Design and verification of the spectrometer on “Gou Mang” satellite

doi:10.16708/j.cnki.1000-758X.2023.0093

Abstract

Abstract: With the proposal of the Double Carbon target，the development of quantitative remote sensing technology for carbon monitoring is increasingly urgent.The detection of solarinduced fluorescence can be used as an important means to evaluate the actual photosynthesis effect of vegetation and the carbon cycle efficiency.This paper introduces the performance indicators，design scheme，system composition，verification results and in-orbit operation of the spectrometer on the “Gou Mang” satellite.The spectrometer is a precise optical instrument for solar-induced fluorescence detection.The system adopts a design scheme of pushbroom imaging and grating dispersion spectroscopy.After testing and verification，the spectral resolution is better than 0.3nm，and the ground pixel resolution reaches 1.5km.Under typical input radiance conditions，the system SNR is better than 500，and all indicators meet or exceed the detection task requirements.It has high spectral resolution，high SNR and high stability detection capability.Its good performance will play an important role in vegetation monitoring and carbon cycle applications.

Key words: solar-induced fluorescence remote sensing, spectrometer, hyperspectral, pushbroom imaging, grating dispersion, design scheme and performance

JING Yazhou, DUAN Pengfei, LI Bicen, WANG Weigang, AN Ning, XIA Chenhui, CUI Bolun. Design and verification of the spectrometer on “Gou Mang” satellite[J]. Chinese Space Science and Technology, 2023, 43(6): 142-149.

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URL: https://journal26.magtechjournal.com/kjkxjs/EN/10.16708/j.cnki.1000-758X.2023.0093

https://journal26.magtechjournal.com/kjkxjs/EN/Y2023/V43/I6/142

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Design and verification of the spectrometer on “Gou Mang” satellite

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