User Manual 3.3 Attitude leg - Historique des versions

Admin : /* Attitude legs sequence */

2018-02-28T15:11:36Z

Attitude legs sequence

← Version précédente		Version du 28 février 2018 à 15:11
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	An attitude legs sequence is a container for several attitude legs, contiguous for their time intervals, in such a way that the attitude legs sequence can be processed like a single attitude leg by the propagator.		An attitude legs sequence is a container for several attitude legs, contiguous for their time intervals, in such a way that the attitude legs sequence can be processed like a single attitude leg by the propagator.

	The attitude legs sequence is the equivalent of the [~~ATT_ALW_Home~~#~~HAttitudessequence~~ Attitudes sequence], using attitude legs (<code>AttitudeLeg</code> instances) rather than attitude laws (<code>AttitudeLaw</code> instances).		The attitude legs sequence is the equivalent of the [[User Manual 3.3 Attitude law#Attitudes sequence\|Attitudes sequence]], using attitude legs (<code>AttitudeLeg</code> instances) rather than attitude laws (<code>AttitudeLaw</code> instances).
	The switching from one attitude leg to another is based on the time interval of validity of the two legs.		The switching from one attitude leg to another is based on the time interval of validity of the two legs.

Admin : /* Scope */

2018-02-28T15:10:16Z

Scope

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	The purpose of this chapter is to describe the current Patrius attitude legs.		The purpose of this chapter is to describe the current Patrius attitude legs.

	An attitude leg is a time-bounded attitude law. Generalities on attitude laws can be found [User Manual 3.3 Attitude law\|here].		An attitude leg is a time-bounded attitude law. Generalities on attitude laws can be found [[User Manual 3.3 Attitude law\|here]].

	=== Javadoc ===		=== Javadoc ===

Admin : /* Scope */

2018-02-28T15:09:56Z

Scope

← Version précédente		Version du 28 février 2018 à 15:09
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	The purpose of this chapter is to describe the current Patrius attitude legs.		The purpose of this chapter is to describe the current Patrius attitude legs.

	An attitude leg is a time-bounded attitude law. Generalities on attitude laws can be found [~~ATT_ALW_Home~~ here].		An attitude leg is a time-bounded attitude law. Generalities on attitude laws can be found [User Manual 3.3 Attitude law\|here].

	=== Javadoc ===		=== Javadoc ===

Admin : /* Package Overview */

2018-02-28T15:09:13Z

Package Overview

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	=== Package Overview ===		=== Package Overview ===
	The attitude leg <code>AttitudeLeg</code> interface inherits the <code>AttitudeProvider</code> interface.		The attitude leg <code>AttitudeLeg</code> interface inherits the <code>AttitudeProvider</code> interface.
	Its place in the global Attitude design can be found [~~ATT_ALW_PkgOverview~~ here].		Its place in the global Attitude design can be found [[User Manual 3.3 Attitude law#Package Overview\|here]].

	== Features Description ==		== Features Description ==

Admin le 26 février 2018 à 16:54

2018-02-26T16:54:16Z

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	\|[{{JavaDoc3.3}}/org/orekit/attitudes/RelativeTabulatedAttitudeLeg.html ...]		\|[{{JavaDoc3.3}}/org/orekit/attitudes/RelativeTabulatedAttitudeLeg.html ...]
	\|}		\|}

			[[Category:User_Manual_3.3_Attitude]]

Admin : /* Contents */

2018-02-26T16:03:54Z

Contents

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 == Contents ==
 === Interfaces ===
-|=(% colspan="3" %)Interface|=(% colspan="6" %)Summary|=(% colspan="1" %)Javadoc
+{| class="wikitable"
-|(% colspan="3" %)'''AttitudeLeg'''|(% colspan="6" %)This interface extends the AttitudeProvider interface and adds the time interval of validity notion to the attitude laws.|[{{JavaDoc3.3}}/org/orekit/attitudes/AttitudeLeg.html ...]
+|-
 === Classes ===
-|=(% colspan="3" %)Class|=(% colspan="6" %)Summary|=(% colspan="1" %)Javadoc
+{| class="wikitable"
-|(% colspan="3" %)'''AttitudeLawLeg'''|(% colspan="6" %)Object representing an attitude law for spacecraft attitude field purposes.|[{{JavaDoc3.3}}/org/orekit/attitudes/AttitudeLawLeg.html ...]
+|-
-|(% colspan="3" %)'''TabulatedAttitude'''|(% colspan="6" %)Object representing a tabulated attitude leg : the attitude at a date is interpolated from a list of known ones.|[{{JavaDoc3.3}}/org/orekit/attitudes/TabulatedAttitude.html ...]
+! scope="col"| Class
-|(% colspan="3" %)'''AttitudeLegsSequence'''|(% colspan="6" %)Object representing a sequence of contiguous attitude legs.|[{{JavaDoc3.3}}/org/orekit/attitudes/AttitudeLegsSequence.html ...]
+! scope="col"| Summary
-|(% colspan="3" %)'''RelativeTabulatedAttitudeLeg'''|(% colspan="6" %)This class implements a tabulated attitude leg with relative dates.|[{{JavaDoc3.3}}/org/orekit/attitudes/RelativeTabulatedAttitudeLeg.html ...]
+! scope="col"| Javadoc

Admin : /* Getting Started */

2018-02-26T16:00:38Z

Getting Started

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	final Attitude sAttitude = sequence.getAttitude(otherPvProvider, date, itrf);		final Attitude sAttitude = sequence.getAttitude(otherPvProvider, date, itrf);
	</syntaxhighlight>		</syntaxhighlight>


	== Contents ==		== Contents ==

Admin : /* Features Description */

2018-02-26T16:00:00Z

Features Description

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	The switching from one attitude leg to another is based on the time interval of validity of the two legs.		The switching from one attitude leg to another is based on the time interval of validity of the two legs.

	An attitude legs sequence is associated to a <code>PVCoordinatesProvider</code> instance, which will'''override any PVCoordinatesProvider''' passed as parameter to the methods like getAttitude(). The reason for such a behaviour, which violates the contract of the <code>AttitudeProvider</code> interface, is that :		An attitude legs sequence is associated to a <code>PVCoordinatesProvider</code> instance, which will '''override any PVCoordinatesProvider''' passed as parameter to the methods like getAttitude(). The reason for such a behaviour, which violates the contract of the <code>AttitudeProvider</code> interface, is that :

	* an attitude legs sequence needs to'''enforce coherence''' between its inner attitude legs and its homing maneuvers.		* an attitude legs sequence needs to '''enforce coherence''' between its inner attitude legs and its homing maneuvers.

	* homing maneuvers are created and computed once by using a specific <code>PVCoordinatesProvider</code>, in order to preserve good performances.		* homing maneuvers are created and computed once by using a specific <code>PVCoordinatesProvider</code>, in order to preserve good performances.
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	<code>TabulatedAttitude</code> is an implementation of <code>AttitudeLeg</code>. It represents a tabulated attitude leg.		<code>TabulatedAttitude</code> is an implementation of <code>AttitudeLeg</code>. It represents a tabulated attitude leg.

	In order to interpolate the attitude at a date, the user must specify a list of'''ordered''' attitudes, and can specify a number of points used by Hermite interpolation.		In order to interpolate the attitude at a date, the user must specify a list of '''ordered''' attitudes, and can specify a number of points used by Hermite interpolation.
	If not specified, the number of points used by Hermite interpolation is set to a default number (currently 2).		If not specified, the number of points used by Hermite interpolation is set to a default number (currently 2).

	<syntaxhighlight lang="java">		<syntaxhighlight lang="java">
	final List<Attitude> attList = new ArrayList<Attitude>();		final List<Attitude> attList = new ArrayList<Attitude>();
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	new RelativeTabulatedAttitudeLeg(refDate, frame, listAr);		new RelativeTabulatedAttitudeLeg(refDate, frame, listAr);
	</syntaxhighlight>		</syntaxhighlight>


	== Getting Started ==		== Getting Started ==

Admin : /* Introduction */

2018-02-26T15:57:49Z

Introduction

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	=== Javadoc ===		=== Javadoc ===
	\|=~~(% colspan~~="3" %)Library~~\|=(% colspan~~="6" %)Javadoc		{\| class="wikitable"
	\|~~(% colspan="3" %)~~Orekit\|~~(% colspan="6" %)~~[{{JavaDoc3.3}}/org/orekit/attitudes/package-summary.html Package org.orekit.attitudes]		\|-
	\|~~(% colspan="3" %)~~Orekit addons\|~~(% colspan="6" %)~~[{{JavaDoc3.3}}/org/orekit/attitudes/package-summary.html Package org.orekit.attitudes]		! scope="col"\| Library
			! scope="col"\| Javadoc
			\|-
			\|Orekit
			\|[{{JavaDoc3.3}}/org/orekit/attitudes/package-summary.html Package org.orekit.attitudes]
			\|-
			\|Orekit addons
			\|[{{JavaDoc3.3}}/org/orekit/attitudes/package-summary.html Package org.orekit.attitudes]
			\|}

	=== Links ===		=== Links ===
	''Orekit Attitudes architecture description'', ~~{{siteLink label="Orekit site" jd="OR" suffix="~~architecture/attitudes.html~~"/}}~~.		''Orekit Attitudes architecture description'', [https://www.orekit.org/static/architecture/attitudes.html Orekit site].

	=== Useful Documents ===		=== Useful Documents ===

Admin : Admin a déplacé la page Attitude leg vers User Manual 3.3 Attitude leg sans laisser de redirection

2018-02-26T15:53:39Z

Admin a déplacé la page Attitude leg vers User Manual 3.3 Attitude leg sans laisser de redirection

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User Manual 3.3 Attitude leg - Historique des versions

Admin : /* Attitude legs sequence */

Admin : /* Scope */

Admin : /* Scope */

Admin : /* Package Overview */

Admin le 26 février 2018 à 16:54

Admin : /* Contents */

Admin : /* Getting Started */

Admin : /* Features Description */

Admin : /* Introduction */

Admin : Admin a déplacé la page Attitude leg vers User Manual 3.3 Attitude leg sans laisser de redirection

Admin : /* Attitude legs sequence */

Admin : /* Scope */

Admin : /* Scope */

Admin : /* Package Overview */

Admin : /* Contents */

Admin : /* Getting Started */

Admin : /* Features Description */

Admin : /* Introduction */

Admin : Admin a déplacé la page Attitude leg vers User Manual 3.3 Attitude leg sans laisser de redirection