Mario Virdis
A Meteoroid Impact Recovery Control System for the LISA Gravitational Wave Observatory.
Rel. Carlo Novara. Politecnico di Torino, Corso di laurea magistrale in Ingegneria Informatica (Computer Engineering), 2021
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Abstract
LISA is a space-based gravitational wave detector, confirmed by ESA to be the third large class mission of the Cosmic Vision program. This kind of detection requires extremely high accuracy from laser--based sensor measurements; therefore impacts with meteoroids constitute a real threat to the mission, causing a waste of time and resources. In this work, this problem is addressed by comparing different possible recovery control systems. The recovery control system is composed by a set of controllers, each of which solves a specific recovery task. These tasks are the outcome of a preliminary data analysis of the impact data provided by ESA.
In this data analysis a Spacecraft of the LISA system is modeled as a state machine and each impact-induced state transition is considered
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