Ms. Lu Zhang Profile

Lu Zhang

at Beijing Institute of Technology

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Author

Publications (6)

Proceedings Article | 4 April 2023 Paper

Tip-tilt error detection for segments based on CNN

Xiang Li, Weirui Zhao, Hao Wang, Lu Zhang

Proceedings Volume 12617, 1261752 (2023) https://doi.org/10.1117/12.2666436

KEYWORDS: Mirrors, Error analysis, Image segmentation, Point spread functions, Education and training, Signal to noise ratio, Imaging systems, CCD cameras, Technology, Histograms

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Proceedings Article | 21 December 2022 Poster + Paper

Multi-tip/tilt errors simultaneous detection for segmented telescopes based on coherent diffraction

Lu Zhang, Weirui Zhao, Yuejin Zhao

Proceedings Volume 12315, 123151X (2022) https://doi.org/10.1117/12.2662689

KEYWORDS: Phase transfer function, Optical transfer functions, Mirrors, Point spread functions, Telescopes, James Webb Space Telescope, Error analysis, Wavefronts, Image segmentation, Segmented mirrors

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Proceedings Article | 8 July 2022 Paper

A piston detection method for segments via convolutional neural networks and its robustness analysis

Hao Wang, Gang Liu, Weirui Zhao, Lu Zhang, Yuejin Zhao

Proceedings Volume 12282, 122821L (2022) https://doi.org/10.1117/12.2620627

KEYWORDS: Point spread functions, Mirrors, Image segmentation, Telescopes, Signal to noise ratio, Charge-coupled devices, Error analysis, Tolerancing, Segmented mirrors, Light sources

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Proceedings Article | 12 March 2020 Paper

Accurate piston error detection unaffected by tip-tilt error

Lu Zhang, Weirui Zhao, Tiantian Liu, Yuejin Zhao

Proceedings Volume 11439, 114391S (2020) https://doi.org/10.1117/12.2556324

KEYWORDS: Optical transfer functions, Modulation transfer functions, Telescopes, Point spread functions, Mirrors, James Webb Space Telescope, Error analysis, Diffraction, Fourier transforms, Fourier optics

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Proceedings Article | 12 March 2020 Paper

MTF non-redundant distribution for multi-piston errors detection of segmented telescopes

Weirui Zhao, Tiantian Liu, Lu Zhang, Yuejin Zhao

Proceedings Volume 11439, 114391T (2020) https://doi.org/10.1117/12.2556326

KEYWORDS: Modulation transfer functions, Telescopes, Mirrors, James Webb Space Telescope, Point spread functions, Segmented mirrors, Diffraction, Fourier transforms, Charge-coupled devices, Error analysis

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Proceedings Article | 21 June 2019 Paper

High-accuracy piston error measurement with a large capture range based on coherent diffraction

Weirui Zhao, Lu Zhang, Yuejin Zhao, Liquan Dong, Mei Hui

Proceedings Volume 11056, 110563B (2019) https://doi.org/10.1117/12.2525311

KEYWORDS: Modulation transfer functions, Mirrors, Telescopes, Point spread functions, Image segmentation, Diffraction, Segmented mirrors, James Webb Space Telescope, Fourier transforms, Fourier optics

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Showing 5 of 6 publications

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