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Design, Performance and In-Orbit Evaluation Results of Tiangong-2 Wide-Band Imaging Spectrometer

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Book cover Proceedings of the Tiangong-2 Remote Sensing Application Conference

Part of the book series: Lecture Notes in Electrical Engineering ((LNEE,volume 541))

Abstract

The system design, performance and in-orbit evaluations of a push-broom wide-band imaging spectrometer (WIS) on Tiangong-2 space laboratory is introduced. The WIS has 100 m spatial resolution in ocean color bands (FOV is around 42°), which is the highest compared to other in-orbit ocean color sensors (GOCI, MODIS, VIIRS, and OLCI). Besides, WIS includes visible and near infrared (VNIR), shortwave infrared (SWIR) and thermal infrared (TIR) channels and has excellent performance in ocean color monitoring, and SNR in 0.4–0.8 μm is more than 400 at typical oceanic radiance. Average SNR at SWIR is more than 550 at typical atmosphere radiance. Moreover, the instrument’s average NE⊿T at TIR is lower than 20 mK, which is one of the best. The in-orbit tests reveal that the ocean color components retrieved by WIS are highly consistent with the results from the typical ocean color satellite sensors (MODIS, VIIRS and GOCI), but have finer structures due to higher spatial resolution.

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References

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Acknowledgement

Thanks to China Manned Space Engineering for providing space science and application data products of Tiangong-2.

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Authors and Affiliations

  1. Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai, 200083, China

    Jun Wei, Lei Ding, Yuyu Tang & Xin Feng

  2. State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, SOA, Hangzhou, 310012, China

    Xianqiang He

  3. National Satellite Ocean Application Service, SOA, Beijing, 100081, China

    Mingsen Lin

  4. Key Laboratory of Infrared System Detection and Imaging Technology, Chinese Academy of Sciences, Shanghai, 200083, China

    Jun Wei, Lei Ding, Yuyu Tang & Xin Feng

Authors
  1. Jun Wei
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  2. Lei Ding
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  3. Xianqiang He
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  4. Yuyu Tang
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  5. Xin Feng
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  6. Mingsen Lin
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Corresponding author

Correspondence to Jun Wei .

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Editors and Affiliations

  1. Technology and Engineering Center for Space Utilization, CAS, Beijing, China

    Yidong Gu

  2. Technology and Engineering Center for Space Utilization, CAS, Beijing, China

    Ming Gao

  3. Technology and Engineering Center for Space Utilization, CAS, Beijing, China

    Guangheng Zhao

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© 2019 Springer Nature Singapore Pte Ltd.

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Wei, J., Ding, L., He, X., Tang, Y., Feng, X., Lin, M. (2019). Design, Performance and In-Orbit Evaluation Results of Tiangong-2 Wide-Band Imaging Spectrometer. In: Gu, Y., Gao, M., Zhao, G. (eds) Proceedings of the Tiangong-2 Remote Sensing Application Conference. Lecture Notes in Electrical Engineering, vol 541. Springer, Singapore. https://doi.org/10.1007/978-981-13-3501-3_2

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  • DOI: https://doi.org/10.1007/978-981-13-3501-3_2

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  • Publisher Name: Springer, Singapore

  • Print ISBN: 978-981-13-3500-6

  • Online ISBN: 978-981-13-3501-3

  • eBook Packages: EngineeringEngineering (R0)

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