A Method for Hyperspectral Reflectance Expansion from Multispectral Reflectance Model of Stable Sites and Uncertainty Analysis

Xin Lu; Yongguang Zhao; Lingling Ma; Ning Wang; Qijin Han; Zui Tao; Jianghong Zhao; Wan Li; Renfei Wang; Xuyuan Zhang

doi:10.3788/AOS240618

Acta Optica Sinica, Volume. 44, Issue 24, 2428001(2024)

A Method for Hyperspectral Reflectance Expansion from Multispectral Reflectance Model of Stable Sites and Uncertainty Analysis

Xin Lu^1,2, Yongguang Zhao^1、**, Lingling Ma^1、*, Ning Wang¹, Qijin Han³, Zui Tao¹, Jianghong Zhao⁴, Wan Li¹, Renfei Wang¹, and Xuyuan Zhang¹

Author Affiliations

¹National Engineering Laboratory for Satellite Remote Sensing Applications, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China

²School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing 100049, China

³China Centre for Resources Satellite Data and Application, Beijing 100094, China

⁴School of Geomatics and Urban Spatial Informatics, Beijing University of Civil Engineering and Architecture, Beijing 100044, China

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Figures & Tables(18)

Fig. 1. Flowchart of hyperspectral reflectance expansion for TOA reflectance model for stable sites

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Fig. 2. Average profile and standard deviation for AHSI of East of Dazaohuo site. (a) Average profile of AHSI TOA reflectance; (b) standard deviation of AHSI TOA reflectance

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Fig. 3. GF1/PMS images of stable sites. (a) East of Dazaohuo site (Nov. 20, 2019); (b) West of Xiao Qaidam Lake site (Aug. 14, 2019)

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Fig. 4. Relative spectral response function and TOA hyperspectral reflectance of East of Dazaohuo. (a) Sentinel2/MSI; (b) Landsat8/OLI

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Fig. 5. Sentinel2/MSI model predicted and observed values and their relative differences. (a) Observed values and model predictions; (b) relative differences

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Fig. 6. Landsat8/OLI model predicted and observed values and their relative differences. (a) Observed values and model predictions; (b) relative differences

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Fig. 7. Error bar plots for both models. (a) Dataset of Sentinel2/MSI; (b) dataset of Landsat8/OLI

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Fig. 8. Effect of atmospheric conditions on spectral scaling factors. (a) Spectral scaling factors under the same atmospheric condition; (b) spectral scaling factors under different atmospheric conditions

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Fig. 9. Effect of solar zenith angles on spectral scaling factors. (a) Spectral scaling factors under the same solar zenith angle; (b) spectral scaling factors under different solar zenith angles

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Fig. 10. Effect of view zenith angles on spectral scaling factors. (a) Spectral scaling factors under the same view zenith angle; (b) spectral scaling factors under different view zenith angles

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Table 1. Dataset for model construction and validation

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Table 1. Dataset for model construction and validation

Data use	Remote sensing sensor	Site	Time frame	Number of images
Model construction	GF5B/AHSI	East of Dazaohuo	2021-11-20; 2022-04-01; 2022-05-22; 2022-07-12 2022-09-08; 2022-12-26; 2023-01-02; 2023-02-15	8
Model construction	GF5B/AHSI	West of Xiao Qaidam Lake	2021-11-05; 2022-07-12	2
Model validation	Sentinel2/MSI	East of Dazaohuo	No cloud data in 2019, 2020, 2021	33
	Sentinel2/MSI	West of Xiao Qaidam Lake		47
	Landsat8/OLI	East of Dazaohuo		37
	Landsat8/OLI	West of Xiao Qaidam Lake		60

Table 2. Relative differences between East of Dazaohuo model predicted values and observed values of Sentinel2/MSI
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Table 2. Relative differences between East of Dazaohuo model predicted values and observed values of Sentinel2/MSI
Precision index B1 B2 B3 B4 B5 B6 B7 B8 B8A B11 B12
E_mre /% -3.99 1.61 -0.43 -0.39 0.25 -1.41 -0.78 -2.82 -0.81 0.83 0.94
E_rmse /% 0.76 0.42 0.34 0.39 0.53 0.63 0.48 1.02 0.47 0.56 0.68

Table 3. Relative differences between East of Dazaohuo model predicted values and observed values of Landsat8/OLI
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Table 3. Relative differences between East of Dazaohuo model predicted values and observed values of Landsat8/OLI
Precision index B1 B2 B3 B4 B5 B6 B7 B8
E_mre /% 1.02 2.93 0.85 1.49 0.61 1.50 3.46 0.43
E_rmse /% 0.29 0.58 0.36 0.54 0.44 0.78 1.41 0.34

Table 4. Comparison of two models based on Sentinel2/MSI dataset
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Table 4. Comparison of two models based on Sentinel2/MSI dataset
Band Multispectral model Hyperspectral model
E_mre E_rmse E_mre E_rmse
B2 -1.02% 0.36% -1.61% 0.42%
B3 0.37% 0.33% 0.43% 0.34%
B4 0.63% 0.42% 0.39% 0.39%
B8A 0.63% 0.46% 0.81% 0.47%
B12 -0.12% 0.61% -0.94% 0.68%

Table 5. Comparison of two models based on Landsat8/OLI dataset
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Table 5. Comparison of two models based on Landsat8/OLI dataset
Band Multispectral model Hyperspectral model
E_mre /% E_rmse /% E_mre /% E_rmse /%
B2 -1.45 0.36 -2.93 0.58
B3 -1.38 0.43 -0.85 0.36
B4 -0.76 0.42 -1.49 0.54
B5 -0.66 0.44 -0.61 0.44
B7 -2.71 1.16 -3.46 1.41

Table 6. Relative differences between West of Xiao Qaidam Lake model predicted values and observed values of Sentinel2/MSI
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Table 6. Relative differences between West of Xiao Qaidam Lake model predicted values and observed values of Sentinel2/MSI
Precision index B1 B2 B3 B4 B5 B6 B7 B8 B8A B11 B12
E_mre /% 3.01 -1.82 0.39 0.45 -1.37 0.31 0.86 1.88 1.71 -1.56 2.12
E_rmse /% 0.65 0.47 0.35 0.43 0.71 0.50 0.52 0.87 0.73 0.90 1.05

Table 7. Relative differences between West of Xiao Qaidam Lake model predicted values and observed values of Landsat8/OLI
View table
Table 7. Relative differences between West of Xiao Qaidam Lake model predicted values and observed values of Landsat8/OLI
Precision index B1 B2 B3 B4 B5 B6 B7 B8
E_mre /% -1.78 -2.74 -0.21 -0.78 0.37 -1.60 0.99 0.21
E_rmse /% 0.47 0.65 0.41 0.55 0.49 0.90 0.72 0.42

Table 8. Uncertainty of calibration results of TOA hyperspectral reflectance model for stable sites

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Table 8. Uncertainty of calibration results of TOA hyperspectral reflectance model for stable sites

Uncertainty contributor		Relative standard uncertainty /%
Uncertainty contributor		B1	B2	B3	B4	B5	B6	B7	B8
Hyperspectral model	VZA	0.29	0.16	0.07	0.08	0.07	0.08	0.40	0.09
	VAA	0.03	0.01	0.01	0.01	0.01	0.01	0.05	0.01
	SZA	0.05	0.01	0.01	0.01	0.01	0.01	0.11	0.01
	SAA	0.03	0.01	0.01	0.01	0.01	0.01	0.05	0.01
	MODIS measurement	2.00	2.00	2.00	2.00	2.00	2.00	2.00	2.00
	Fitting error	2.26	2.24	2.04	1.95	2.00	1.98	2.26	2.15
	Reference spectrum	3.00	3.00	3.00	3.00	3.00	3.00	3.00	3.00
	Spectral scaling factor	3.00	0.50	0.50	0.50	0.50	0.50	3.00	0.50
Center wavelength offset		0.56	0.96	0.13	0.07	0.19	0.14	0.76	0.39
Surface homogeneity		0.91	0.79	0.63	0.57	0.63	0.59	0.65	0.64
Overall uncertainty		5.32	4.45	4.22	4.17	4.21	4.19	5.32	4.29

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Xin Lu, Yongguang Zhao, Lingling Ma, Ning Wang, Qijin Han, Zui Tao, Jianghong Zhao, Wan Li, Renfei Wang, Xuyuan Zhang. A Method for Hyperspectral Reflectance Expansion from Multispectral Reflectance Model of Stable Sites and Uncertainty Analysis[J]. Acta Optica Sinica, 2024, 44(24): 2428001

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Paper Information

Category: Remote Sensing and Sensors

Received: Feb. 5, 2024

Accepted: Apr. 14, 2024

Published Online: Dec. 12, 2024

The Author Email: Zhao Yongguang (zhaoyg@aircas.ac.cn), Ma Lingling (mall@aircas.ac.cn)

DOI:10.3788/AOS240618

CSTR:32393.14.AOS240618

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology

Table 1. Dataset for model construction and validation

Table 1. Dataset for model construction and validation

Table 2. Relative differences between East of Dazaohuo model predicted values and observed values of Sentinel2/MSI

Table 2. Relative differences between East of Dazaohuo model predicted values and observed values of Sentinel2/MSI

Table 3. Relative differences between East of Dazaohuo model predicted values and observed values of Landsat8/OLI

Table 3. Relative differences between East of Dazaohuo model predicted values and observed values of Landsat8/OLI

Table 4. Comparison of two models based on Sentinel2/MSI dataset

Table 4. Comparison of two models based on Sentinel2/MSI dataset

Table 5. Comparison of two models based on Landsat8/OLI dataset

Table 5. Comparison of two models based on Landsat8/OLI dataset

Table 6. Relative differences between West of Xiao Qaidam Lake model predicted values and observed values of Sentinel2/MSI

Table 6. Relative differences between West of Xiao Qaidam Lake model predicted values and observed values of Sentinel2/MSI

Table 7. Relative differences between West of Xiao Qaidam Lake model predicted values and observed values of Landsat8/OLI

Table 7. Relative differences between West of Xiao Qaidam Lake model predicted values and observed values of Landsat8/OLI

Table 8. Uncertainty of calibration results of TOA hyperspectral reflectance model for stable sites

Table 8. Uncertainty of calibration results of TOA hyperspectral reflectance model for stable sites