| 实际大气湍流下弱光信标Shack-Hartmann波前传感器的波前斜率探测误差 |
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| 引用本文： | 沈锋,姜文汉. 实际大气湍流下弱光信标Shack-Hartmann波前传感器的波前斜率探测误差[J]. 强激光与粒子束, 2001, 13(5): 549-554 |
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| 作者姓名： | 沈锋 姜文汉 |
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| 作者单位： | 中国科学院 光电技术研究所， 四川 成都 610209 |
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| 摘 要： | 深入分析了Shack-Hartmann 波前传感器（S-H WFS）在实际大气湍流条件下弱光信标波前斜率的探测误差，导出了定量分析的数学模型。分析结果表明，当S-H WFS用于弱光信标（光子受限）湍流波前斜率的探测时，除了信标光起伏和探测器噪声外，大气强度闪烁、天空背景光等因素会增加探测误差，并且随着探测信标与天空背景光的对比度的下降，质心探测误差会随着孔径到达角起伏的增加而增加。
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| 关 键 词： | 自适应光学 波前传感器 探测误差 大气闪烁 |
| 文章编号： | 1001-4322(2001)05-0549-04 |
| 收稿时间： | 2001-02-01 |
| 修稿时间： | 2001-02-01 |
Slope measurement error of Shack-Hartmann wavefront sensor under realistic atmospheric trubulence with low-level-light beacon |
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| SHEN Feng,JINAG Wen-han. Slope measurement error of Shack-Hartmann wavefront sensor under realistic atmospheric trubulence with low-level-light beacon[J]. High Power Laser and Particle Beams, 2001, 13(5): 549-554 |
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| Authors: | SHEN Feng JINAG Wen-han |
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| Affiliation: | Institute of optics and electronics, Chinese Academy of Science s, P.O.Box 350, Chengdu Shuangliu 610209, China |
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| Abstract: | In this paper,a mathematical model for quantitatively analyzing Shack-Hartmann wavefront sensor(S-HWFS)'s detecting error under realistic atmospheric turbulence is presented,and the transfer characteristics of a variety of detecting error are researched.Results show that the S-H WFS's detecting errors will increase due to the atmospheric scintillation,sky background radiation and so on when Shack-Hartmann wavefront sensor is used in probing very low light level beacon,and along with the decreas of the contrast between the beacon and the sky background,the centroid detecting error goes up while the aperture input fluctuates more strongly. |
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| Keywords: | adaptive optics wavefront sensor detecting error atmospheric scintillation |
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