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A Perspective on the Performance of the CFOSAT Rotating Fan-Beam Scatterometer

AuthorsLin, Wenming ; Dong, Xiao-long; Portabella, Marcos ; Lang, Shuyan; He, Yijun; Yun, Risheng; Wang, Zhixiong; Xu, Xing-ou; Zhu, Di; Liu, Jianqiang
Issue DateFeb-2019
PublisherInstitute of Electrical and Electronics Engineers
CitationIEEE Transactions on Geoscience and Remote Sensing 57(2): 627-639 (2019)
AbstractThe China-France Oceanography Satellite (CFOSAT) to be launched in October 2018 will carry two innovative payloads, i.e., the surface wave investigation and monitoring instrument and the rotating fan-beam scatterometer [CFOSAT scatterometer (CFOSCAT)]. Both instruments, operated in Ku-band microwave frequency, are dedicated to the measurement of sea surface wave spectra and wind vectors, respectively. This paper provides an overview of the system definition and characteristics of the CFOSCAT instrument. A prelaunch analysis is carried out to estimate the scatterometer backscatter and wind quality based on the developed CFOSCAT simulator prototype. The overall simulation includes two parts: first, a forward model is developed to simulate the ocean backscatter signals, accounting for both instrument and geophysical noise. Second, a wind inversion processor is used to retrieve wind vectors from the outputs of the forward model. The benefits and challenges of the novel observing geometries are addressed in terms of the CFOSCAT wind retrieval. The simulations show that the backscatter accuracy and the retrieved wind quality of CFOSCAT are quite promising and meet the CFOSAT mission requirements
Description13 pages. 10 figures. 2 tables
Publisher version (URL)https://dx.doi.org/10.1109/TGRS.2018.2858852
Identifiersdoi: 10.1109/TGRS.2018.2858852
issn: 0196-2892
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