/// <summary>
/// 站心坐标系到地心坐标系。
/// </summary>
/// <param name="neu">本地坐标系</param>
/// <param name="siteCoord">本地坐标原点在地心坐标系中的坐标</param>
/// <returns></returns>
public static XYZ NeuToXyz(NEU neu, XYZ siteCoord)
{
GeoCoord coord = XyzToGeoCoord(siteCoord);
return(NeuToXyz(neu, coord));
}
/// <summary>
/// 计算卫星的站心极坐标，全程 度 为单位,此比XYZ更精确，推荐。！！2017.10.12
/// </summary>
/// <param name="satXyz">卫星的地心空间直角坐标</param>
/// <param name="stationGeoCoord">测站的地心大地坐标或球坐标，不同坐标对应不同的高度角</param>
/// <returns></returns>
public static Polar XyzToPolar(XYZ satXyz, GeoCoord stationGeoCoord)
{
var staXyz = CoordTransformer.GeoCoordToXyz(stationGeoCoord);
return(XyzToPolar(satXyz, staXyz, stationGeoCoord.Lon, stationGeoCoord.Lat, AngleUnit.Degree));
}
/// <summary>
/// 构建。
/// </summary>
/// <param name="DopCaculator"></param>
/// <param name="table"></param>
/// <param name="Time"></param>
/// <param name="geoCoord"></param>
private void Build(DopCaculator DopCaculator, Geo.ObjectTableStorage table, Time Time, Geo.Coordinates.GeoCoord geoCoord, bool isSimpleModel)
{
//var xyz = Geo.Coordinates.CoordTransformer.GeoCoordToXyz(geoCoord);
//if (geoCoord.Lon == 0)
//{
// var geoCoord2 = Geo.Coordinates.CoordTransformer.XyzToGeoCoord(xyz);
// int i = 0;
//}
var dop = DopCaculator.Calculate(geoCoord, Time);
if (dop != null)
{
table.NewRow();
//table.AddItem("Epoch", Time);
//table.AddItem("X", xyz.X);
//table.AddItem("Y", xyz.Y);
//table.AddItem("Z", xyz.Z);
if (!isSimpleModel)
{
table.AddItem("Lon", geoCoord.Lon);
table.AddItem("Lat", geoCoord.Lat);
}
//table.AddItem("Heigh", geoCoord.Height);
table.AddItem("SatCount", dop.SatCount);
if (Geo.Utils.DoubleUtil.IsValid(dop.GDop))
{
table.AddItem("GDOP", GetValNotExceed(dop.GDop));
table.AddItem("PDOP", GetValNotExceed(dop.PDop));
table.AddItem("HDOP", GetValNotExceed(dop.HDop));
table.AddItem("VDOP", GetValNotExceed(dop.VDop));
table.AddItem("TDOP", GetValNotExceed(dop.TDop));
}
table.EndRow();
}
else if (isSimpleModel) //如果没有经纬度，则采用N替代，否书数据空缺很危险
{
table.NewRow();
//table.AddItem("Epoch", Time);
//table.AddItem("X", xyz.X);
//table.AddItem("Y", xyz.Y);
//table.AddItem("Z", xyz.Z);
//table.AddItem("Lon", geoCoord.Lon);
//table.AddItem("Lat", geoCoord.Lat);
//table.AddItem("Heigh", geoCoord.Height);
table.AddItem("SatCount", "N");
table.AddItem("GDOP", "N");
table.AddItem("PDOP", "N");
table.AddItem("HDOP", "N");
table.AddItem("VDOP", "N");
table.AddItem("TDOP", "N");
table.EndRow();
}
}