User Manual 4.18 Events: orbital - Historique des versions

Admin tsn le 10 juin 2026 à 10:59

2026-06-10T10:59:55Z

Admin tsn le 10 juin 2026 à 10:28

2026-06-10T10:28:19Z

← Version précédente		Version du 10 juin 2026 à 10:28
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	\| This class handles escape velocity crossing detection.		\| This class handles escape velocity crossing detection.
	\|[{{JavaDoc4.18}}/fr/cnes/sirius/patrius/events/detectors/SafetyMarginDetector.html SafetyMarginDetector]\|-		\|[{{JavaDoc4.18}}/fr/cnes/sirius/patrius/events/detectors/SafetyMarginDetector.html SafetyMarginDetector]\|-
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	\|AOLDetector		\|AOLDetector
	\| This class handles events representing the reaching of an argument of latitude value.		\| This class handles events representing the reaching of an argument of latitude value.

Admin tsn le 10 juin 2026 à 10:26

2026-06-10T10:26:54Z

← Version précédente		Version du 10 juin 2026 à 10:26
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	* The satellite is in front of the occulted body (angle occulted body- occulting body - satellite <= Pi/2): apparent radius of occulting body cannot be computed. Hence it is considered to be equal to Pi/2 (slight approximation since it means satellite is considered to be lying exactly on the surface of the occulting body). Then usual computation of g function applies.		* The satellite is in front of the occulted body (angle occulted body- occulting body - satellite <= Pi/2): apparent radius of occulting body cannot be computed. Hence it is considered to be equal to Pi/2 (slight approximation since it means satellite is considered to be lying exactly on the surface of the occulting body). Then usual computation of g function applies.

	==== BodyInEclipseDetector====		==== BodyInEclipseDetector ====

	This detector is in charge of the umbra/penumbra eclipse events detection for a non-point target body. 3 bodies are considered to compute the BodyInEclipse events:		This detector is in charge of the umbra/penumbra eclipse events detection for a non-point target body. 3 bodies are considered to compute the BodyInEclipse events:
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	This solution, also avoids problem about detecting a longitude at PI rad further (that we meet with a sin(a- b) g function).		This solution, also avoids problem about detecting a longitude at PI rad further (that we meet with a sin(a- b) g function).

			==== Safety Margin Detector ====

			This detector computes the safety margin ∆ with respect to the escape velocity. Users have the choice between two methods for the safety margin computation:
			* INSTANTANEOUS: The safety margin is computed using the spacecraft's current velocity v and the escape velocity v_esc evaluated at the satellite's current position (v_esc=√(2μ/r)): ∆ = v/v_esc-1
			* PERICENTRE: The safety margin is computed at the orbit's pericenter (where the satellite speed is maximum) using the orbital eccentricity e: ∆ = √((1+e)/2)-1

			Note: For circular orbits (e=0 and v=√(μ/r)), both methods are equivalent and yield ∆ = 1/√2-1.

			The g switching function is the difference between the computed safety margin ∆ and a user-defined safety margin threshold t (safetyMarginIn): g = ∆-t

	====AOLDetector====		====AOLDetector====
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	\|[{{JavaDoc4.18}}/fr/cnes/sirius/patrius/events/detectors/AnomalyDetector.html AnomalyDetector]		\|[{{JavaDoc4.18}}/fr/cnes/sirius/patrius/events/detectors/AnomalyDetector.html AnomalyDetector]
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			\|SafetyMarginDetector
			\| This class handles escape velocity crossing detection.
			\|[{{JavaDoc4.18}}/fr/cnes/sirius/patrius/events/detectors/SafetyMarginDetector.html SafetyMarginDetector]\|-
	\|AOLDetector		\|AOLDetector
	\| This class handles events representing the reaching of an argument of latitude value.		\| This class handles events representing the reaching of an argument of latitude value.

Admin tsn : Page créée avec « == Introduction == === Scope === Here are presented all the events detectors of the theme "orbital". === Javadoc === Those event detectors are available in the packages : {| class="wikitable" |- ! scope="col"| Library ! scope="col"| Javadoc |- |Patrius |[{{JavaDoc4.18}}/fr/cnes/sirius/patrius/events/detecors/package-summary.html Package fr.cnes.sirius.patrius.events.detectors] |} === Links === None as of now. === Useful Documents === None as of now. === Pac... »

2026-06-10T08:45:05Z

Page créée avec « == Introduction == === Scope === Here are presented all the events detectors of the theme "orbital". === Javadoc === Those event detectors are available in the packages : {| class="wikitable" |- ! scope="col"| Library ! scope="col"| Javadoc |- |Patrius |[{{JavaDoc4.18}}/fr/cnes/sirius/patrius/events/detecors/package-summary.html Package fr.cnes.sirius.patrius.events.detectors] |} === Links === None as of now. === Useful Documents === None as of now. === Pac... »

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