Recovery strategies to cope with micrometeoroid impacts in the LISA mission

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Recovery strategies to cope with micrometeoroid impacts in the LISA mission

Novara, Carlo / Virdis, Mario / Pagone, Michele / Ruggiero, Dario / Capello, Elisa / Punta, Elisabetta / Dionisio, Sabrina / Vidano, Simone / Grzymisch, Jonathan / Preda, Valentin

Abstract

Abstract We propose an analysis of the recovery strategies for the science mode of the Laser Interfer-ometer Space Antenna (LISA) mission after a meteoroid impacts the spacecraft. The mission consists of a three-spacecraft constellation traveling in a heliocentric orbit, detecting gravitational waves through laser interferometry. To this end, each spacecraft must travel in a free-fall condition in order to reject any possible disturbance and noise affecting the control loop. Nevertheless, if one of the three satellites crosses a meteoroids stream, the collisions can produce attitude perturbations that must be compensated by the control loop. Indeed, in this latter case, the interferometer laser links can be lost. Unfortunately, the link recovery is accomplished through a quite time-consuming re-acquisition maneuver, implying a significant reduction of the science mode time. For this reason, we propose different strategies for a fast recovery of the nominal attitude. The strategies are supported and traded-off by means of extensive simulations, including a Monte Carlo campaign and a worst-case analysis.

Highlights • Different GNC recovery strategies for LISA mission are identified and compared. • An attitude guidance and control system is designed for handling the attitude perturbation due to micrometeoroid impacts. • Different navigation filters, based on sensors measurements, are designed and compared. • Monte Carlo and worst-case simulations are presented to verify the effectiveness of the proposed GNC strategies.

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Document information

Title :

Recovery strategies to cope with micrometeoroid impacts in the LISA mission

Contributors:

Novara, Carlo (author) / Virdis, Mario (author) / Pagone, Michele (author) / Ruggiero, Dario (author) / Capello, Elisa (author) / Punta, Elisabetta (author) / Dionisio, Sabrina (author) / Vidano, Simone (author) / Grzymisch, Jonathan (author) / Preda, Valentin (author)

Published in:

Acta Astronautica ; 211 ; 844-864

Publication date :

2023-06-17

Size :

21 pages

ISSN :

0094-5765

DOI :

https://doi.org/10.1016/j.actaastro.2023.06.031

Type of media :

Article (Journal)