Infrared and Laser Engineering, Volume. 49, Issue 5, 20190460(2020)
Study on space weathering of Chang′e-4 landing site by in situ spectra
Figures & Tables(5)
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
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
Fig. 3. (a) Original and (b) the normalized diagram at 1 100 nm wavelength of the modeled spectra and the selected spectra
Table 1. Parameters of the CE-4, Yutu-2 visible and near-IR imaging spectrometer (VNIS) and short-wave infrared (SWIR) spectrometer
View tableView in ArticleTable 1. Parameters of the CE-4, Yutu-2 visible and near-IR imaging spectrometer (VNIS) and short-wave infrared (SWIR) spectrometer
Parameters VNIS SWIR Wavelength/nm 450-950 900-2 400 Band resolution/nm 2-10 3-12 View field/(°) 8.5×8.5 ф 3.58Numbers of valid pixel ≥256×256 1 Detective distance/m 0.7-1.3 Detective time/min ~2
Table 2. Data acquisition conditions of Site 15 and Site 20 by Yutu-2
View tableView in ArticleTable 2. Data acquisition conditions of Site 15 and Site 20 by Yutu-2
Parameters Point 15 Point 20 Local time 08:32:00 15:35:00 Distance to the Sun/(AU) 0.989 146 37 0.991 539 51 View angle/(°) 17 46.26 Incident angle/(°) 70.5 64.54 View azimuth angle/(°) 143.32 83.03 Incident azimuth angle/(°) 61.48 296.66 Phase angle/(°) 65.48 104.24
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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
Paper Information
Category: Deep space exploration technology
Received: Feb. 3, 2020
Accepted: --
Published Online: Aug. 17, 2020
The Author Email: Liu Jiahang (jhliu@nuaa.edu.cn)
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