Research

Talks

• EM Algorithms for Interferometric Imaging with Subarray Switching (Algorithmes EM pour l’imagerie interférométrique avec commutations de sous-réseaux d’antennes), Research Topic Day “State of the Art of Inversion Methods in Astronomy and Upcoming Challenges” (“État des lieux des méthodes d’inversion en astronomie et challenges à venir”) organized by GdR-IASIS at Paris-Saclay University, June 20, 2024 (slides)

Participated Conferences

• “Antenna Sub-Array Switching Strategy for Low-Cost & High-Resolution Radio-Astronomical Imaging” (slides)
  • Presented at: IEEE International Conference on Signal Processing, Communications and Computing (ICSPCC), 2023
  • Location: Zhengzhou, China
• “Barankin Bound vs Cramér-Rao Bound for Interferometric-Like Array Design at Low SNR” (slides)
  • Presented at: 31st European Signal Processing Conference (EUSIPCO), 2023
  • Location: Helsinki, Finland
• “Borne Barankin vs Borne Cramér-Rao pour la Géométrie de Réseaux d’Antennes en Radioastronomie” (slides)
  • Presented at: Group Recherche Traitement Signal Images (GRETSI), 2023
  • Location: Grenoble, France

Reviewing Activities

• IEEE Transactions on Fuzzy Systems
• Aerospace Science and Technology
• IET Control Theory & Applications

Participated Project

AAPG2024: Performance and Design of Radio Interferometers with large eXtent (PerDRIX)

Lucien BACHARACH, Pascal LARZABAL, Isabelle VIN, Jianhua WANG, Gilles CHARDON, Julien GIRARD

From July 2024 (48 months)

Objectives:

• Derive natural and meaningful estimation accuracy measures for the imaging task in radio astronomy.
• Propose useful optimization criteria and algorithms for the array configuration of radio interferometers, based on the aforementioned imaging accuracy measures.
• Apply the proposed tools to practical radio interferometer use cases: optimization of a whole radio interferometer array configuration, but also design of observations and optimal observation resource allocation (e.g. optimal sub-arraying) on existing facilities.