Search Results - "Rao, Changhui"

Accuracy Analysis for Shack–Hartmann Wave Front Sensing with Extended Sources by Wei, Xiya, Rao, Changhui

“…Abstract Correlating the Shack–Hartmann wave front sensor (SH-WFS) with extended targets is widely used in solar adaptive optics systems. This paper aims to…”
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Sub-Millisecond Phase Retrieval for Phase-Diversity Wavefront Sensor by Wu, Yu, Guo, Youming, Bao, Hua, Rao, Changhui

“…We propose a convolutional neural network (CNN) based method, namely phase diversity convolutional neural network (PD-CNN) for the speed acceleration of…”
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Hybrid Detection Algorithm and Study on the Quantity and Brightness Evolution Characteristics of Photospheric Bright Point Groups by Bai, Haicheng, Yang, Peng, Zhao, Limin, Gong, Xiaoying, Zhong, Libo, Yang, Yang, Rao, Changhui

“…Abstract Photospheric bright points (BPs), the smallest magnetic elements in the photosphere, are constantly moving and changing. Studying the characteristics…”
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Adaptive optics based on machine learning: a review by Guo, Youming, Zhong, Libo, Min, Lei, Wang, Jiaying, Wu, Yu, Chen, Kele, Wei, Kai, Rao, Changhui

“…Adaptive optics techniques have been developed over the past half century and routinely used in large ground-based telescopes for more than 30 years. Although…”
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Light Bridges and Solar Active Region Evolution Processes by Li, Fuyu, Rao, Changhui, Zhao, Xinhua, Guo, Yang, Gong, Xiaoying, Chen, Yuhao, Xiang, Nanbin, Wang, Huaning

“…Abstract The formation mechanism of light bridges (LBs) is strongly related to the dynamic evolution of solar active regions (ARs). To study the relationship…”
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Large Eruptive and Confined Flares in Relation to the Solar Active Region Evolution by Li, Fuyu, Rao, Changhui, Wang, Huaning, Zhao, Xinhua, Xiang, Nanbin, Deng, Linhua, Li, Haitang, Liu, Yu

“…Abstract Solar active regions (ARs) provide the required magnetic energy and the topology configuration for flares. Apart from conventional static magnetic…”
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No-Reference Quality Assessment of Extended Target Adaptive Optics Images Using Deep Neural Network by Gao, Guoqing, Li, Lingxiao, Chen, Hao, Jiang, Ning, Li, Shuqi, Bian, Qing, Bao, Hua, Rao, Changhui

“…This paper proposes a supervised deep neural network model for accomplishing highly efficient image quality assessment (IQA) for adaptive optics (AO) images…”
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ISHS-Net: Single-View 3D Reconstruction by Fusing Features of Image and Shape Hierarchical Structures by Gao, Guoqing, Yang, Liang, Zhang, Quan, Wang, Chongmin, Bao, Hua, Rao, Changhui

“…The reconstruction of 3D shapes from a single view has been a longstanding challenge. Previous methods have primarily focused on learning either geometric…”
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The Deformation of an Erupting Magnetic Flux Rope in a Confined Solar Flare by Zheng, Ruisheng, Liu, Yihan, Zhang, Liang, Liu, Yang, Rao, Changhui, Lin, Qing, Du, Zhimao, Zhong, Libo, Chen, Huadong, Chen, Yao

“…Abstract Magnetic flux ropes (MFRs), sets of coherently twisted magnetic field lines, are believed as core structures of various solar eruptions. Their…”
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Error analysis of CCD-based point source centroid computation under the background light by Ma, Xiaoyu, Rao, Changhui, Zheng, Hanqing

“…The CCD-based point source centroid computation (PSCC) error under the background light is analyzed integrally in theory, numerical simulation and experiment…”
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Mode-Voltage Constrained Control for Adaptive Optics System by Wang, Ruitao, Guo, Youming, Yan, Nanfei, Yang, Ying, Zhang, Lanqiang, Tu, Qiong, Li, Lingxiao, Rao, Changhui

“…In the adaptive optics system of astronomical observation, the deformable mirror and the tip/tilt mirror are coupled during the correction process. However,…”
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Astronomical adaptive optics: a review by Rao, Changhui, Zhong, Libo, Guo, Youming, Li, Min, Zhang, Lanqiang, Wei, Kai

“…Since the concept of adaptive optics(AO) was proposed in 1953, AO has become an indispensable technology for large aperture ground-based optical telescopes…”
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Numeric Study of Novel Compact Polarimeter for Full-Stokes Polarization Imaging Without Micro-Polarizer Array by Gu, Naiting, Xu, Duo, Huang, Linhai, Rao, Changhui

“…This paper proposed a novel polarimeter for full-Stokes polarization imaging without using any kind of micro-polarizer array. The key components of the…”
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Design and Analysis of a Novel Compact and Simultaneous Polarimeter for Complete Stokes Polarization Imaging with a Piece of Encoded Birefringent Crystal and a Micropolarizer Array by Gu, Naiting, Yao, Benxi, Huang, Linhai, Rao, Changhui

“…We report a compact and simultaneous polarimeter for complete Stokes polarization imaging by using an encoded birefringent crystal (EBC), a micropolarizer…”
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First light of the 1.8-m solar telescope–CLST by Rao, ChangHui, Gu, NaiTing, Rao, XueJun, Li, Cheng, Zhang, LanQiang, Huang, JinLong, Kong, Lin, Zhang, Ming, Cheng, YunTao, Pu, Yi, Bao, Hua, Guo, YouMing, Liu, YangYi, Yang, JinSheng, Zhong, LiBo, Wang, ChangJun, Fang, Kai, Zhang, XiaoJun, Chen, DongHong, Wang, Cheng, Fan, XinLong, Yan, ZhiWu, Chen, KeLe, Wei, XiYa, Zhu, Lei, Liu, Hong, Wan, YongJian, Xian, Hao, Ma, WenLi

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Piston and tilt cophasing of segmented laser array using Shack-Hartmann sensor by Wang, Xiaohua, Fu, Qiang, Shen, Feng, Rao, Changhui

“…We describe a concept of detecting the piston and tilt errors with a Shack-Hartmann sensor and correcting them simultaneously via a segmented deformable mirror…”
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A Real-Time Measurement System for Atmospheric Turbulence Intensity and Distribution Based on the GLAO System by Ran, Xian, Zhang, Lanqiang, Bao, Hua, Rao, Xuejun, Yang, Jinsheng, Tong, Dingkang, Wang, Cheng, Rao, Changhui

“…Measuring the intensity and distribution of atmospheric optical turbulence at large-aperture astronomical telescope sites is crucial to optimizing turbulence…”
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High-resolution visible imaging with piezoelectric deformable secondary mirror: experimental results at the 1.8-m adaptive telescope by Guo, Youming, Chen, Kele, Zhou, Jiahui, Li, Zhengdai, Han, Wenyu, Rao, Xuejun, Bao, Hua, Yang, Jinsheng, Fan, Xinlong, Rao, Changhui

“…Integrating deformable mirrors within the optical train of an adaptive telescope was one of the major innovations in astro-nomical observation…”
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Second generation solar adaptive optics for 1-m New Vacuum Solar Telescope at the Fuxian Solar Observatory by 饶长辉 朱磊 饶学军 张兰强 鲍华 孔林 郭友明 马学安 李梅 王成 张小军 樊新龙 陈东红 冯忠毅 王晓云 顾乃庭 王志勇

“…A second generation solar adaptive optics（AO） system is built and installed at the 1-m New Vacuum Solar Telescope（NVST） of the Fuxian Solar Observatory（FSO） in…”
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Prototype of solar ground layer adaptive optics at the 1 m New Vacuum Solar Telescope by 孔林 张兰强 朱磊 鲍华 郭友明 饶学军 钟立波 饶长辉

“…A prototype of a solar ground-layer adaptive optics （GLAO） system, which consists of a multi-direction corre- lating Shack-Hartmann wavefront sensor with 30…”
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