/// <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>
/// 地心极坐标抓换为地心大地坐标
/// </summary>
/// <param name="polarInGeoCenter">极坐标</param>
/// <param name="unit">角度单位</param>
/// <returns></returns>
public static GeoCoord PolarToGeoCoord(Polar polarInGeoCenter, AngleUnit unit = AngleUnit.Degree)
{
XYZ xyz = PolarToXyz(polarInGeoCenter, unit);
return(XyzToGeoCoord(xyz, unit));
}