Pre-Launch Radiometric Characterization of EMI-2 on the GaoFen-5 Series of Satellites | |
Zhao, Minjie1; Si, Fuqi1; Zhou, Haijin1; Jiang, Yu1; Ji, Chunyan1,2; Wang, Shimei1; Zhan, Kai1; Liu, Wenqing1 | |
刊名 | REMOTE SENSING |
2021-07-01 | |
卷号 | 13 |
关键词 | EMI-2 GaoFen-5 pre-launch radiometric calibration instrument BSDF |
DOI | 10.3390/rs13142843 |
通讯作者 | Si, Fuqi(sifuqi@aiofm.ac.cn) |
英文摘要 | The environmental trace gas monitoring instrument (EMI) is a space-borne imaging spectrometer onboard GaoFen-5, which was launched in May 2018, covering wavelengths in the range of 240-710 nm to measure NO2, O-3, HCHO, and SO2. An advanced EMI-2 instrument with a higher spatial resolution and sufficient signal-to-noise is currently planned for launch on the GaoFen-5(02) satellite in 2021. The EMI-2 instrument bidirectional scattering distribution function (BSDF) is obtained from the absolute irradiance and radiance calibration on-ground. Based on EMI-2 earth and sun optical paths, the key factors of BSDF parameters are introduced. An NIST-calibrated 1000 W FEL quartz tungsten halogen lamp and a 2D turntable are adopted for the absolute irradiance calibration. A large aperture integrating sphere system is used for the absolute radiance calibration. Based on absolute irradiance and radiance calibration functions, the BSDF parameters are obtained, with accuracy of 4.9% for UV1, 4.3% for UV2, 4.1% for VIS1, and 4.2% for VIS2. The on-ground measurement results show that the reflectance spectrum can be calculated from BSDF parameters. On-orbit application of the EMI-2 instrument BSDF are also discussed. |
资助项目 | National Natural Science Foundation of China[41705016] |
WOS关键词 | GASES MONITORING INSTRUMENT ; SENTINEL-5 PRECURSOR ; CALIBRATION ; TROPOMI |
WOS研究方向 | Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology |
语种 | 英语 |
出版者 | MDPI |
WOS记录号 | WOS:000676904200001 |
资助机构 | National Natural Science Foundation of China |
内容类型 | 期刊论文 |
源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/123227] |
专题 | 中国科学院合肥物质科学研究院 |
通讯作者 | Si, Fuqi |
作者单位 | 1.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Key Lab Environm Opt & Technol, Hefei 230031, Peoples R China 2.Univ Sci & Technol China, Hefei 230026, Peoples R China |
推荐引用方式 GB/T 7714 | Zhao, Minjie,Si, Fuqi,Zhou, Haijin,et al. Pre-Launch Radiometric Characterization of EMI-2 on the GaoFen-5 Series of Satellites[J]. REMOTE SENSING,2021,13. |
APA | Zhao, Minjie.,Si, Fuqi.,Zhou, Haijin.,Jiang, Yu.,Ji, Chunyan.,...&Liu, Wenqing.(2021).Pre-Launch Radiometric Characterization of EMI-2 on the GaoFen-5 Series of Satellites.REMOTE SENSING,13. |
MLA | Zhao, Minjie,et al."Pre-Launch Radiometric Characterization of EMI-2 on the GaoFen-5 Series of Satellites".REMOTE SENSING 13(2021). |
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