Dr. Youngwan Choi Profile

Dr. Youngwan Choi

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Publications (14)

Proceedings Article | 9 September 2019 Paper

Study on the feasibility of micro camera systems for asynchronous, gigantic satellite constellation

Youngwan Choi

Proceedings Volume 11127, 111270Z (2019) https://doi.org/10.1117/12.2529090

KEYWORDS: Imaging systems, Modulation transfer functions, Cameras, Tolerancing, Satellites, Sensors, Near infrared, Distortion, Optical design, Satellite imaging, Spectral imaging cameras, Electro optical sensors, Earth observing sensors, Remote sensing system design, Space sensors

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Proceedings Article | 21 November 2017 Open Access

Development of TMA-based imaging system for hyperspectral application

Young-Wan Choi, Seung-Uk Yang, Myung-Seok Kang, Ee-Eul Kim

Proceedings Volume 10566, 1056629 (2017) https://doi.org/10.1117/12.2308274

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Proceedings Article | 21 November 2017 Open Access

Medium-sized aperture camera for Earth observation

Eugene Kim, Young-Wan Choi, Myung-Seok Kang, Ee-Eul Kim, Ho-Soon Yang, Ad. Aziz Ad. Rasheed, Ahmad Sabirin Arshad

Proceedings Volume 10568, 105680H (2017) https://doi.org/10.1117/12.2308001

KEYWORDS: Modulation transfer functions, Telescopes, Mirrors, Space telescopes, Cameras, Satellites, Charge-coupled devices, Lenses, Off axis mirrors, Wavefronts

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Proceedings Article | 1 October 2008 Paper

MTF assessment of high resolution satellite images using ISO 12233 slanted-edge method

Hyundeok Hwang, Young-Wan Choi, Sunghee Kwak, Moongyu Kim, WonKyu Park

Proceedings Volume 7109, 710905 (2008) https://doi.org/10.1117/12.800055

KEYWORDS: Modulation transfer functions, Satellites, Point spread functions, Earth observing sensors, Satellite imaging, Convolution, High resolution satellite images, Signal to noise ratio, Standards development, Filtering (signal processing)

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Proceedings Article | 21 August 2008 Paper

Pre-launch performance characterization of EOS-C camera

Young-Wan Choi, Seongmin Kang, Jiho Yun, Jongun Kim, Myungseok Kang, Sungkeun Jeong, Hyungu Kim, Jaehun Song, Ee-Eul Kim

Proceedings Volume 7081, 708106 (2008) https://doi.org/10.1117/12.794873

KEYWORDS: Modulation transfer functions, Cameras, Spatial frequencies, Modulation, Fermium, Frequency modulation, Imaging systems, Near infrared, Signal to noise ratio, Mirrors

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Proceedings Article | 5 October 2007 Paper

Development of high-performance optical system for small satellites

Young-Wan Choi, Seung-Uk Yang, Myung-Seok Kang, Ee-Eul Kim

Proceedings Volume 6677, 66771A (2007) https://doi.org/10.1117/12.734059

KEYWORDS: Modulation transfer functions, Mirrors, Prototyping, Electro optical modeling, Tolerancing, Wavefronts, Error analysis, Satellites, Telescopes, Optical alignment

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Proceedings Article | 27 September 2007 Paper

Development of dual imaging optical sensor (DIOS) for small satellites

Young-Wan Choi, Myung-Seok Kang, Sung-Keun Jeong, Ji-Ho Yun, Seung-Uk Yang, Jongun Kim, Ee-Eul Kim

Proceedings Volume 6677, 667719 (2007) https://doi.org/10.1117/12.733587

KEYWORDS: Cameras, Modulation transfer functions, Imaging systems, Optical sensors, Satellites, Electro optical imaging, Staring arrays, Mirrors, Collimators, Optical imaging

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Proceedings Article | 13 September 2005 Paper

Lessons learned from the optics and focal plane alignment of a wide field of view RC telescope

Eugene Kim, Young-Wan Choi, Myung-Seok Kang, Ee-Eul Kim, Ho-Soon Yang, Ad. Mohd. Afiq Bin Ismail, Ahmad Sabirin Arshad

Proceedings Volume 5877, 58770C (2005) https://doi.org/10.1117/12.616341

KEYWORDS: Mirrors, Modulation transfer functions, Telescopes, Space telescopes, Cameras, Wavefronts, Error analysis, Optical fabrication, Optical alignment, Collimators

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Proceedings Article | 22 August 2005 Paper

Pre-flight performance characterization of RazakSAT medium-sized aperture camera (MAC)

Young-Wan Choi, Eugene Kim, Myung-Seok Kang, Sung-Keun Jeong, Seung-Uk Yang, Jongun Kim, Ee-Eul Kim, Sung-Dong Park, Ho-Soon Yang, Ad. Afiq bin Ismail, Ahmad Arshad

Proceedings Volume 5882, 588205 (2005) https://doi.org/10.1117/12.616878

KEYWORDS: Modulation transfer functions, Staring arrays, Collimators, Cameras, Imaging systems, Telescopes, Signal processing, Electro optical modeling, Space telescopes, Electronics

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Proceedings Article | 26 October 2004 Paper

Development of small-sized aperture camera (SAC) for high-performance imaging on small satellites

Young-Wan Choi, Eugene Kim, Myung-Seok Kang, Seung-Uk Yang, Jongun Kim, Ee-Eul Kim, Sung-Dong Park, Ho-Soon Yang

Proceedings Volume 5542, (2004) https://doi.org/10.1117/12.560223

KEYWORDS: Cameras, Satellites, Imaging systems, Electroluminescence, Mirrors, Error analysis, Satellite imaging, Modulation transfer functions, Directed self assembly, Stress analysis

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Proceedings Article | 26 October 2004 Paper

Medium-sized aperture camera for Earth observation from space

Eugene Kim, Young-Wan Choi, Myung-Seok Kang, Ee-Eul Kim, Ho-Soon Yang, Abdul Aziz Abdul Rasheed, Ahmad Arshad

Proceedings Volume 5542, (2004) https://doi.org/10.1117/12.560207

KEYWORDS: Mirrors, Modulation transfer functions, Space telescopes, Telescopes, Cameras, Satellites, Lenses, Aspheric optics, Spherical lenses, Fermium

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Proceedings Article | 30 September 2004 Paper

Alignment methods for Cassegrain and RC telescope with wide field of view

Ho-Soon Yang, Yun-Woo Lee, Eugene Kim, Young-Wan Choi, Ad. Aziz Rasheed

Proceedings Volume 5528, (2004) https://doi.org/10.1117/12.558998

KEYWORDS: Telescopes, Space telescopes, Mirrors, Interferometers, Cameras, Optical alignment, Monochromatic aberrations, Wavefronts, Satellites, Device simulation

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Proceedings Article | 15 November 2002 Paper

Aluminium-based high-resolution camera for a small satellite

Ho Soon Yang, Young-Wan Choi, Myung-Suk Kang, Seong-Keun Jeong, Seung-Uk Yang, Ee-Eul Kim, Ad Aziz Ad Rasheed

Proceedings Volume 4824, (2002) https://doi.org/10.1117/12.451859

KEYWORDS: Mirrors, Modulation transfer functions, Phase modulation, Cameras, Satellites, Telescopes, Aluminum, Optical fabrication, Lenses, Surface finishing

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Proceedings Article | 19 June 2002 Paper

Dual testing of a large-aperture optical system

Jong Sup Song, Yun Woo Lee, Jae Bong Song, In Won Lee, Ho-Soon Yang, Young-Wan Choi, Jae Heung Jo

Proceedings Volume 4778, (2002) https://doi.org/10.1117/12.473560

KEYWORDS: Modulation transfer functions, Wavefronts, Telescopes, Mirrors, Interferometers, Collimators, Off axis mirrors, Collimation, Optical testing, Image analysis

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Showing 5 of 14 publications

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