Research on On-Orbit Radiometric Calibration Method for Remote Sensors with Large Fields of View Based on Snow and Ice Scenes

Yuwei Pan; Feinan Chen; Donggen Luo; Liang Sun; Yi Wang; Feng Ji; Jingjing Chen; Jin Hong

doi:10.3788/AOS222106

Acta Optica Sinica, Volume. 43, Issue 18, 1812005(2023)

Research on On-Orbit Radiometric Calibration Method for Remote Sensors with Large Fields of View Based on Snow and Ice Scenes

Yuwei Pan^1,2, Feinan Chen¹, Donggen Luo^1、*, Liang Sun¹, Yi Wang¹, Feng Ji², Jingjing Chen², and Jin Hong¹

Author Affiliations

¹Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, Anhui, China

²School of Instrument Science and Opto-Electronics Engineering, Hefei University of Technology, Hefei 230009, Anhui, China

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Figures & Tables(19)

Fig. 1. Remote sensing images of Gaofen-5 B star on September 19, 2021. (a) Global remote sensing image; (b) partial remote sensing images of Greenland

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Fig. 2. Spectral response function diagram of Gaofen-5 DPC

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Fig. 3. Flow chart of on-orbit radiometric calibration for ice and snow scenes

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Fig. 4. Comparison charts of TOA reflectance measured from DPC and calibrated TOA reflectance in each band. (a) Band 443 nm;

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Fig. 5. Relative error diagram of TOA radiance measured from DPC and calibrated TOA radiance in each band

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Fig. 6. Effects of AOT changes on TOA reflectivity in visible light band

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Fig. 7. Effects of ozone content changes on TOA reflectivity in visible light band

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Fig. 8. Effects of water vapor content changes on TOA reflectivity in visible light band

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Fig. 9. Relative error plot of TOA radiance measured from DPC and calibrated TOA radiance in each band under three different ice and snow models. (a) Coarse snow; (b) medium snow; (c) fine snow

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Fig. 10. Comparison of the calibration results of the Greenland ice scene with those of the desert scene

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Fig. 11. Comparison of the calibration results of the Greenland ice scene with those of the ocean scene

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Table 1. Band parameters DPC

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Table 1. Band parameters DPC

Band /nm	Polarization	Central wavelength /nm	Bandwidth /nm	Mission
443	No	443.3	20	Ocean and aerosol
490	Yes	488.9	20	Ocean
565	No	564.7	20	Ocean
670	Yes	668.8	20	Vegetation and aerosol
763	No	761.4	10	Cloud
765	No	763.1	40	Aerosol and cloud
865	Yes	861.8	40	Vegetation and aerosol
910	No	907.1	20	Water content

Table 2. Result of the calculation of the coefficients $b_{0 i}$ 、 $b_{1 i}$ 、 $b_{2 i}$ in the function $a_{i}$
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Table 2. Result of the calculation of the coefficients $b_{0 i}$ 、 $b_{1 i}$ 、 $b_{2 i}$ in the function $a_{i}$
$i$ $b_{0 i}$ $b_{1 i}$ $b_{2 i}$
0 0.9216 －0.3785 1.0016
1 0.1994 0.7084 －1.8176
2 0.1234 2.0702 －4.9036
3 0.0751 0.8440 －2.2769

Table 3. Error statistical analysis of TOA reflectance measured from DPC and calibrated TOA reflectance

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Table 3. Error statistical analysis of TOA reflectance measured from DPC and calibrated TOA reflectance

Band /nm	Intercept	Mean	Standard deviation /%	RMSE /%
443	0.9789	0.9941	1.02	0.71
490	0.9933	1.0130	1.68	1.60
565	0.9832	0.9942	1.49	1.48
670	0.9597	0.9943	2.47	1.26
763	0.9035	0.9406	2.34	1.24
765	0.9215	0.9506	2.00	1.04
865	0.9094	0.9563	2.85	1.18
910	0.9170	0.9605	2.31	1.32

Table 4. Statistical analysis of relative error of TOA radiance calibration TOA radiance measured from DPC in each band
View table
Table 4. Statistical analysis of relative error of TOA radiance calibration TOA radiance measured from DPC in each band
Band /nm 443 490 565 670 763 765 865 910
Average relative error /% 2.85 1.92 3.02 4.22 6.41 8.03 8.8 8.71
STD of relative error /% 0.79 0.59 0.82 0.95 1.21 0.95 1.13 1.06

Table 5. Factor uncertainties and synthetic uncertainties for each visible band
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Table 5. Factor uncertainties and synthetic uncertainties for each visible band
Band /nm $u (δ_{B R D F})$ /% $u (δ_{A O T})$ /% $u (δ_{O_{3}})$ /% $u (δ_{H_{2} O})$ /% $u (δ_{t o t a l})$ /%
443 2.0 0.01 0 0 2.0
490 2.0 0 0 0 2.0
565 2.0 0.01 0.02 0 2.0
670 2.0 0.01 0.01 0 2.0

Table 6. Statistical analysis of the TOA reflectance measured by DPC and the calibration TOA reflectance error in each band under the three models

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Table 6. Statistical analysis of the TOA reflectance measured by DPC and the calibration TOA reflectance error in each band under the three models

Band /nm	Coarse snow		Medium snow		Fine snow
Band /nm	Average relative error /%	STD of relative error /%	Average relative error /%	STD of relative error /%	Average relative error /%	STD of relative error /%
443	3.34	1.78	2.72	1.7	2.06	1.53
490	1.69	1.32	2.33	1.51	1.91	1.38
565	2.48	1.68	3.9	2.11	3.2	1.94
670	2.13	1.71	3.79	2.21	2.37	1.71
763	10.55	2.77	4.16	2.78	2.43	1.93
765	5.04	2.71	3.28	2.21	2.45	1.97
865	8.55	2.95	4.34	2.64	3.27	2.58
910	8.61	3.13	8.05	3.56	2.79	2.08

Table 7. Statistical analysis of the calibration results of the Greenland ice and snow scene and the calibration results of the desert scene

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Table 7. Statistical analysis of the calibration results of the Greenland ice and snow scene and the calibration results of the desert scene

Band /nm	Mean			Standard deviation /%
Band /nm	Greenland	Desert	deviation /%	Greenland	Desert
443	0.9875	0.9715	1.6	0.77	2.49
490	0.9989	1.0003	－0.14	0.57	2.91
565	0.9839	0.9701	1.38	0.78	2.72
670	0.9743	0.9688	0.55	0.89	2.34
763	0.9227	0.8947	2.80	1.06	2.42
765	0.9357	0.9498	1.25	0.83	2.32
865	0.9332	0.9299	0.33	0.98	2.16
910	0.9425	0.9690	-2.66	0.93	2.61

Table 8. Statistical analysis of the calibration results of the Greenland ice and snow scene and the calibration results of the ocean scene
View table
Table 8. Statistical analysis of the calibration results of the Greenland ice and snow scene and the calibration results of the ocean scene
Band /nm Mean Standard deviation/%
Greenland Ocean deviation/% Greenland Ocean
443 0.9875 1.0048 －1.73 0.77 1.52
490 0.9989 1.0322 －3.33 0.57 2.18

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Yuwei Pan, Feinan Chen, Donggen Luo, Liang Sun, Yi Wang, Feng Ji, Jingjing Chen, Jin Hong. Research on On-Orbit Radiometric Calibration Method for Remote Sensors with Large Fields of View Based on Snow and Ice Scenes[J]. Acta Optica Sinica, 2023, 43(18): 1812005

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Paper Information

Category: Instrumentation, Measurement and Metrology

Received: Dec. 7, 2022

Accepted: Feb. 24, 2023

Published Online: Sep. 4, 2023

The Author Email: Luo Donggen (dgluo@aiofm.ac.cn)

DOI:10.3788/AOS222106

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology

Table 1. Band parameters DPC

Table 1. Band parameters DPC

Table 2. Result of the calculation of the coefficients b0i、b1i、b2i in the function ai

Table 2. Result of the calculation of the coefficients b0i、b1i、b2i in the function ai

Table 3. Error statistical analysis of TOA reflectance measured from DPC and calibrated TOA reflectance

Table 3. Error statistical analysis of TOA reflectance measured from DPC and calibrated TOA reflectance

Table 4. Statistical analysis of relative error of TOA radiance calibration TOA radiance measured from DPC in each band

Table 4. Statistical analysis of relative error of TOA radiance calibration TOA radiance measured from DPC in each band

Table 5. Factor uncertainties and synthetic uncertainties for each visible band

Table 5. Factor uncertainties and synthetic uncertainties for each visible band

Table 6. Statistical analysis of the TOA reflectance measured by DPC and the calibration TOA reflectance error in each band under the three models

Table 6. Statistical analysis of the TOA reflectance measured by DPC and the calibration TOA reflectance error in each band under the three models

Table 7. Statistical analysis of the calibration results of the Greenland ice and snow scene and the calibration results of the desert scene

Table 7. Statistical analysis of the calibration results of the Greenland ice and snow scene and the calibration results of the desert scene

Table 8. Statistical analysis of the calibration results of the Greenland ice and snow scene and the calibration results of the ocean scene

Table 8. Statistical analysis of the calibration results of the Greenland ice and snow scene and the calibration results of the ocean scene

Table 2. Result of the calculation of the coefficients $b_{0 i}$ 、 $b_{1 i}$ 、 $b_{2 i}$ in the function $a_{i}$

Table 2. Result of the calculation of the coefficients $b_{0 i}$ 、 $b_{1 i}$ 、 $b_{2 i}$ in the function $a_{i}$