Description

Object Model

Public Methods

Propagate

Propagates the satellite's path using the specified time interval.

Public Properties

AutoUpdate	Allows configuring the auto-update parameters and settings. AutoUpdateEnabled must be set to true in order to be able to change the auto-update properties.
AutoUpdateEnabled	Whether automatic update is enabled.
AvailablePRNs	Returns an array of available satellite Ids
EphemerisInterval	The propagator's ephemeris interval.
PRN	The satellite PRN number per ICD-GPS-200. This is a required data item as it is the GPS user's primary means of identifying GPS satellites. It is equivalent to the space vehicle identification (SVID) number of the satellite.
SpecifyCatalog	Specify a catalog. AutoUpdateEnabled must be set to false in order to select an almanac.
StartTime	This property is deprecated. Use EphemerisInterval to configure the propagation interval. Start time. Uses DateFormat Dimension.
Step	Step size. Uses Time Dimension.
StopTime	This property is deprecated. Use EphemerisInterval to configure the propagation interval. Stop time. Uses DateFormat Dimension.
UseScenarioAnalysisTime	This property is deprecated. Use the new Timeline API components to configure the propagator's analysis time. Whether the scenario analysis start/stop times shall be used.

Interfaces

Example

Configure the GPS propagator with an almanac

[C#]

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// Configure properties  // Use the scenario's analysis interval  propagator.EphemerisInterval.SetImplicitInterval(scenario.Vgt.EventIntervals["AnalysisInterval"]);    // PRN must be set before configuring GPS almanac  propagator.PRN = Int32.Parse((string)propagator.AvailablePRNs.GetValue(0));    // Turn the Auto-update off  propagator.AutoUpdateEnabled = false;    // Specify a catalog  propagator.SpecifyCatalog.Filename = almanacPath;    // Configure the properties specific to the chosen almanac  switch (propagator.SpecifyCatalog.Properties.Type)  {      case AgEVeGPSAlmanacType.eGPSAlmanacTypeSEM:          {              /* configure the SEM almanac */              IAgVeGPSAlmanacPropertiesSEM sem = propagator.SpecifyCatalog.Properties as IAgVeGPSAlmanacPropertiesSEM;              sem.ReferenceWeek = AgEGPSReferenceWeek.eGPSReferenceWeek22Aug1999;              break;          }      case AgEVeGPSAlmanacType.eGPSAlmanacTypeSP3:          {              /* SP3 almanac contains no configurable properties */              IAgVeGPSAlmanacPropertiesSP3 sp3 = propagator.SpecifyCatalog.Properties as IAgVeGPSAlmanacPropertiesSP3;              break;          }      case AgEVeGPSAlmanacType.eGPSAlmanacTypeYUMA:          {              /* configure the YUMA almanac */              IAgVeGPSAlmanacPropertiesYUMA yuma = propagator.SpecifyCatalog.Properties as IAgVeGPSAlmanacPropertiesYUMA;              yuma.ReferenceWeek = AgEGPSReferenceWeek.eGPSReferenceWeek22Aug1999;              break;          }  }    // Propagate  propagator.Propagate();

Set the satellite to use the GPS propagator

[C#]	Copy Code
// Set propagator to GPS  satellite.SetPropagatorType(AgEVePropagatorType.ePropagatorGPS);    // Get the GPS propagator  IAgVePropagatorGPS propagator = satellite.Propagator as IAgVePropagatorGPS;

Configure the GPS propagator with an almanac

[Visual Basic .NET]

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' Configure properties ' Use the scenario's analysis interval propagator.EphemerisInterval.SetImplicitInterval(scenario.Vgt.EventIntervals("AnalysisInterval")) ' PRN must be set before configuring GPS almanac propagator.PRN = Int32.Parse(DirectCast(propagator.AvailablePRNs.GetValue(0), String)) ' Turn the Auto-update off propagator.AutoUpdateEnabled = False ' Specify a catalog propagator.SpecifyCatalog.Filename = almanacPath ' Configure the properties specific to the chosen almanac Select Case propagator.SpecifyCatalog.Properties.Type     Case AgEVeGPSAlmanacType.eGPSAlmanacTypeSEM         If True Then             ' configure the SEM almanac             Dim sem As IAgVeGPSAlmanacPropertiesSEM = TryCast(propagator.SpecifyCatalog.Properties, IAgVeGPSAlmanacPropertiesSEM)             sem.ReferenceWeek = AgEGPSReferenceWeek.eGPSReferenceWeek22Aug1999             Exit Select         End If     Case AgEVeGPSAlmanacType.eGPSAlmanacTypeSP3         If True Then             ' SP3 almanac contains no configurable properties             Dim sp3 As IAgVeGPSAlmanacPropertiesSP3 = TryCast(propagator.SpecifyCatalog.Properties, IAgVeGPSAlmanacPropertiesSP3)             Exit Select         End If     Case AgEVeGPSAlmanacType.eGPSAlmanacTypeYUMA         If True Then             ' configure the YUMA almanac             Dim yuma As IAgVeGPSAlmanacPropertiesYUMA = TryCast(propagator.SpecifyCatalog.Properties, IAgVeGPSAlmanacPropertiesYUMA)             yuma.ReferenceWeek = AgEGPSReferenceWeek.eGPSReferenceWeek22Aug1999             Exit Select         End If End Select ' Propagate propagator.Propagate()

Set the satellite to use the GPS propagator

[Visual Basic .NET]	Copy Code
' Set propagator to GPS satellite.SetPropagatorType(AgEVePropagatorType.ePropagatorGPS) ' Get the GPS propagator Dim propagator As IAgVePropagatorGPS = TryCast(satellite.Propagator, IAgVePropagatorGPS)

CoClasses that Implement IAgVePropagatorGPS