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Dear all,
We are pleased to announce you that the following papers have been
accepted for publication:
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LIFT: a focal-plane wavefront sensor for real-time low-order sensing on
faint sources
Serge Meimon , Thierry Fusco and Laurent M. Mugnier
Optics Letters, Vol. 35, Issue 18, pp. 3036-3038 (2010)
Abstract : We propose the linearized focal-plane technique (LIFT) and
compare it to classical sensors, such as the quad-cell wavefront sensor
(WFS), pyramid WFS, and Shack–Hartmann WFS. The number of modes sensed
by LIFT can be tuned without any hardware modification nor degradation
of low-order sensing performance. We derive an analytic model of the
noise propagation law, which we validate on end-to-end simulations.
Link: http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-35-18-3036
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Tip–tilt disturbance model identification for Kalman-based control
scheme: application to XAO and ELT systems
Serge Meimon, Cyril Petit , Thierry Fusco and Caroline Kulcsar
JOSA A, Vol. 27, Issue 11, pp. A122-A132 (2010)
Abstract : Adaptive optics (AO) systems have to correct tip–tilt (TT)
disturbances down to a fraction of the diffraction-limited spot. This
becomes a key issue for very or extremely large telescopes affected by
mechanical vibration peaks or wind shake effects. Linear quadratic
Gaussian (LQG) control achieves optimal TT correction when provided with
the temporal model of the disturbance. We propose a nonsupervised
identification procedure that does not require any auxiliary system or
loop opening and validate it on synthetic profile as well as on
experimental data.
Link: http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-27-11-A122
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Best regards,
Serge Meimon and the co-authors.
We are pleased to announce you that the following papers have been
accepted for publication:
----------------------------------------------------------------------------------------------
LIFT: a focal-plane wavefront sensor for real-time low-order sensing on
faint sources
Serge Meimon , Thierry Fusco and Laurent M. Mugnier
Optics Letters, Vol. 35, Issue 18, pp. 3036-3038 (2010)
Abstract : We propose the linearized focal-plane technique (LIFT) and
compare it to classical sensors, such as the quad-cell wavefront sensor
(WFS), pyramid WFS, and Shack–Hartmann WFS. The number of modes sensed
by LIFT can be tuned without any hardware modification nor degradation
of low-order sensing performance. We derive an analytic model of the
noise propagation law, which we validate on end-to-end simulations.
Link: http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-35-18-3036
----------------------------------------------------------------------------------------------
Tip–tilt disturbance model identification for Kalman-based control
scheme: application to XAO and ELT systems
Serge Meimon, Cyril Petit , Thierry Fusco and Caroline Kulcsar
JOSA A, Vol. 27, Issue 11, pp. A122-A132 (2010)
Abstract : Adaptive optics (AO) systems have to correct tip–tilt (TT)
disturbances down to a fraction of the diffraction-limited spot. This
becomes a key issue for very or extremely large telescopes affected by
mechanical vibration peaks or wind shake effects. Linear quadratic
Gaussian (LQG) control achieves optimal TT correction when provided with
the temporal model of the disturbance. We propose a nonsupervised
identification procedure that does not require any auxiliary system or
loop opening and validate it on synthetic profile as well as on
experimental data.
Link: http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-27-11-A122
----------------------------------------------------------------------------------------------
Best regards,
Serge Meimon and the co-authors.