THE USEFULNESS AND LIMITS OF CORONAGRAPHY IN THE PRESENCE OF PINNED SPECKLES

C. AIME; R. SOUMMER

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THE USEFULNESS AND LIMITS OF CORONAGRAPHY IN THE PRESENCE OF PINNED SPECKLES

机译：有钉状斑点时冠状动脉造影的用途和局限性

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In this Letter we study the utility and limitations of ground-based coronagraphy with adaptive optics (AO). In very high AO correction regimes, residual speckles are pinned on the diffraction rings of the Airy pattern. We show that this effect is due to small errors in the complex wave in the focal plane, amplified by the coherent part of the wave. The statistics of these speckles are fairly well described by a modified Rician distribution. The variance of the speckles, at high flux and at photon-counting levels, finds simple expressions. The total variance can be partitioned into two contributions: one that can be suppressed by a coronagraph and one that cannot. Different regimes can be identified. These results enable us to analyze when a coronagraph can defeat the noise variance, and they provide a criterion for the effectiveness of such instruments.

机译：在这封信中，我们研究了带有自适应光学系统（AO）的地面日冕仪的实用性和局限性。在非常高的AO校正方案中，残留斑点会固定在Airy图案的衍射环上。我们表明，这种影响是由于焦平面中的复波中的小误差所致，该误差被波的相干部分放大了。通过改进的Rician分布可以很好地描述这些斑点的统计信息。在高通量和光子计数水平下，斑点的方差可以找到简单的表达式。总方差可以分为两部分：一种可以被日冕仪抑制，另一种则不能。可以确定不同的制度。这些结果使我们能够分析日冕仪何时可以克服噪声方差，并为此类仪器的有效性提供了标准。

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《The Astrophysical journal》 |2004年第1pt2期|p.L85-L88|共4页
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C. AIME; R. SOUMMER;
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1. THE USEFULNESS AND LIMITS OF CORONAGRAPHY IN THE PRESENCE OF PINNED SPECKLES [J] . C. AIME, R. SOUMMER The Astrophysical journal . 2004,第1Pt2期

机译：存在钉状斑点时冠状动脉造影的用途和局限性
2. High resolution displacement detection with speckles : accuracy limits in linear displacement speckle metrology [J] . R. Filter, T. Scharf, H. P. Herzig JEOS:RP . 2010,第1期

机译：带有斑点的高分辨率位移检测：线性位移斑点计量学中的精度限制
3. ON THE PRESENCE OF PINNOTHERES PISUM (BRACHYURA, PINNOTHERIDAE) IN THE CANARY ISLANDS (NE ATLANTIC), ITS SOUTHERNMOST DISTRIBUTION LIMIT [J] . CRUSTACEANA . 2018,第Pta11期

机译：在加那利群岛（NE Atlantic）的Pinnothers Pisum（Brachyura，Pinnothotoridae）的存在，其最南端的分配限制
4. Demonstration of a Speckle Nulling Algorithm and Kalman Filter Estimator with a Fiber Injection Unit for Observing Exoplanets with High-dispersion Coronagraphy [C] . Yeyuan Xin, Jorge Llop Sayson, Nikita Klimovich, SPIE Astronomical Telescopes + Instrumentation Conference . 2018

机译：演示带有光纤注入单元的斑点去噪算法和卡尔曼滤波器估计器，用于观测高色散日冕系外行星。
5. Fundamental Limits of Gaussian Communication Networks in the Presence of Intelligent Jammers [D] . Hosseinigoki, Fatemeh . 2019

机译：高斯通信网络在智能干扰器存在下的基本限制
6. Fluorescent microscopy beyond diffraction limits using speckle illumination and joint support recovery [O] . Junhong Min, Jaeduck Jang, Dongmin Keum, -1

机译：使用散斑照明和关节支架恢复荧光显微镜检查超过衍射极限
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THE USEFULNESS AND LIMITS OF CORONAGRAPHY IN THE PRESENCE OF PINNED SPECKLES

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