• Infrared and Laser Engineering
  • Vol. 49, Issue 5, 20190460 (2020)
Zhenchao Wang1, Jiahang Liu1、*, Qinghong Sheng1, and Yunzhao Wu2
Author Affiliations
  • 1College of Astronautics, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
  • 2Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210034, China
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    DOI: 10.3788/IRLA20190460 Cite this Article
    Zhenchao Wang, Jiahang Liu, Qinghong Sheng, Yunzhao Wu. Study on space weathering of Chang′e-4 landing site by in situ spectra[J]. Infrared and Laser Engineering, 2020, 49(5): 20190460 Copy Citation Text show less
    Image and spectra of site 15 of Chang'e-4. (a) Imaging data (450−945 nm), red circle is the scope of the SWIR data; (b) spectra inside the red circle scope
    Fig. 1. Image and spectra of site 15 of Chang'e-4. (a) Imaging data (450−945 nm), red circle is the scope of the SWIR data; (b) spectra inside the red circle scope
    Image and spectra of site 20 of Chang'e-4. (a) Imaging data (450−945 nm), red circle is the scope of the SWIR data; (b) spectra inside the red circle scope
    Fig. 2. Image and spectra of site 20 of Chang'e-4. (a) Imaging data (450−945 nm), red circle is the scope of the SWIR data; (b) spectra inside the red circle scope
    (a) Original and (b) the normalized diagram at 1 100 nm wavelength of the modeled spectra and the selected spectra
    Fig. 3. (a) Original and (b) the normalized diagram at 1 100 nm wavelength of the modeled spectra and the selected spectra
    ParametersVNISSWIR
    Wavelength/nm450-950900-2 400
    Band resolution/nm2-103-12
    View field/(°)8.5×8.5ф3.58
    Numbers of valid pixel≥256×2561
    Detective distance/m0.7-1.3
    Detective time/min~2
    Table 1. Parameters of the CE-4, Yutu-2 visible and near-IR imaging spectrometer (VNIS) and short-wave infrared (SWIR) spectrometer
    ParametersPoint 15Point 20
    Local time08:32:0015:35:00
    Distance to the Sun/(AU)0.989 146 370.991 539 51
    View angle/(°)1746.26
    Incident angle/(°)70.564.54
    View azimuth angle/(°)143.3283.03
    Incident azimuth angle/(°)61.48296.66
    Phase angle/(°)65.48104.24
    Table 2. Data acquisition conditions of Site 15 and Site 20 by Yutu-2
    Zhenchao Wang, Jiahang Liu, Qinghong Sheng, Yunzhao Wu. Study on space weathering of Chang′e-4 landing site by in situ spectra[J]. Infrared and Laser Engineering, 2020, 49(5): 20190460
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