In-Flight Cross Radiometric Calibration of DPC/GaoFen-5 and MODIS/Aqua

Sifeng Zhu; Lili Qie; Hua Xu; Yanqing Xie; Zhengqiang Li; Yisong Xie; Bangyu Ge; Kaitao Li

doi:10.3788/AOS202242.1828008

Acta Optica Sinica, Volume. 42, Issue 18, 1828008(2022)

In-Flight Cross Radiometric Calibration of DPC/GaoFen-5 and MODIS/Aqua

Sifeng Zhu^1,2,3, Lili Qie^1、*, Hua Xu¹, Yanqing Xie^1,2, Zhengqiang Li^1,2、**, Yisong Xie¹, Bangyu Ge¹, and Kaitao Li^1,3

Author Affiliations

¹National Engineering Laboratory for Satellite Remote Sensing Applications, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100101, China

²University of Chinese Academy of Sciences, Beijing 100049, China

³Key Laboratory of Earth Observation of Hainan Province, Hainan Research Institute, Aerospace Information Research Institute, Chinese Academy of Sciences, Sanya 572000, Hainan, China

show less

Abstract Get PDF(in Chinese)

Figures & Tables(9)

Fig. 1. Comparison of spectral response function between MODIS/Aqua and DPC/GaoFen-5

Download full size

Fig. 2. In-flight cross radiative calibration process over desert site

Download full size

Fig. 3. DPC cloud identification results over desert sites. (a) True color band fusion image; (b) cloud mask image

Download full size

Fig. 4. Schematic diagram of interpolation method for directional reflectance of DPC and MODIS based on VIIRS BRDF product

Download full size

Fig. 5. Uncertainty of cross calibration caused by surface BRDF at different view zenith angles

Download full size

Fig. 6. Comparison of theoretical reference reflectance and observed reflectance for DPC in-flight cross calibration. (a) 443 nm band; (b) 490 nm band; (c) 565 nm band; (d) 670 nm band; (e) 865 nm band

Download full size

Table 1. Comparison of satellite orbit and sensor parameters between MODIS/Aqua and DPC/GaoFen-5

View table

Table 1. Comparison of satellite orbit and sensor parameters between MODIS/Aqua and DPC/GaoFen-5

Instrument	MODIS/Aqua	DPC/GaoFen-5
Orbit	Sun-synchronous	Sun-synchronous
Passing time	13：30	13：30
Altitude /km	705	705
Scanning mode	Whisk broom	Frame imaging
Band /µm	0.4-15.0	0.443-0.91
Field of view /（°）	±49.5	±50
Swath width /km	2330	1850
Spatial resolution /m	250/500/1000	3300
Radiative calibration uncertainty /%	2	5
Number of angles	1	≥9

Table 2. Uncertainty analysis of cross calibration method in this research

View table

Table 2. Uncertainty analysis of cross calibration method in this research

Uncertainty source	Reference	Input uncertainty	Total uncertainty /%
Uncertainty source	Reference	Input uncertainty	443 nm	490 nm	565 nm	670 nm	865 nm
Reference sensor calibration	—	—	2.00	2.00	2.00	2.00	2.00
Surface reflectance	BRDF	Surface directional reflectance	1.42	0.67	2.3	2.92	1.09
Aerosol model	Desert	Urban	0.42	0.57	0.45	0.36	0.5
AOD	0.1-0.4 with step of 0.1	±0.05±0.15	0.21	0.20	0.17	0.11	0.07
Radiative transfer model	—	—	1.00	1.00	1.00	1.00	1.00
Total uncertainty	—	—	2.69	2.41	3.24	3.70	2.54

Table 3. Cross radiometric calibration coefficients and standard deviation of calibration samples $A_{k}^{'}$ of DPC/GaoFen-5 and MODIS/Aqua
View table
Table 3. Cross radiometric calibration coefficients and standard deviation of calibration samples $A_{k}^{'}$ of DPC/GaoFen-5 and MODIS/Aqua
Band 443 nm 490 nm 565 nm 670 nm 865 nm
$A_{k}^{'}$ 0.975 1.010 1.040 1.000 0.965
$σ$ 0.0183 0.0225 0.0137 0.0108 0.0080

Tools

Get Citation

Copy Citation Text

Sifeng Zhu, Lili Qie, Hua Xu, Yanqing Xie, Zhengqiang Li, Yisong Xie, Bangyu Ge, Kaitao Li. In-Flight Cross Radiometric Calibration of DPC/GaoFen-5 and MODIS/Aqua[J]. Acta Optica Sinica, 2022, 42(18): 1828008

Download Citation

EndNote(RIS)BibTex Plain Text

Set citation alerts for article

Save article for my favorites

Paper Information

Category: Remote Sensing and Sensors

Received: Jan. 26, 2022

Accepted: May. 5, 2022

Published Online: Sep. 15, 2022

The Author Email: Qie Lili (qiell@radi.ac.cn), Li Zhengqiang (lizq@radi.ac.cn)

DOI:10.3788/AOS202242.1828008

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology

Table 1. Comparison of satellite orbit and sensor parameters between MODIS/Aqua and DPC/GaoFen-5

Table 1. Comparison of satellite orbit and sensor parameters between MODIS/Aqua and DPC/GaoFen-5

Table 2. Uncertainty analysis of cross calibration method in this research

Table 2. Uncertainty analysis of cross calibration method in this research

Table 3. Cross radiometric calibration coefficients and standard deviation of calibration samples Ak' of DPC/GaoFen-5 and MODIS/Aqua

Table 3. Cross radiometric calibration coefficients and standard deviation of calibration samples Ak' of DPC/GaoFen-5 and MODIS/Aqua

Table 3. Cross radiometric calibration coefficients and standard deviation of calibration samples $A_{k}^{'}$ of DPC/GaoFen-5 and MODIS/Aqua

Table 3. Cross radiometric calibration coefficients and standard deviation of calibration samples $A_{k}^{'}$ of DPC/GaoFen-5 and MODIS/Aqua