Piston sensing via a dispersed fringe sensor with a merit-function-based active scanning algorithm at low light levels

被引：0

作者：

张永峰 ^{[1
,2
,3
]}

鲜浩 ^{[1
,2
]}

机构：

[1] Key Laboratory on Adaptive Optics, Chinese Academy of Sciences

[2] Institute of Optics and Electronics, Chinese Academy of Sciences

[3] University of Chinese Academy of Sciences

来源：

ChineseOpticsLetters | 2019年 / 17卷 / 12期

基金：

中国国家自然科学基金;

关键词：

image; DFS; Piston sensing via a dispersed fringe sensor with a merit-function-based active scanning algorithm at low light levels;

D O I：

暂无

中图分类号：

TP212 [发送器（变换器）、传感器];

学科分类号：

080202 ;

摘要：

Dispersed fringe sensors are a promising approach for sensing the large-scale physical step between adjacent segments with acceptable accuracy. However, the nature of dispersion in a dispersed fringe sensor leads to the ideal dispersed fringe pattern becoming vulnerable to noise, particularly at low light levels. A reliable merit-functionbased algorithm with an active actuation is introduced here. The feasibility of our algorithm is numerically demonstrated, and Monte Carlo experiments for different signal-to-noise ratios are conducted to assess its robustness. The results show that the method is valid even when the signal-to-noise ratio is as low as 1.

引用

页码：31 / 35

页数：5