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Calibration and Validation of Feng Yun-3-D Microwave Humidity Sounder II
Alternative TitleWOS:000583714200001;20204609480190
Guo, Yang; He, Jieying1; Gu, Songyan2; Lu, Naimeng
Source PublicationIEEE GEOSCIENCE AND REMOTE SENSING LETTERS
2020
Volume17Issue:11Pages:1846-1850
DOI10.1109/LGRS.2019.2957403
ISSN1545-598X
Language英语
KeywordCalibration Instruments Aerospace electronics Microwave radiometry Temperature sensors Satellite broadcasting Temperature measurement Calibration Feng Yun-3D (FY-3D) second-generation Microwave Humidity Sounder (MWHS II) validation PRELAUNCH FY-3C
AbstractOn November 15, 2017, the fourth satellite, Feng Yun-3D (FY-3D), of the new generation of Chinese polar orbit meteorological satellites was successfully launched into orbit. As one of the key payloads, the second-generation Microwave Humidity Sounder (MWHS II) has 15 channels for observing atmospheric temperature and moisture. In the ground data processing system, the calibration is completed for every scanning period, and then, brightness temperature (TB) data are obtained with calibration coefficients. In order to analyze the performance of MWHS II, one year of in-orbit data are used to monitor the trend of internal blackbody target temperature, instrument temperature, calibration counts, and automatic gain control (AGC), and the results indicate whether the instrument is working well. The instrument noise equivalent differential temperature (NEDT) is calculated, and the value satisfies the design requirements. Two methods are used to validate FY-3D MWHS II measurements. One is the simultaneous nadir overpass (SNO) approach: in this method, ATMS is chosen as the reference sensor, and the standard deviations for five humidity sounding channels are all less than 1.3 K. In the alternate approach, a comparison of the observed and simulated TB of MWHS II is carried out between FY-3C and FY-3D. The results also demonstrate a consistent performance between the two instruments.
Indexed BySCI ; EI
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Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/7660
Collection中国科学院国家空间科学中心
Affiliation1.CMA, Satellite Meteorol Inst, Natl Satellite Meteorol Ctr, Beijing 100081, Peoples R China
2.Chinese Acad Sci, Natl Space Sci Ctr, Key Lab Remote Sensing, Beijing 100190, Peoples R China
3.China Meteorol Adm, Natl Satellite Meteorol Ctr, Off Syst Dev, Beijing 100081, Peoples R China
Recommended Citation
GB/T 7714
Guo, Yang,He, Jieying,Gu, Songyan,et al. Calibration and Validation of Feng Yun-3-D Microwave Humidity Sounder II[J]. IEEE GEOSCIENCE AND REMOTE SENSING LETTERS,2020,17(11):1846-1850.
APA Guo, Yang,He, Jieying,Gu, Songyan,&Lu, Naimeng.(2020).Calibration and Validation of Feng Yun-3-D Microwave Humidity Sounder II.IEEE GEOSCIENCE AND REMOTE SENSING LETTERS,17(11),1846-1850.
MLA Guo, Yang,et al."Calibration and Validation of Feng Yun-3-D Microwave Humidity Sounder II".IEEE GEOSCIENCE AND REMOTE SENSING LETTERS 17.11(2020):1846-1850.
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