Description

Object Model

Public Methods

Propagate

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

Public Properties

EphemerisInterval	The propagator's ephemeris interval.
ForceModel	Get the force model parameters.
InitialState	Get the initial state.
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.

Interfaces

Example

Configure the LOP propagator

[C#]

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// Set satellite propagator to LOP  satellite.SetPropagatorType(AgEVePropagatorType.ePropagatorLOP);    // Get IAgVePropagatorLOP interface  IAgVePropagatorLOP lopProp = satellite.Propagator as IAgVePropagatorLOP;    // Configure time period  lopProp.EphemerisInterval.SetExplicitInterval("1 Jan 2012 12:00:00.000", "2 Jan 2012 12:00:00.000");  lopProp.Step = 86400;    // Configure propagator initial state  IAgOrbitState orbit = lopProp.InitialState.Representation;  orbit.Epoch = "1 Jan 2012 12:00:00.000";  orbit.AssignCartesian(      AgECoordinateSystem.eCoordinateSystemFixed,      -1120.32,          // in km (assuming unit preferences set to km)      -9520.84,         // in km      0.129,      // in km      2.155,      // in km/sec (assuming unit preferences set to km/sec)      -1.54416,      // in km/sec      5.668412);     // in km/sec    // Configure force model  IAgVeLOPForceModel lopForceModel = lopProp.ForceModel;  lopForceModel.CentralBodyGravity.MaxDegree = 15;  lopForceModel.CentralBodyGravity.MaxOrder = 8;  lopForceModel.Drag.Use = true;  lopForceModel.Drag.Cd = 3.55;  lopForceModel.SolarRadiationPressure.Use = true;  lopForceModel.SolarRadiationPressure.Cp = 1.1250;  lopForceModel.SolarRadiationPressure.AtmosHeight = 125;  lopForceModel.PhysicalData.DragCrossSectionalArea = 0.001555512;  lopForceModel.PhysicalData.SRPCrossSectionalArea = 0.001810026;  lopForceModel.PhysicalData.SatelliteMass = 1505.001;    // Propagate  lopProp.Propagate();

Set the satellite to use the LOP propagator

[C#]	Copy Code
// Set satellite propagator to LOP  satellite.SetPropagatorType(AgEVePropagatorType.ePropagatorLOP);    // Get the LOP propagator  IAgVePropagatorLOP propagator = satellite.Propagator as IAgVePropagatorLOP;

Configure the LOP propagator

[Visual Basic .NET]

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' Set satellite propagator to LOP satellite.SetPropagatorType(AgEVePropagatorType.ePropagatorLOP) ' Get IAgVePropagatorLOP interface Dim lopProp As IAgVePropagatorLOP = TryCast(satellite.Propagator, IAgVePropagatorLOP) ' Configure time period lopProp.EphemerisInterval.SetExplicitInterval("1 Jan 2012 12:00:00.000", "2 Jan 2012 12:00:00.000") lopProp.[Step] = 86400 ' Configure propagator initial state Dim orbit As IAgOrbitState = lopProp.InitialState.Representation orbit.Epoch = "1 Jan 2012 12:00:00.000" ' in km (assuming unit preferences set to km) ' in km ' in km ' in km/sec (assuming unit preferences set to km/sec) ' in km/sec orbit.AssignCartesian(AgECoordinateSystem.eCoordinateSystemFixed, -1120.32, -9520.84, 0.129, 2.155, -1.54416, _     5.668412) ' in km/sec ' Configure force model Dim lopForceModel As IAgVeLOPForceModel = lopProp.ForceModel lopForceModel.CentralBodyGravity.MaxDegree = 15 lopForceModel.CentralBodyGravity.MaxOrder = 8 lopForceModel.Drag.Use = True lopForceModel.Drag.Cd = 3.55 lopForceModel.SolarRadiationPressure.Use = True lopForceModel.SolarRadiationPressure.Cp = 1.125 lopForceModel.SolarRadiationPressure.AtmosHeight = 125 lopForceModel.PhysicalData.DragCrossSectionalArea = 0.001555512 lopForceModel.PhysicalData.SRPCrossSectionalArea = 0.001810026 lopForceModel.PhysicalData.SatelliteMass = 1505.001 ' Propagate lopProp.Propagate()

Set the satellite to use the LOP propagator

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

CoClasses that Implement IAgVePropagatorLOP