Performance of centroiding algorithms at low light level conditions in adaptive optics

Vyas, A; Roopashree, M. B; Prasad, B. R

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dc.contributor.author	Vyas, A
dc.contributor.author	Roopashree, M. B
dc.contributor.author	Prasad, B. R
dc.date.accessioned	2009-11-18T14:45:52Z
dc.date.available	2009-11-18T14:45:52Z
dc.date.issued	2009
dc.identifier.citation	Proceedings of the 2009 International Conference on Advances in Recent Technologies in Communication and Computing,Kottayam, India , 27-28 October 2009, pp. 366 – 369.	en
dc.identifier.isbn	978-0-7695-3845-7
dc.identifier.uri	http://hdl.handle.net/2248/4912
dc.description	Restricted Access
dc.description.abstract	The performance metrics of different centroiding algorithms at low light level conditions were optimized in the case of a Shack Hartmann Sensor (SHS) for efficient performance of the adaptive optics system. For short exposures and low photon flux, the Hartmann spot does not have a Gaussian shape due to the photon noise which follows poissonian statistics. The centroiding estimation error was calculated at different photon levels in the case of changing spot size and shift in the spot using Monte Carlo simulations. This analysis also proves to be helpful in optimizing the SHS specifications at low light levels.	en
dc.language.iso	en	en
dc.publisher	The Institute of Electrical and Electronics Engineers, Inc	en
dc.relation.uri	http://dx.doi.org/10.1109/ARTCom.2009.30	en
dc.rights	© The Institute of Electrical and Electronics Engineers, Inc.	en
dc.subject	Poisson Noise	en
dc.subject	Adaptive Optics	en
dc.subject	Shack Hartmann Sensor	en
dc.subject	Centroiding Algorithms	en
dc.title	Performance of centroiding algorithms at low light level conditions in adaptive optics	en
dc.type	Article	en