User Manual 4.0 Force models - Historique des versions

Admin : /* Variable potential models */

2018-03-16T13:23:08Z

Variable potential models

@@ Ligne 254 : / Ligne 254 : @@
 The user specifies, with the computeAtEachCall boolean set to true, if corrections are to be recomputed each time.
 <syntaxhighlight lang="java">
 // Get the variable potential data provider

Admin : /* Static potential models */

2018-03-16T13:20:22Z

Static potential models

← Version précédente		Version du 16 mars 2018 à 13:20
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	The <code>grav</code> force model can then be used with the numerical propagator.		The <code>grav</code> force model can then be used with the numerical propagator.

	~~=== Static potential models ===~~
	The data is read through the Orekit <code>DataLoader</code> infrastructure; it provides several ways to load gravitational data. Please see the [[User Manual 4.0 Data management system\|Data Management System]] section for more information.

	The user access point is the <code>GravityFieldFactory</code> which automatically detects available files and uses the adequate loader. If no file is specified by the user, this factory uses the first available file.

	~~The normalized attraction model is more accurate that the unnormalized attraction models in that it allows computing gravity fields to a much higher degree / order.~~

	'''Warning''': using a 0x0 Earth potential model (Cunningham, Drozyner, Balmino, etc.) is equivalent to a simple Newtonian attraction. However computation times will be much slower since this case is not particularized and hence conversion from body frame (often ITRF) to integration frame is necessary.

	=== Variable potential models ===		=== Variable potential models ===

Admin : /* Static potential models */

2018-03-16T13:19:02Z

Static potential models

← Version précédente		Version du 16 mars 2018 à 13:19
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	=== Static potential models ===		=== Static potential models ===
	The data is read through the Orekit <code>DataLoader</code> infrastructure; it provides several ways to load gravitational data. Please see the [~~SUP_DMS_Home~~ Data Management System] section for more information.		The data is read through the Orekit <code>DataLoader</code> infrastructure; it provides several ways to load gravitational data. Please see the [[User Manual 4.0 Data management system\|Data Management System]] section for more information.

	The user access point is the <code>GravityFieldFactory</code> which automatically detects available files and uses the adequate loader. If no file is specified by the user, this factory uses the first available file.		The user access point is the <code>GravityFieldFactory</code> which automatically detects available files and uses the adequate loader. If no file is specified by the user, this factory uses the first available file.

Admin : /* Variable potential models */

2018-03-16T13:18:02Z

Variable potential models

← Version précédente		Version du 16 mars 2018 à 13:18
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	==== Variable potential models ====		==== Variable potential models ====

	The data is read through the Orekit <code>DataLoader</code> infrastructure; it provides several ways to load gravitational data. Please see the [[User Manual 3.4.1 Data management system\|Data Management System section]] for more information.		The data is read through the Orekit <code>DataLoader</code> infrastructure; it provides several ways to load gravitational data. Please see the [[User Manual 4.0 Data management system\|Data Management System section]] for more information.

	The user access point is the <code>VariableGravityFieldFactory</code> which automatically detects available files and uses the adequate loader. If no file is specified by the user, this factory uses the first available file.		The user access point is the <code>VariableGravityFieldFactory</code> which automatically detects available files and uses the adequate loader. If no file is specified by the user, this factory uses the first available file.

Admin : /* Available force models */

2018-03-16T13:16:57Z

Available force models

Voir les modifications

Admin : /* Gravity potential */

2018-03-16T13:06:42Z

Gravity potential

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 === Gravity potential ===
 === Static potential models ===
 The data is read through the Orekit <code>DataLoader</code> infrastructure; it provides several ways to load gravitational data. Please see the [SUP_DMS_Home Data Management System] section for more information.

Admin : /* Interfaces */

2018-02-26T14:03:45Z

Interfaces

← Version précédente		Version du 26 février 2018 à 14:03
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	! scope="col"\| Javadoc		! scope="col"\| Javadoc
	\|-		\|-
	\|**ForceModel		\|'''ForceModel'''
	\|This interface represents a force modifying spacecraft motion.		\|This interface represents a force modifying spacecraft motion.
	\|[{{JavaDoc4.0}}/fr/cnes/sirius/patrius/forces/ForceModel.html ...]		\|[{{JavaDoc4.0}}/fr/cnes/sirius/patrius/forces/ForceModel.html ...]
	\|-		\|-
	\|**GradientModel		\|'''GradientModel'''
	\|This interface provides information about partial dérivatives computation.		\|This interface provides information about partial dérivatives computation.
	\|[{{JavaDoc4.0}}/fr/cnes/sirius/patrius/forces/GradientModel.html ...]		\|[{{JavaDoc4.0}}/fr/cnes/sirius/patrius/forces/GradientModel.html ...]
	\|-		\|-
	\|**AttractionModel		\|'''AttractionModel'''
	\|This interface represents a gravitational attraction force model.		\|This interface represents a gravitational attraction force model.
	\|[{{JavaDoc4.0}}/fr/cnes/sirius/patrius/forces/gravity/AttractionModel.html ...]		\|[{{JavaDoc4.0}}/fr/cnes/sirius/patrius/forces/gravity/AttractionModel.html ...]
	\|-		\|-
	\|**RadiationSensitive		\|'''RadiationSensitive'''
	\|This interface is used to provide an direct solar radiative pressure model.		\|This interface is used to provide an direct solar radiative pressure model.
	\|[{{JavaDoc4.0}}/fr/cnes/sirius/patrius/forces/radiation/RadiationSensitive.html ...]		\|[{{JavaDoc4.0}}/fr/cnes/sirius/patrius/forces/radiation/RadiationSensitive.html ...]
	\|-		\|-
	\|**RediffusedRadiationSensitive		\|'''RediffusedRadiationSensitive'''
	\|This interface is used to provide an rediffused radiative pressure model.		\|This interface is used to provide an rediffused radiative pressure model.
	\|[{{JavaDoc4.0}}/fr/cnes/sirius/patrius/forces/radiation/RediffusedRadiationSensitive.html ...]		\|[{{JavaDoc4.0}}/fr/cnes/sirius/patrius/forces/radiation/RediffusedRadiationSensitive.html ...]

Admin le 21 février 2018 à 14:23

2018-02-21T14:23:47Z

← Version précédente		Version du 21 février 2018 à 14:23
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	* fai_daccdd		* fai_daccdd

	The method used to compute the resulting acceleration is the same as that used in the [{{~~PathCurrentJavaDoc~~}}/fr/cnes/sirius/patrius/forces/gravity/CunninghamAttractionModel.html Cunnigham attraction model].		The method used to compute the resulting acceleration is the same as that used in the [{{JavaDoc4.0}}/fr/cnes/sirius/patrius/forces/gravity/CunninghamAttractionModel.html Cunnigham attraction model].

	'''Other Documents'''		'''Other Documents'''
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	[[File:Parameters.png\|center\|950]]		[[File:Parameters.png\|center\|950]]

	All parameters are handled in a the [{{~~PathCurrentJavaDoc~~}}/fr/cnes/sirius/patrius/math/parameter/Parameterizable.html Parameterizable] class.<br>		All parameters are handled in a the [{{JavaDoc4.0}}/fr/cnes/sirius/patrius/math/parameter/Parameterizable.html Parameterizable] class.<br>
	In case of a using a function for a model's paramater (Fx), the [{{~~PathCurrentJavaDoc~~}}/fr/cnes/sirius/patrius/math/parameter/Parameter.html Parameter] defined are automatically stored in the super class [{{~~PathCurrentJavaDoc~~}}/fr/cnes/sirius/patrius/math/parameter/Parameterizable.html Parameterizable]. <br>		In case of a using a function for a model's paramater (Fx), the [{{JavaDoc4.0}}/fr/cnes/sirius/patrius/math/parameter/Parameter.html Parameter] defined are automatically stored in the super class [{{JavaDoc4.0}}/fr/cnes/sirius/patrius/math/parameter/Parameterizable.html Parameterizable]. <br>
	Note that in this case, it is not Fx that is stored but ax and bx (with Fx = ax*t + bx).		Note that in this case, it is not Fx that is stored but ax and bx (with Fx = ax*t + bx).

	==== Tides ====		==== Tides ====

	The architecture of the <code>fr.cnes.sirius.patrius.forces.gravity.tides</code> package is given hereunder. The classes [{{~~PathCurrentJavaDoc~~}}/fr/cnes/sirius/patrius/forces/gravity/tides/OceanTides.html OceanTides] and [{{~~PathCurrentJavaDoc~~}}/fr/cnes/sirius/patrius/forces/gravity/tides/TerrestrialTides.html TerrestrialTides] extend [{{~~PathCurrentJavaDoc~~}}/fr/cnes/sirius/patrius/forces/gravity/tides/AbstractTides.html AbstractTides].		The architecture of the <code>fr.cnes.sirius.patrius.forces.gravity.tides</code> package is given hereunder. The classes [{{JavaDoc4.0}}/fr/cnes/sirius/patrius/forces/gravity/tides/OceanTides.html OceanTides] and [{{JavaDoc4.0}}/fr/cnes/sirius/patrius/forces/gravity/tides/TerrestrialTides.html TerrestrialTides] extend [{{JavaDoc4.0}}/fr/cnes/sirius/patrius/forces/gravity/tides/AbstractTides.html AbstractTides].

	[[File:Tides.png\|center]]		[[File:Tides.png\|center]]

	The architecture of the <code>fr.cnes.sirius.patrius.forces.gravity.tides.coefficients</code> package is given hereunder. The user must use the [{{~~PathCurrentJavaDoc~~}}/fr/cnes/sirius/patrius/forces/gravity/tides/coefficients/OceanTidesCoefficientsFactory.html OceanTidesCoefficientsFactory class] to get an instance of the OceanTidesCoefficientsProvider interface, and pass it as an argument to the constructor of the [{{~~PathCurrentJavaDoc~~}}/fr/cnes/sirius/patrius/forces/gravity/tides/OceanTidesDataProvider.html OceanTidesDataProvider class].		The architecture of the <code>fr.cnes.sirius.patrius.forces.gravity.tides.coefficients</code> package is given hereunder. The user must use the [{{JavaDoc4.0}}/fr/cnes/sirius/patrius/forces/gravity/tides/coefficients/OceanTidesCoefficientsFactory.html OceanTidesCoefficientsFactory class] to get an instance of the OceanTidesCoefficientsProvider interface, and pass it as an argument to the constructor of the [{{JavaDoc4.0}}/fr/cnes/sirius/patrius/forces/gravity/tides/OceanTidesDataProvider.html OceanTidesDataProvider class].

	[[File:TidesCoeffs2.png\|center]]		[[File:TidesCoeffs2.png\|center]]
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	</syntaxhighlight>		</syntaxhighlight>

	The [{{~~PathCurrentJavaDoc~~}}/fr/cnes/sirius/patrius/forces/gravity/tides/OceanTides.html OceanTides] uses a [{{~~PathCurrentJavaDoc~~}}/fr/cnes/sirius/patrius/forces/gravity/tides/OceanTidesDataProvider.html OceanTidesDataProvider] which uses itself a [{{~~PathCurrentJavaDoc~~}}/fr/cnes/sirius/patrius/forces/gravity/tides/coefficients/OceanTidesCoefficientsProvider.html OceanTidesCoefficientsProvider], such as the [{{~~PathCurrentJavaDoc~~}}/fr/cnes/sirius/patrius/forces/gravity/tides/coefficients/FES2004FormatReader.html FES 2004 format reader class], and calls the <code>getCpmSpm(double, double, double)</code> methods internally. When the user has created an instance of the [{{~~PathCurrentJavaDoc~~}}/fr/cnes/sirius/patrius/forces/gravity/tides/OceanTidesDataProvider.html OceanTidesDataProvider] class, he can pass it on to the constructor of [{{~~PathCurrentJavaDoc~~}}/fr/cnes/sirius/patrius/forces/gravity/tides/OceanTides.html OceanTides], like so :		The [{{JavaDoc4.0}}/fr/cnes/sirius/patrius/forces/gravity/tides/OceanTides.html OceanTides] uses a [{{JavaDoc4.0}}/fr/cnes/sirius/patrius/forces/gravity/tides/OceanTidesDataProvider.html OceanTidesDataProvider] which uses itself a [{{JavaDoc4.0}}/fr/cnes/sirius/patrius/forces/gravity/tides/coefficients/OceanTidesCoefficientsProvider.html OceanTidesCoefficientsProvider], such as the [{{JavaDoc4.0}}/fr/cnes/sirius/patrius/forces/gravity/tides/coefficients/FES2004FormatReader.html FES 2004 format reader class], and calls the <code>getCpmSpm(double, double, double)</code> methods internally. When the user has created an instance of the [{{JavaDoc4.0}}/fr/cnes/sirius/patrius/forces/gravity/tides/OceanTidesDataProvider.html OceanTidesDataProvider] class, he can pass it on to the constructor of [{{JavaDoc4.0}}/fr/cnes/sirius/patrius/forces/gravity/tides/OceanTides.html OceanTides], like so :

	<syntaxhighlight lang="java">		<syntaxhighlight lang="java">
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	</syntaxhighlight>		</syntaxhighlight>

	The [{{~~PathCurrentJavaDoc~~}}/fr/cnes/sirius/patrius/forces/gravity/tides/TerrestrialTides.html TerrestrialTides] uses a [{{~~PathCurrentJavaDoc~~}}/fr/cnes/sirius/patrius/forces/gravity/tides/TerrestrialTidesDataProvider.html TerrestrialTidesDataProvider]. When the user has created an instance of the [{{~~PathCurrentJavaDoc~~}}/fr/cnes/sirius/patrius/forces/gravity/tides/TerrestrialTidesDataProvider.html TerrestrialTidesDataProvider] class, he can pass it on to the constructor of [{{~~PathCurrentJavaDoc~~}}/fr/cnes/sirius/patrius/forces/gravity/tides/OceanTides.html OceanTides], like so :		The [{{JavaDoc4.0}}/fr/cnes/sirius/patrius/forces/gravity/tides/TerrestrialTides.html TerrestrialTides] uses a [{{JavaDoc4.0}}/fr/cnes/sirius/patrius/forces/gravity/tides/TerrestrialTidesDataProvider.html TerrestrialTidesDataProvider]. When the user has created an instance of the [{{JavaDoc4.0}}/fr/cnes/sirius/patrius/forces/gravity/tides/TerrestrialTidesDataProvider.html TerrestrialTidesDataProvider] class, he can pass it on to the constructor of [{{JavaDoc4.0}}/fr/cnes/sirius/patrius/forces/gravity/tides/OceanTides.html OceanTides], like so :
	<syntaxhighlight lang="java">		<syntaxhighlight lang="java">
	final List<CelestialBody> bodies = new ArrayList<CelestialBody>();		final List<CelestialBody> bodies = new ArrayList<CelestialBody>();
Ligne 217 :		Ligne 217 :

	=== Drag force ===		=== Drag force ===
	Before implementing the drag force, one has to define a vehicle with aerodynamic properties. To do so, it is advised to consult the page about [SPC_FORCES_Home assembly models for force models]. Given an assembly with the right aerodynamic properties, the user can create an instance of [{{~~PathCurrentJavaDoc~~}}/fr/cnes/sirius/patrius/assembly/models/AeroModel.html AeroModel] or [{{~~PathCurrentJavaDoc~~}}/fr/cnes/sirius/patrius/assembly/models/DragLiftModel.html DragLiftModel], and use it to create an instance of DragForce.		Before implementing the drag force, one has to define a vehicle with aerodynamic properties. To do so, it is advised to consult the page about [SPC_FORCES_Home assembly models for force models]. Given an assembly with the right aerodynamic properties, the user can create an instance of [{{JavaDoc4.0}}/fr/cnes/sirius/patrius/assembly/models/AeroModel.html AeroModel] or [{{JavaDoc4.0}}/fr/cnes/sirius/patrius/assembly/models/DragLiftModel.html DragLiftModel], and use it to create an instance of DragForce.

	The implementation of the DragForce class allows at construction to take in account a multiplicative coefficient on the drag acceleration.		The implementation of the DragForce class allows at construction to take in account a multiplicative coefficient on the drag acceleration.

Admin : /* Contents */

2018-02-21T10:26:59Z

Contents

Voir les modifications

Admin : /* Javadoc */

2018-02-21T09:58:04Z

Javadoc

← Version précédente		Version du 21 février 2018 à 09:58
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	=== Javadoc ===		=== Javadoc ===

	\|=~~(% colspan~~="3" %)Library~~\|=(% colspan~~="6" %)Javadoc		{\| class="wikitable"
	\|~~(% colspan="3" %)~~Patrius\|~~(% colspan="6" %)~~[{{~~PathCurrentJavaDoc~~}}/fr/cnes/sirius/patrius/forces/package-summary.html Package fr.cnes.sirius.patrius.forces]		\|-
	\|~~(% colspan="3" %)~~Patrius\|~~(% colspan="6" %)~~[{{~~PathCurrentJavaDoc~~}}/fr/cnes/sirius/patrius/forces/drag/package-summary.html Package fr.cnes.sirius.patrius.forces.drag]		! scope="col"\| Library
	\|~~(% colspan="3" %)~~Patrius\|~~(% colspan="6" %)~~[{{~~PathCurrentJavaDoc~~}}/fr/cnes/sirius/patrius/forces/gravity/package-summary.html Package fr.cnes.sirius.patrius.forces.gravity]		! scope="col"\| Javadoc
	\|~~(% colspan="3" %)~~Patrius\|~~(% colspan="6" %)~~[{{~~PathCurrentJavaDoc~~}}/fr/cnes/sirius/patrius/forces/gravity/potential/package-summary.html Package fr.cnes.sirius.patrius.forces.gravity.potential]		\|-
	\|~~(% colspan="3" %)~~Patrius\|~~(% colspan="6" %)~~[{{~~PathCurrentJavaDoc~~}}/fr/cnes/sirius/patrius/forces/gravity/variations/package-summary.html Package fr.cnes.sirius.patrius.forces.gravity.variations]		\|Patrius
	\|~~(% colspan="3" %)~~Patrius\|~~(% colspan="6" %)~~[{{~~PathCurrentJavaDoc~~}}/fr/cnes/sirius/patrius/forces/gravity/variations/coefficients/package-summary.html Package fr.cnes.sirius.patrius.forces.gravity.variations.coefficients]		\|[{{JavaDoc4.0}}/fr/cnes/sirius/patrius/forces/package-summary.html Package fr.cnes.sirius.patrius.forces]
	\|~~(% colspan="3" %)~~Patrius\|~~(% colspan="6" %)~~[{{~~PathCurrentJavaDoc~~}}/fr/cnes/sirius/patrius/forces/gravity/tides/package-summary.html Package fr.cnes.sirius.patrius.forces.gravity.tides]		\|-
	\|~~(% colspan="3" %)~~Patrius\|~~(% colspan="6" %)~~[{{~~PathCurrentJavaDoc~~}}/fr/cnes/sirius/patrius/forces/radiation/package-summary.html Package fr.cnes.sirius.patrius.forces.radiation]		\|Patrius
	\|~~(% colspan="3" %)~~Patrius\|~~(% colspan="6" %)~~[{{~~PathCurrentJavaDoc~~}}/fr/cnes/sirius/patrius/forces/radiation/package-summary.html Package fr.cnes.sirius.patrius.forces.radiation]		\|[{{JavaDoc4.0}}/fr/cnes/sirius/patrius/forces/drag/package-summary.html Package fr.cnes.sirius.patrius.forces.drag]
	\|~~(% colspan="3" %)~~Patrius\|~~(% colspan="6" %)~~[{{~~PathCurrentJavaDoc~~}}/fr/cnes/sirius/patrius/forces/package-summary.html Package fr.cnes.sirius.patrius.forces]		\|-
			\|Patrius
			\|[{{JavaDoc4.0}}/fr/cnes/sirius/patrius/forces/gravity/package-summary.html Package fr.cnes.sirius.patrius.forces.gravity]
			\|-
			\|Patrius
			\|[{{JavaDoc4.0}}/fr/cnes/sirius/patrius/forces/gravity/potential/package-summary.html Package fr.cnes.sirius.patrius.forces.gravity.potential]
			\|-
			\|Patrius
			\|[{{JavaDoc4.0}}/fr/cnes/sirius/patrius/forces/gravity/variations/package-summary.html Package fr.cnes.sirius.patrius.forces.gravity.variations]
			\|-
			\|Patrius
			\|[{{JavaDoc4.0}}/fr/cnes/sirius/patrius/forces/gravity/variations/coefficients/package-summary.html Package fr.cnes.sirius.patrius.forces.gravity.variations.coefficients]
			\|-
			\|Patrius
			\|[{{JavaDoc4.0}}/fr/cnes/sirius/patrius/forces/gravity/tides/package-summary.html Package fr.cnes.sirius.patrius.forces.gravity.tides]
			\|-
			\|Patrius
			\|[{{JavaDoc4.0}}/fr/cnes/sirius/patrius/forces/radiation/package-summary.html Package fr.cnes.sirius.patrius.forces.radiation]
			\|-
			\|Patrius
			\|[{{JavaDoc4.0}}/fr/cnes/sirius/patrius/forces/radiation/package-summary.html Package fr.cnes.sirius.patrius.forces.radiation]
			\|-
			\|Patrius
			\|[{{JavaDoc4.0}}/fr/cnes/sirius/patrius/forces/package-summary.html Package fr.cnes.sirius.patrius.forces]
			\|}

	=== Links ===		=== Links ===

User Manual 4.0 Force models - Historique des versions

Admin : /* Variable potential models */

Admin : /* Static potential models */

Admin : /* Static potential models */

Admin : /* Variable potential models */

Admin : /* Available force models */

Admin : /* Gravity potential */

Admin : /* Interfaces */

Admin le 21 février 2018 à 14:23

Admin : /* Contents */

Admin : /* Javadoc */

Admin : /* Variable potential models */

Admin : /* Static potential models */

Admin : /* Static potential models */

Admin : /* Variable potential models */

Admin : /* Available force models */

Admin : /* Gravity potential */

Admin : /* Interfaces */

Admin : /* Contents */

Admin : /* Javadoc */