org.orekit.propagation.semianalytical.dsst.forces
public class DSSTSolarRadiationPressure extends AbstractGaussianContribution
DSSTPropagator
.
The solar radiation pressure acceleration is computed as follows:
γ = (CR A / m) * (pref * d2ref) *
(rsat - Rsun) / |rsat - Rsun|3
Constructor and Description |
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DSSTSolarRadiationPressure(double dRef,
double pRef,
double cr,
double area,
PVCoordinatesProvider sun,
double equatorialRadius)
Complete constructor.
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DSSTSolarRadiationPressure(double cr,
double area,
PVCoordinatesProvider sun,
double equatorialRadius)
Simple constructor with default reference values.
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Modifier and Type | Method and Description |
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protected Vector3D |
getAcceleration(SpacecraftState state,
Vector3D position,
Vector3D velocity)
Compute the acceleration due to the non conservative perturbing force.
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double |
getArea()
Get the cross sectional area of satellite.
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double |
getCr()
Get the satellite radiation pressure coefficient (assuming total specular reflection).
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double |
getEquatorialRadius()
Get the central body equatorial radius.
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EventDetector[] |
getEventsDetectors()
Get the discrete events related to the model.
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protected double[] |
getLLimits(SpacecraftState state)
Compute the limits in L, the true longitude, for integration.
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double[] |
getShortPeriodicVariations(AbsoluteDate date,
double[] meanElements)
Computes the short periodic variations.
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getMeanElementRate, initialize, initializeStep
public DSSTSolarRadiationPressure(double cr, double area, PVCoordinatesProvider sun, double equatorialRadius)
When this constructor is used, the reference values are:
cr
- satellite radiation pressure coefficient (assuming total specular reflection)area
- cross sectionnal area of satellitesun
- Sun modelequatorialRadius
- central body equatorial radius (for shadow computation)public DSSTSolarRadiationPressure(double dRef, double pRef, double cr, double area, PVCoordinatesProvider sun, double equatorialRadius)
Note that reference solar radiation pressure pRef
in N/m2 is linked
to solar flux SF in W/m2 using formula pRef = SF/c where c is the speed of light
(299792458 m/s). So at 1UA a 1367 W/m2 solar flux is a 4.56 10-6
N/m2 solar radiation pressure.
dRef
- reference distance for the solar radiation pressure (m)pRef
- reference solar radiation pressure at dRef (N/m2)cr
- satellite radiation pressure coefficient (assuming total specular reflection)area
- cross sectionnal area of satellitesun
- Sun modelequatorialRadius
- central body equatrial radius (for shadow computation)public double[] getShortPeriodicVariations(AbsoluteDate date, double[] meanElements) throws OrekitException
date
- current datemeanElements
- mean elements at current dateOrekitException
- if some specific error occurspublic EventDetector[] getEventsDetectors()
protected Vector3D getAcceleration(SpacecraftState state, Vector3D position, Vector3D velocity) throws OrekitException
getAcceleration
in class AbstractGaussianContribution
state
- current state information: date, kinematics, attitudeposition
- spacecraft positionvelocity
- spacecraft velocityOrekitException
- if some specific error occursprotected double[] getLLimits(SpacecraftState state) throws OrekitException
getLLimits
in class AbstractGaussianContribution
state
- current state information: date, kinematics, attitudeOrekitException
- if some specific error occurspublic double getEquatorialRadius()
public double getCr()
public double getArea()
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