6–7 de mayo de 2024
Edificio Histórico de la Universidad de Oviedo
Europe/Madrid zona horaria

Noise-free wavefront prediction for open-loop AO system based on recurrent models

7 may 2024, 13:40
15m
Aula Magna (Edificio Histórico de la Universidad de Oviedo)

Aula Magna

Edificio Histórico de la Universidad de Oviedo

Investigador MOMA Sesión ICTEA

Ponente

Saúl Pérez (Instituto Universitario de Ciencias y Tecnologías Espaciales de Asturias (ICTEA))

Descripción

Ground based telescopes encounter a significant challenge in the form of
atmospheric turbulence, which results in the acquired images appearing distorted
and lacking sharpness. To address this issue, adaptive optics is employed, a
technology that effectively mitigates wavefront aberrations by adjusting the shape
of a deformable mirror's surface. Furthermore, the integration of neural networks
into the control system has showcased notable enhancements, both in
atmospheric correction and turbulence prediction. Specifically, in this work 2DLSTM network structure is employed, which has shown good efficiency in slope
prediction over a time sequence. Aiming to address the prediction of turbulence
data without the noise introduced by reading instruments. Through the
experiments carried out in this research, it is shown that such neural models are
able to learn to a certain extent the noise patterns of the system. This way, the
obtained data can closely resemble real-world turbulence conditions.

Autor primario

Saúl Pérez (Instituto Universitario de Ciencias y Tecnologías Espaciales de Asturias (ICTEA))

Materiales de la presentación