如何将TLE信息转换为经度纬度和海拔高度以显示在Bing地图上?

时间:2010-06-23 07:12:51

标签: silverlight tracking bing-maps satellite

我正在使用OrbitTools库来使用类似于http://karhukoti.com的Bing Maps Silverlight控件开发卫星跟踪系统。

我不熟悉这个领域,缺乏很多与卫星跟踪相关的信息,但已开始自学,因为我的主管选择了这个特殊的项目作为毕业项目。

然而,我遇到了很多困难,主要的一个问题是如何将两线元素(TLE)信息转换为经度纬度和海拔高度,以便在地图上显示卫星和卫星路径。

我尝试了以下C#代码:

protected void DisplaySatellitePath(List<Eci> Pos)
{
  MapLayer myRouteLayer = new MapLayer();
  myMap.Children.Add(myRouteLayer);

  foreach (Eci e in Pos)
  {
    CoordGeo coordinates = e.toGeo();

    Ellipse point = new Ellipse();
    point.Width = 10;
    point.Height = 10;
    point.Fill = new SolidColorBrush(Colors.Orange);
    point.Opacity = 0.65;

    //Location location = new Location(e.Position.X, e.Position.X);
    Location location = new Location(coordinates.Latitude, coordinates.Longitude);

    MapLayer.SetPosition(point, location);
    MapLayer.SetPositionOrigin(point, PositionOrigin.Center);
    myRouteLayer.Children.Add(point);
  }
}

并尝试了

protected void DisplaySatellitePathSecondGo(List<Eci> Pos)
  {
  MapLayer myRouteLayer = new MapLayer();
  myMap.Children.Add(myRouteLayer);

  foreach (Eci e in Pos)
  { 

    Ellipse point = new Ellipse();

    point.Width = 10;
    point.Height = 10;
    point.Fill = new SolidColorBrush(Colors.Yellow);
    point.Opacity = 0.65;

    Site siteEquator = new Site(e.Position.X, e.Position.Y, e.Position.Z); 
    Location location = new Location(siteEquator.Latitude, siteEquator.Longitude);
    MapLayer.SetPosition(point, location);
    MapLayer.SetPositionOrigin(point, PositionOrigin.Center);
    myRouteLayer.Children.Add(point);
  }
}
你能告诉我这里我做错了什么吗?我在网上搜索了关于OrbitTools的例子或文件,但没有运气。

我真的希望有人使用这个库可以帮助我或建议一个更好的.NET库。

非常感谢。

1 个答案:

答案 0 :(得分:2)

这仍然是你正在努力的事吗?我注意到当我下载代码时,他们有一个他们提供的演示程序以及库。在其中,他们展示了以下方法,我相信你一定要看一下:

static void PrintPosVel(Tle tle)       {          轨道轨道=新轨道(tle);          ArrayList Pos = new ArrayList();

     // Calculate position, velocity
     // mpe = "minutes past epoch"
     for (int mpe = 0; mpe <= (360 * 4); mpe += 360)
     {
        // Get the position of the satellite at time "mpe".
        // The coordinates are placed into the variable "eci".
        Eci eci = orbit.getPosition(mpe);

        // Push the coordinates object onto the end of the array
        Pos.Add(eci);
     }

     // Print TLE data
     Console.Write("{0}\n", tle.Name);
     Console.Write("{0}\n", tle.Line1);
     Console.Write("{0}\n", tle.Line2);

     // Header
     Console.Write("\n  TSINCE            X                Y                Z\n\n");

     // Iterate over each of the ECI position objects pushed onto the
     // position vector, above, printing the ECI position information
     // as we go.
     for (int i = 0; i < Pos.Count; i++)
     {
        Eci e = Pos[i] as Eci;

        Console.Write("{0,4}.00 {1,16:f8} {2,16:f8} {3,16:f8}\n",
                      i * 360,
                      e.Position.X,
                      e.Position.Y,
                      e.Position.Z);
     }

     Console.Write("\n                  XDOT             YDOT             ZDOT\n\n");

     // Iterate over each of the ECI position objects in the position
     // vector again, but this time print the velocity information.
     for (int i = 0; i < Pos.Count; i++)
     {
        Eci e = Pos[i] as Eci;

        Console.Write("{0,24:f8} {1,16:f8} {2,16:f8}\n",
                      e.Velocity.X,
                      e.Velocity.Y,
                      e.Velocity.Z);
     }
  }

在这看来他们正在进行你正在寻找的转换。我错过了你实际遇到的问题吗?