/// <summary>
/// Creates a new instance of our receiving phone
/// with default configuration and graphics.
/// </summary>
/// <returns>A new SimpleReceiver.</returns>
private SimpleReceiver CreateReceivingPhone()
{
var earth = CentralBodiesFacet.GetFromContext().Earth;
// Create a receiving phone with a gain of 100 and a noisefactor of 2 - adding 290 Kelvin worth of noise to the call.
// Even though we are using a static location for our receiver,
// it can easily be changed to a moving one by simply modifying the
// LocationPoint to something else, for example a route generated
// with the Route Design Library.
double longitude = Trig.DegreesToRadians(77.5833);
double latitude = Trig.DegreesToRadians(12.9833);
var phone = new SimpleReceiver
{
Name = "Bangalore, India",
LocationPoint = new PointCartographic(earth, new Cartographic(longitude, latitude, 0)),
Gain = 100.0,
NoiseFactor = 2.0,
TargetFrequency = m_intendedSignal.TargetFrequency
};
//Add a default marker
phone.Extensions.Add(new MarkerGraphicsExtension(new MarkerGraphics
{
Texture = new ConstantGraphicsParameter <Texture2D>(m_phoneTexture)
}));
//Add a label based on the name and show just below the marker.
var textGraphics = new TextGraphics
{
Color = new ConstantGraphicsParameter <Color>(Color.Yellow),
Font = new ConstantGraphicsParameter <Font>(m_labelFont),
Outline = new ConstantGraphicsParameter <bool>(true),
OutlineColor = new ConstantGraphicsParameter <Color>(Color.Black),
Text = new ConstantGraphicsParameter <string>(phone.Name),
Origin = new ConstantGraphicsParameter <Origin>(Origin.TopCenter),
PixelOffset = new ConstantGraphicsParameter <PointF>(new PointF(0, -m_phoneTexture.Template.Height / 2)),
DisplayParameters =
{
MaximumDistance = new ConstantGraphicsParameter <double>(75000000.0)
}
};
if (TextureFilter2D.Supported(TextureWrap.ClampToEdge))
{
textGraphics.TextureFilter = new ConstantGraphicsParameter <TextureFilter2D>(TextureFilter2D.NearestClampToEdge);
}
phone.Extensions.Add(new TextGraphicsExtension(textGraphics));
return(phone);
}
/// <summary>
/// Creates a new instance of our transmitting phone
/// with default configuration and graphics.
/// </summary>
/// <returns>A new SimpleDigitalTransmitter.</returns>
private SimpleDigitalTransmitter CreateTransmittingPhone()
{
var earth = CentralBodiesFacet.GetFromContext().Earth;
// Create a new SimpleDigitalTransmitter and assign its basic properties.
// Even though we are using a static location for our transmitter,
// it can easily be changed to a moving one by simply modifying the
// LocationPoint to something else, for example a route generated
// with the Route Design Library.
double longitude = Trig.DegreesToRadians(39.6333);
double latitude = Trig.DegreesToRadians(11.1333);
var phone = new SimpleDigitalTransmitter
{
Name = "Dessie, Ethiopia",
LocationPoint = new PointCartographic(earth, new Cartographic(longitude, latitude, 0.0)),
CarrierFrequency = m_intendedSignal.TargetFrequency,
EffectiveIsotropicRadiatedPower = CommunicationAnalysis.FromDecibels(m_transmitPowerTrackBar.Value),
DataRate = 50000.0
};
//Add a default marker
phone.Extensions.Add(new MarkerGraphicsExtension(new MarkerGraphics
{
Texture = new ConstantGraphicsParameter <Texture2D>(m_phoneTexture)
}));
//Add a label based on the name and show just below the marker.
var textGraphics = new TextGraphics
{
Color = new ConstantGraphicsParameter <Color>(Color.Yellow),
Font = new ConstantGraphicsParameter <Font>(m_labelFont),
Outline = new ConstantGraphicsParameter <bool>(true),
OutlineColor = new ConstantGraphicsParameter <Color>(Color.Black),
Text = new ConstantGraphicsParameter <string>(phone.Name),
Origin = new ConstantGraphicsParameter <Origin>(Origin.TopCenter),
PixelOffset = new ConstantGraphicsParameter <PointF>(new PointF(0, -m_phoneTexture.Template.Height / 2)),
DisplayParameters =
{
MaximumDistance = new ConstantGraphicsParameter <double>(75000000.0)
}
};
if (TextureFilter2D.Supported(TextureWrap.ClampToEdge))
{
textGraphics.TextureFilter = new ConstantGraphicsParameter <TextureFilter2D>(TextureFilter2D.NearestClampToEdge);
}
phone.Extensions.Add(new TextGraphicsExtension(textGraphics));
return(phone);
}
/// <summary>
/// Creates a new instance. Font, Name and LinkScalars properties must be specified.
/// </summary>
public LinkBudgetOverlayHelper(Font font)
{
m_font = font;
// GraphicsParameterFormatter is part of Platform.Graphics and
// optimizes dynamic text generation by only recalculating
// values as they are needed. For example, if a field is not,
// time varying, it will never evaluate it more than once.
m_formatter = new GraphicsParameterFormatter
{
// Specify a format string that provides the output we want.
FormatString = @"Name: {0}
Effective Isotropic Radiated Power: {1:0.000} dBW
Received Isotropic Power: {2:0.000} dBW
Power At Receiver Output: {3:0.000} dBW
Received Power Flux Density: {4:0.000} dBW/m^2
Propagation Loss: {5:0.000} dB
Carrier To Noise Density: {6:0.000} dB*Hz
Carrier To Noise: {7:0.000} dB
Energy Per Bit To Noise Density: {8:0.000} dB
Bit Error Rate: {9:0.###E+000}"
};
// Create a screen overlay with a translucent background to make the
// text easier to read.
m_overlay = new ScreenOverlay(0.0, 0.0, 1.0, 1.0)
{
Color = Color.Black,
Translucency = 0.5f,
Origin = ScreenOverlayOrigin.TopLeft
};
// Create a child overlay for our background to write text on.
m_textOverlay = new TextureScreenOverlay(0.0, 0.0, 1.0, 1.0)
{
Origin = ScreenOverlayOrigin.Center,
Color = Color.Yellow
};
m_overlay.Overlays.Add(m_textOverlay);
if (TextureFilter2D.Supported(TextureWrap.ClampToEdge))
{
m_textOverlay.TextureFilter = TextureFilter2D.NearestClampToEdge;
}
}
/// <summary>
/// Creates a new instance with the provided properties.
/// </summary>
public IridiumSatellite(string name, IEnumerable <TwoLineElementSet> tles, Font font, double targetFrequency)
{
var earth = CentralBodiesFacet.GetFromContext().Earth;
//Set the name and create the point from the TLE.
Name = name;
LocationPoint = new Sgp4Propagator(tles).CreatePoint();
OrientationAxes = new AxesVehicleVelocityLocalHorizontal(earth.InertialFrame, LocationPoint);
//Create a transceiver modeled after Iridium specs.
m_transceiver = new Transceiver
{
Name = Name + " Transceiver",
Modulation = new ModulationQpsk(),
OutputGain = 100.0,
OutputNoiseFactor = 1.2,
CarrierFrequency = targetFrequency,
Filter = new RectangularFilter
{
Frequency = targetFrequency,
UpperBandwidthLimit = 20.0e6,
LowerBandwidthLimit = -20.0e6
},
InputAntennaGainPattern = new GaussianGainPattern(1.0, 0.55, 0.001),
OutputAntennaGainPattern = new GaussianGainPattern(1.0, 0.55, 0.001)
};
m_transceiver.InputAntenna.LocationPoint = new PointFixedOffset(ReferenceFrame, new Cartesian(0, -1.0, 0));
m_transceiver.OutputAntenna.LocationPoint = new PointFixedOffset(ReferenceFrame, new Cartesian(0, +1.0, 0));
// setup Marker graphics for the satellites
var satelliteTexture = SceneManager.Textures.FromUri(Path.Combine(Application.StartupPath, "Data/Markers/smallsatellite.png"));
m_markerGraphicsExtension = new MarkerGraphicsExtension(new MarkerGraphics
{
Texture = new ConstantGraphicsParameter <Texture2D>(satelliteTexture),
DisplayParameters = new DisplayParameters
{
// hide marker when camera is closer than the below distance
MinimumDistance = new ConstantGraphicsParameter <double>(17500000.0)
}
});
Extensions.Add(m_markerGraphicsExtension);
// setup Model graphics for the satellites
var modelUri = new Uri(Path.Combine(Application.StartupPath, "Data/Models/iridium.mdl"));
m_modelGraphicsExtension = new ModelGraphicsExtension(new ModelGraphics
{
Uri = new ConstantGraphicsParameter <Uri>(modelUri),
Scale = new ConstantGraphicsParameter <double>(50000.0),
DisplayParameters = new DisplayParameters
{
// hide model when camera is further than the marker minimum distance above
MaximumDistance = m_markerGraphicsExtension.MarkerGraphics.DisplayParameters.MinimumDistance
}
});
Extensions.Add(m_modelGraphicsExtension);
// setup text graphics for the satellites
m_textGraphicsExtension = new TextGraphicsExtension(new TextGraphics
{
Color = new ConstantGraphicsParameter <Color>(Color.Red),
Font = new ConstantGraphicsParameter <Font>(font),
Outline = new ConstantGraphicsParameter <bool>(true),
OutlineColor = new ConstantGraphicsParameter <Color>(Color.Black),
Text = new ConstantGraphicsParameter <string>(Name),
Origin = new ConstantGraphicsParameter <Origin>(Origin.TopCenter),
PixelOffset = new ConstantGraphicsParameter <PointF>(new PointF(0, -satelliteTexture.Template.Height / 2))
});
if (TextureFilter2D.Supported(TextureWrap.ClampToEdge))
{
m_textGraphicsExtension.TextGraphics.TextureFilter = new ConstantGraphicsParameter <TextureFilter2D>(TextureFilter2D.NearestClampToEdge);
}
Extensions.Add(m_textGraphicsExtension);
}
