Hao LIANG, Wei-xin XU, Xu-hui DUAN, Juan ZHANG, Na DAI, Qiang-zhi XIAO, Qi-yu WANG. Threshold Calibration of Key Parameters of Withered Grass Based on PROSAIL Model in Qinghai-Tibet Plateau[J]. Spectroscopy and Spectral Analysis, 2022, 42(4): 1144
- Spectroscopy and Spectral Analysis
- Vol. 42, Issue 4, 1144 (2022)
Fig. 1. Measured withered grass spectrum (MW) on November 27, 2020 in Haibei
Fig. 2. The average spectrum for all samples on August 30 and December 30 respectively in Haibei
Fig. 3. The measured spectrum of withered grass from 400 to 1 300 nm after data preprocessing
Fig. 4. Maximum and minimum of simulated spectral serials of withered grass obtained by two-step identification
Fig. 5. Percentage area stacking of sensitivity index for 10 main characteristic parameters
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Table 1. Initial value of PROSAIL model
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Table 2. Threshold and coupling relation index of withered grass characteristic parameters simulated optimized by sensitivity analysis
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Table 3. Reference table for 10 main parameters threshed of withered grass
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