//初始化计算
public void InitP(CePoint cpoint)
{
Point dp = ForP - cpoint;
double radBp = 0, radLp = 0, h = 0;
cpoint.XYZ2BLH(ref radBp, ref radLp, ref h);
double[,] Romat = Algo.RoMat(radBp, radLp);
ResP = Romat * dp;
a = Math.Atan(ResP.Y / ResP.X);
if (a < 0)
{
a = a + Math.PI;
}
e = Math.Atan(ResP.Z / (Math.Sqrt(ResP.X * ResP.X + ResP.Y * ResP.Y)));
//double dua = a * 180.0 / Math.PI;
//double due = e * 180.0 / Math.PI;
//计算穿刺点地磁纬度
double X = 0.0137 / (e + 0.11) - 0.022;
double fai = radBp + X * Math.Cos(a);
double lanta = radLp + X * Math.Sin(a) / Math.Cos(fai);
double faim = fai + 0.064 * Math.Cos(lanta - 1.617);
//计算电离层延迟量
double[] arfa = { 0.1397 * Math.Pow(10, -7), -0.7451 * Math.Pow(10, -8), -0.5960 * Math.Pow(10, -7), 0.1192 * Math.Pow(10, -6) };
double[] beta = { 0.1270 * Math.Pow(10, 6), -0.1966 * Math.Pow(10, 6), 0.6554 * Math.Pow(10, 5), 0.2621 * Math.Pow(10, 6) };
double A1 = 5 * Math.Pow(10, -9); //夜间时间常量
double A3 = 50400.0; //表示取最大值时当地时间
double A2 = arfa[0] + arfa[1] * faim + arfa[2] * faim * faim + arfa[3] * Math.Pow(faim, 3);
double A4 = beta[0] + beta[1] * faim + beta[2] * faim * faim + beta[3] * Math.Pow(faim, 3);
double t = cpoint.CurTime.SecondOfDay() + 43200.0 * lanta;//应该是这个时刻的秒数
double ptemp = (Math.PI * 2 * (t - A3) / A4);
double F = 1 + 16.0 * Math.Pow((0.53 - e), 3);
//电离层延时量
if (Math.Abs(ptemp) < 1.57)
{
tion = F * (A1 + A2 * Math.Cos(ptemp));
}
else
{
tion = F * A1;
}
tion = tion * 299792458;
}
//旋转矩阵计算
public static Point operator *(double [,] rMat, Point dp)
{
double[,] dpmat = { { dp.X }, { dp.Y }, { dp.Z } };
dpmat = Algo.MatMulti(rMat, dpmat);
return(new Point(dpmat[0, 0], dpmat[1, 0], dpmat[2, 0]));
}
