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 。
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.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2001年第5期549-554,共6页
High Power Laser and Particle Beams
基金
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