Effects of noise and detection error in a dynamic adaptive optics system

She Chen; Hai-Xing Yan; Shu-Shan Li

doi:10.1117/12.481677

5 September 2002 Effects of noise and detection error in a dynamic adaptive optics system

She Chen, Hai-Xing Yan, Shu-Shan Li

Proceedings Volume 4926, Adaptive Optics and Applications II; (2002) https://doi.org/10.1117/12.481677
Event: Photonics Asia, 2002, Shanghai, China

Abstract

It is well known that noise and detection error can affect the performances of an adaptive optics (AO) system. Effects of noise and detection error on the phase compensation effectiveness in a dynamic AO system are investigated by means of a pure numerical simulation in this paper. A theoretical model for numerically simulating effects of noise and detection error in a static AO system and a corresponding computer program were presented in a previous article. A numerical simulation of effects of noise and detection error is combined with our previous numeral simulation of a dynamic AO system in this paper and a corresponding computer program has been compiled. Effects of detection error, readout noise and photon noise are included and investigated by a numerical simulation for finding the preferred working conditions and the best performances in a practical dynamic AO system. An approximate model is presented as well. Under many practical conditions such approximate model is a good alternative to the more accurate one. A simple algorithm which can be used for reducing the effect ofnoise is presented as well. When signal to noise ratio is very low, such method can be used to improve the performances of a dynamic AO system.

Citation Download Citation

She Chen, Hai-Xing Yan, and Shu-Shan Li "Effects of noise and detection error in a dynamic adaptive optics system", Proc. SPIE 4926, Adaptive Optics and Applications II, (5 September 2002); https://doi.org/10.1117/12.481677

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