Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Search research articles

Related Experiment Videos

Order-N sparse minimum-variance open-loop reconstructor for extreme adaptive optics.

¹Department of Electrical and Computer Engineering, Michigan Technological University, Houghton, Michigan 49931-1295, USA. lgilles@mtu.edu

|November 1, 2003

Summary

A new sparse minimum-variance reconstructor for extreme adaptive optics (ExAO) systems offers efficient wave-front reconstruction. This scalable method achieves high accuracy with minimal computational cost, improving astronomical observations.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Perioperative factor XIII and viscoelastic measurements of open compared to minimal invasive major upper gastrointestinal surgery- A prospective observational study.

Thrombosis research·2026

Same author

PFAS levels and exposure determinants in sensitive population groups.

Chemosphere·2022

Same author

PFAS levels and determinants of variability in exposure in European teenagers - Results from the HBM4EU aligned studies (2014-2021).

International journal of hygiene and environmental health·2022

Same author

Identification and characterization of a new soybean promoter induced by Phakopsora pachyrhizi, the causal agent of Asian soybean rust.

BMC biotechnology·2021

Same author

Impact of Simeprevir Versus Telaprevir Triple Therapy for Chronic Hcv Infection on Patient-Reported Outcomes in Prior Non-Responders to Peginterferon/Ribavirin Results from the Phase Iii Attain Study.

Value in health : the journal of the International Society for Pharmacoeconomics and Outcomes Research·2016

Same author

Simeprevir added to peginterferon and ribavirin lessens time with fatigue, depressive symptoms and functional limitations in patients with chronic hepatitis C compared with peginterferon and ribavirin: results from 1161 patients in the QUEST-1, QUEST-2 and PROMISE studies.

Journal of viral hepatitis·2014

Area of Science:

Astronomy
Optical Engineering
Computational Science

Background:

Extreme adaptive optics (ExAO) systems require precise wave-front reconstruction for advanced astronomical imaging.
Existing methods may face scalability or computational challenges in real-time ExAO applications.

Purpose of the Study:

To develop and evaluate a scalable sparse minimum-variance open-loop wave-front reconstructor for ExAO systems.
To improve the efficiency and robustness of wave-front reconstruction algorithms.

Main Methods:

Utilized Ellerbroek's sparse approximation of the wave-front inverse covariance matrix.
Implemented an iterative conjugate gradient (CG) algorithm accelerated by a multigrid (MG) method (MGCG).
Analyzed computational cost and reconstruction accuracy compared to existing methods.

Related Experiment Videos

Main Results:

The MGCG scheme demonstrated order N complexity and rapid convergence (two CG iterations).
Achieved Strehl ratio (SR) and root-mean-square reconstruction error comparable to previous methods.
Identified Cholesky factorization as competitive for systems up to 10^4 degrees of freedom.

Conclusions:

The proposed sparse MGCG reconstructor is a scalable and efficient solution for ExAO wave-front reconstruction.
The method provides high accuracy and robustness, suitable for demanding astronomical applications.
Algorithm choice depends on system scale and real-time processing requirements.