2022 Fiscal Year Final Research Report
Development of multiband imaging for planetary exploration by small deployable camera
Project/Area Number |
17K14380
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Research Category |
Grant-in-Aid for Young Scientists (B)
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Allocation Type | Multi-year Fund |
Research Field |
Solid earth and planetary physics
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Research Institution | Chiba Institute of Technology |
Principal Investigator |
Ishibashi Ko 千葉工業大学, 惑星探査研究センター, 上席研究員 (30551593)
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Project Period (FY) |
2017-04-01 – 2023-03-31
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Keywords | 惑星探査 / マルチバンドカメラ / ハイパースペクトル画像センサ / 部分最小二乗法(PLS) |
Outline of Final Research Achievements |
This study established a measurement method for a small deployable multi-band camera for planetary exploration. A hyperspectral imager (HSI) can be used to construct a compact multi-band camera with a single optical system and a single image sensor, similar to a conventional camera. The HSI has bandpass filters with different spectral transmittance for each pixel of a CMOS imager, but the acquired spectra contain significant errors due to their transmittance characteristics. In this study, a method based on the partial least squares (PLS) method was investigated to remove the error. As a result, it was shown that the error could be removed from the acquired data and corrected to the correct spectrum. This result provides a prospect for developing a compact, deployable multi-band camera for planetary exploration using the HSI.
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Free Research Field |
惑星科学(惑星探査)
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Academic Significance and Societal Importance of the Research Achievements |
本研究では,惑星探査機に搭載可能な小型分離マルチバンドカメラを開発するために必要な基礎技術の確立を行い,その結果開発の目途が立った.小型分離カメラは小惑星探査機「はやぶさ2」に搭載されて,小惑星リュウグウ上で行われた衝突実験を観測し,小天体上での衝突現象の解明に貢献した.宇宙における衝突現象は,太陽系(惑星系)の形成と進化を理解する上で鍵となる現象である.本研究の結果から,小型分離カメラを複数の波長で撮像を行うことのできるマルチバンドカメラへと発展させることが可能となり,得られる情報が飛躍的に増加する.よって,将来の惑星探査,特に日本が世界をリードする小天体探査に大きく貢献するものである.
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