Atmospheric Correction of Gaofen-2 Panchromatic Satellite Images

Yang Zheng; Zhengqiang Li; Siheng Wang; Yan Ma; Kaitao Li; Yuhuan Zhang; Zhenhai Liu; Leiku Yang; Weizhen Hou; Haoran Gu; Yinna Li; Qian Yao; Zhuo He

doi:10.3788/AOS221549

Acta Optica Sinica, Volume. 43, Issue 6, 0601012(2023)

Atmospheric Correction of Gaofen-2 Panchromatic Satellite Images

Yang Zheng^1,2, Zhengqiang Li^1,2,3、*, Siheng Wang^4、**, Yan Ma², Kaitao Li^1,2, Yuhuan Zhang⁵, Zhenhai Liu⁶, Leiku Yang⁷, Weizhen Hou^2,3, Haoran Gu^1,8, Yinna Li^2,3, Qian Yao^2,3, and Zhuo He^2,3

Author Affiliations

¹Hainan Aerospace Information Research Institute, Sanya 572032, Hainan, China

²Aerospace Information Research Institute, State Environmental Protection Key Laboratory of Satellite Remote Sensing, Chinese Academy of Sciences, Beijing 100101, China

³University of Chinese Academy of Sciences, Beijing 100049, China

⁴China Academy of Space Technology, Remote Sensing Satellite General Department, Beijing 100094, China

⁵Satellite Application Center for Ecology and Environment, MEE, Beijing 100094, China

⁶Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, Anhui, China

⁷School of Surveying and Land Information Engineering, Henan Polytechnic University, Jiaozuo 454003, Henan, China

⁸College of Geography and Tourism, Anhui Normal University, Wuhu 241003, Anhui, China

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Figures & Tables(7)

Fig. 1. Exponential decay point spread function varies with pixel distance when spatial resolution is 0.8 m. (a) Three-dimensional surface diagram; (b) contour image

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Fig. 2. GF-2 panchromatic band satellite images before and after atmospheric correction. Apparent reflectance images of (a) polluted atmosphere and (d) clean atmosphere before atmospheric correction; initial surface reflectance images of (b) polluted atmosphere and (e) clean atmosphere after atmospheric radiation correction; true surface reflectance images of (c) polluted atmosphere and (f) clean atmosphere after adjacency effect correction

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Fig. 3. Comparison of clarity, contrast, edge energy, and detail energy of panchromatic band satellite images before and after atmospheric correction. (a) Clarity; (b) contrast; (c) edge energy; (d) detail energy

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Fig. 4. MTF of panchromatic band satellite images before and after atmospheric correction. (a) Polluted atmosphere; (b) clean atmosphere

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Table 1. Atmospheric parameters and observed geometric parameters of GF-2 panchromatic band image (450-900 nm)

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Table 1. Atmospheric parameters and observed geometric parameters of GF-2 panchromatic band image (450-900 nm)

Imaging time	2021-05-29T11：34：52	2021-08-16T11：34：01
Solar zenith angle /（ $°$ ）	23.4457	31.3780
Solar azimuth angle /（ $°$ ）	139.899	145.050
Satellite zenith angle /（ $°$ ）	3.4875	3.4877
Satellite azimuth angle /（ $°$ ）	96.2494	285.9640
Aerosol model	Sun-photometer measurements	Sun-photometer measurements
$D_{550 n m}$	0.1922	0.6689
Water vapor content /（g·cm^-2）	0.8092	1.7115
Ozone content /（g·cm^-2）	7.1709×10^-4	6.3409×10^-4

Table 2. AOD of Terra MODIS product and AOD measured at AERONET Baotou site
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Table 2. AOD of Terra MODIS product and AOD measured at AERONET Baotou site
Imaging time 2021-05-29T11：34：52 2021-08-16T11：34：01
$D_{550 n m}$ of AERONET Baotou site 0.1922 0.6689
$D_{550 n m}$ of MODIS 0.128 0.653

Table 3. Comparison of quantitative improvement of panchromatic band satellite images by atmospheric correction

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Table 3. Comparison of quantitative improvement of panchromatic band satellite images by atmospheric correction

Weather

condition

Clarity

improvement

Contrast

improvement

Edge energy

improvement

Detail energy

improvement

Normalized MTF

（normalized frequency is 0.5）

ρ_{s} / ρ_{T O A}

ρ_{t} / ρ_{T O A}

ρ_{s} / ρ_{T O A}

ρ_{t} / ρ_{T O A}

ρ_{s} / ρ_{T O A}

ρ_{t} / ρ_{T O A}

ρ_{s} / ρ_{T O A}

ρ_{t} / ρ_{T O A}

ρ_{s} / ρ_{T O A}

ρ_{t} / ρ_{T O A}

Clean weather

139

155

108

115

192

247

190

204

104

169

Polluted weather

154

216

116

143

235

497

234

245

107

474

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Yang Zheng, Zhengqiang Li, Siheng Wang, Yan Ma, Kaitao Li, Yuhuan Zhang, Zhenhai Liu, Leiku Yang, Weizhen Hou, Haoran Gu, Yinna Li, Qian Yao, Zhuo He. Atmospheric Correction of Gaofen-2 Panchromatic Satellite Images[J]. Acta Optica Sinica, 2023, 43(6): 0601012

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Paper Information

Category: Atmospheric Optics and Oceanic Optics

Received: Jul. 29, 2022

Accepted: Sep. 21, 2022

Published Online: Mar. 13, 2023

The Author Email: Li Zhengqiang (lizq@radi.ac.cn), Wang Siheng (rswangsiheng@163.com)

DOI:10.3788/AOS221549

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology

Table 1. Atmospheric parameters and observed geometric parameters of GF-2 panchromatic band image (450-900 nm)

Table 1. Atmospheric parameters and observed geometric parameters of GF-2 panchromatic band image (450-900 nm)

Table 2. AOD of Terra MODIS product and AOD measured at AERONET Baotou site

Table 2. AOD of Terra MODIS product and AOD measured at AERONET Baotou site

Table 3. Comparison of quantitative improvement of panchromatic band satellite images by atmospheric correction

Table 3. Comparison of quantitative improvement of panchromatic band satellite images by atmospheric correction