Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Error analysis of moment-based modal wavefront sensing   The shape of a focus-modulated point spread function (PSF) is used as a quick
visual assessment tool of aberration modes in the PSF. Further analysis in
terms of shape moments can permit quantifying the modal coefficients with an
accuracy comparable to that of typical wavefront sensors. In this letter, the
error of the moment-based wavefront sensing is analytically described in terms
of the pixelation and photon/readout noise. All components highly depend on the
(unknown) PSF shape, but can be estimated from the measured PSF sampled at a
reasonable spatial resolution and photon count. Numerical simulations verified
that the models consistently predicted the behavior of the modal estimation
error of the moment-based wavefront sensing.

22
The categories of this paper are: chao-dyn
15
The categories of this paper are: nucl-ex
34
The categories of this paper are: chem-ph
35
The categories of this paper are: mtrl-th
27
The categories of this paper are: comp-gas
2
The categories of this paper are: math
1
The categories of this paper are: cs
14
The categories of this paper are: math-ph
29
The categories of this paper are: funct-an
18
The categories of this paper are: econ
0
The categories of this paper are: hep-ph
17
The categories of this paper are: q-fin
36
The categories of this paper are: cmp-lg
9
The categories of this paper are: nlin
31
The categories of this paper are: ao-sci
19
The categories of this paper are: eess