/// <summary>
/// 权阵获取，如果无提供器，则采用默认 1.
/// </summary>
/// <param name="sats"></param>
/// <returns></returns>
private Matrix BiuldWeight(List <Ephemeris> sats)
{
Matrix P = new Matrix(sats.Count);
int i = 0;
foreach (var eph in sats)
{
double p = 1;
if (SatWeights != null)
{
var val = SatWeights.Get(eph.Time, eph.Prn);
if (Geo.Utils.DoubleUtil.IsValid(val))
{
p = val;
}
}
P[i, i] = p;
i++;
}
return(P);
}
