Radiometric Calibration for a Multispectral Sensor Onboard RISESAT Microsatellite Based on Lunar Observations

Imai, Masataka; Kurihara, Junichi; Kouyama, Toru; Kuwahara, Toshinori; Fujita, Shinya; Sakamoto, Yuji; Sato, Yuji; Saitoh, Sei-Ichi; Hirata, Takafumi; Yamamoto, Hirokazu; Takahashi, Yukihiro

Radiometric Calibration for a Multispectral Sensor Onboard RISESAT Microsatellite Based on Lunar Observations

Imai, Masataka; Kurihara, Junichi; Kouyama, Toru et al.

Sensors, 2021, 21(7), 2429

Permalink : https://hdl.handle.net/2115/81537

このアイテムのアクセス数:571件（2026-10-10 02:00 集計）

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https://doi.org/10.3390/s21072429			94

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アクセス権	open access
URI	https://hdl.handle.net/2115/81537
タイトル	Radiometric Calibration for a Multispectral Sensor Onboard RISESAT Microsatellite Based on Lunar Observations
著者	Imai, Masataka ; Kurihara, Junichi ; Kouyama, Toru ; Kuwahara, Toshinori ; Fujita, Shinya ; Sakamoto, Yuji ; Sato, Yuji ; Saitoh, Sei-Ichi ; Hirata, Takafumi ; Yamamoto, Hirokazu ; Takahashi, Yukihiro
著者名 Imai, Masataka
e-Rad_Researcher 00578479 著者名 Kurihara, Junichi
著者名 Kouyama, Toru
著者名 Kuwahara, Toshinori
著者名 Fujita, Shinya
著者名 Sakamoto, Yuji
著者名 Sato, Yuji
著者名 Saitoh, Sei-Ichi
著者名 Hirata, Takafumi
著者名 Yamamoto, Hirokazu
著者名 Takahashi, Yukihiro
言語	英語
キーワード	remote sensing
	Earth observation
	nano
	microsatellite
	lunar calibration
発行日	2021-04
出版者	MDPI
収録物名	Sensors
巻(号)	21(7)
ページ	2429
抄録	Radiometric calibration utilizing the Moon as a reference source is termed as lunar calibration. It is a useful method for evaluating the performance of optical sensors onboard satellites orbiting the Earth. Lunar calibration provides sufficient radiometric calibration opportunities without requiring any special equipment, and is suitable for nano/microsatellites. This study applies lunar calibration to a multispectral sensor, Ocean Observation Camera (OOC), on board a microsatellite named Rapid International Scientific Experiment Satellite. Simulating the brightness of the Moon based on the RObotic Lunar Observatory and SELENE/Spectrum Profiler models, sensitivity degradation was proven to be negligible in any of the four spectral bands of the OOC with the sensor temperature correction. A bluing trend in the OOC's sensor sensitivity was revealed, indicating a shorter observation wavelength shows larger irradiance. Comparing the top-of-atmosphere reflectance of Railroad Valley Playa with the Radiometric Calibration Network dataset revealed that the derived calibration parameter from the lunar calibration was valid for correcting the bluing trend in the visible range. Although the lunar and vicarious calibration parameters for the infrared band were unexpectedly inconsistent, lunar calibration could potentially contribute toward estimating the contaminated background radiance in the Earth observation images.
資源タイプ	学術雑誌論文
出版タイプ	Version of Record
関連情報 (isIdenticalTo)	出版社版DOI https://doi.org/10.3390/s21072429