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First Results From the Rotating Fan Beam Scatterometer Onboard CFOSAT
Alternative TitleWOS:000594389800041
Liu, Jianqiang; Lin, Wenming1; Dong, Xiaolong2,3; Lang, Shuyan; Yun, Risheng2; Zhu, Di2; Zhang, Kuo2; Sun, Congrong; Mu, Bo; Ma, Jianying2; He, Yijun1; Wang, Zhixiong1; Li, Xiuzhong1; Zhao, Xiaokang1; Jiang, Xingwei
Source PublicationIEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
2020
Volume58Issue:12Pages:8793-8806
DOI10.1109/TGRS.2020.2990708
ISSN0196-2892
Language英语
KeywordBackscatter calibration inversion scatterometer wind quality APERTURE RADAR WIND ASCAT CALIBRATION VALIDATION OCEAN DESIGN
AbstractThe first rotating fan beam scatterometer onboard China-France Oceanography Satellite (CFOSAT) was successfully launched on October 29, 2018. CFOSAT SCATterometer (CSCAT) is dedicated to the monitoring of sea surface wind vectors but also provides valuable data for the applications over land and Polar Regions. This article provides an overview of the relevant procedures of CSCAT data processing, including onboard signal processing and operational ground processing. Then a post-launch analysis is carried out to evaluate the first results of CSCAT L1 and L2 products. It shows that the CSCAT instrument is generally stable in terms of noise measurements and internal calibration, unless there is any important change in the system configuration. Specifically, the CSCAT backscatter (sigma(0)) precision and wind quality are studied using a set of collocated ancillary data. The sigma(0) precision degrades as wind speed decreases, and it is relatively low at high incidence angles (e.g., theta > 46 degrees). In particular, backscatter estimation of the horizontally polarized beam should be further improved by correcting the noise subtraction factor. The retrieved CSCAT winds are in good agreement with the European Centre for Medium Range Weather Forecasts (ECMWF) winds, the Advanced Scatterometer (ASCAT) winds, as well as the buoy winds. However, due to unresolved calibration and interbeam consistency problems, the wind quality degrades remarkably for the out-swath and the nadir-region wind vector cells, implying that the sigma(0) calibration should be improved in the future updates.
Indexed BySCI
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Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/7552
Collection中国科学院国家空间科学中心
Affiliation1.Natl Satellite Ocean Applicat Serv NSOAS, Beijing 100081, Peoples R China
2.Nanjing Univ Informat Sci & Technol, Sch Marine Sci, Nanjing 210044, Peoples R China
3.Chinese Acad Sci, Natl Space Sci Ctr, CAS Key Lab Microwave Remote Sensing, Beijing 100190, Peoples R China
4.Univ Chinese Acad Sci, Sch Elect Elect & Commun Engn, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Liu, Jianqiang,Lin, Wenming,Dong, Xiaolong,et al. First Results From the Rotating Fan Beam Scatterometer Onboard CFOSAT[J]. IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING,2020,58(12):8793-8806.
APA Liu, Jianqiang.,Lin, Wenming.,Dong, Xiaolong.,Lang, Shuyan.,Yun, Risheng.,...&Jiang, Xingwei.(2020).First Results From the Rotating Fan Beam Scatterometer Onboard CFOSAT.IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING,58(12),8793-8806.
MLA Liu, Jianqiang,et al."First Results From the Rotating Fan Beam Scatterometer Onboard CFOSAT".IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING 58.12(2020):8793-8806.
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