GF-3 SAR Ocean Wind Retrieval: The First View and Preliminary Assessment | |
Wang, He1; Yang, Jingsong2; Mouche, Alexis3; Shao, Weizeng4; Zhu, Jianhua1; Ren, Lin2; Xie, Chunhua5 | |
刊名 | REMOTE SENSING |
2017-07 | |
卷号 | 9期号:7 |
关键词 | GF-3 synthetic aperture radar (SAR) ocean surface wind validation |
ISSN号 | 2072-4292 |
DOI | 10.3390/rs9070694 |
英文摘要 | Gaofen-3 (GF-3) is the first Chinese civil C-band synthetic aperture radar (SAR) launched on 10 August 2016 by the China Academy of Space Technology (CAST), which operates in 12 imaging modes with a fine spatial resolution up to 1 m. As one of the primary users, the State Oceanic Administration (SOA) operationally processes GF-3 SAR Level-1 products into ocean surface wind vector and plans to officially release the near real-time SAR wind products in the near future. In this paper, the methodology of wind retrieval at C-band SAR is introduced and the first results of GF-3 SAR-derived winds are presented. In particular, the case of the coastal katabatic wind off the west coast of the U.S. captured by GF-3 is discussed. The preliminary accuracy assessment of wind speed and direction retrievals from GF-3 SAR is carried out against in situ measurements from National Data Buoy Center (NDBC) buoy measurements of National Oceanic and Atmospheric Administration (NOAA). Only the buoys located inside the GF-3 SAR wind cell (1 km) were considered as co-located in space, while the time interval between observations of SAR and buoy was limited to less the 30 min. These criteria yielded 56 co-locations during the period from January to April 2017, showing the Root Mean Square Error (RMSE) of 2.46 m/s and 22.22 degrees for wind speed and direction, respectively. Different performances due to geophysical model function (GMF) and Polarization Ratio (PR) are discussed. The preliminary results indicate that GF-3 wind retrievals are encouraging for operational implementation. |
资助项目 | Dragon-4 project[32249] |
WOS研究方向 | Remote Sensing |
语种 | 英语 |
出版者 | MDPI AG |
WOS记录号 | WOS:000406676800057 |
内容类型 | 期刊论文 |
源URL | [http://ir.fio.com.cn/handle/2SI8HI0U/3142] |
专题 | 自然资源部第一海洋研究所 |
作者单位 | 1.State Ocean Adm, Natl Ocean Technol Ctr, Tianjin 300112, Peoples R China; 2.State Ocean Adm, Inst Oceanog 1, State Key Lab Satellite Ocean Environm Dynam, Hangzhou 310012, Zhejiang, Peoples R China; 3.IFREMER, Lab Oceanog Phys & Spatiale, F-29280 Plouzane, France; 4.Zhejiang Ocean Univ, Marine Acoust & Remote Sensing Lab, Zhoushan 316000, Peoples R China; 5.State Ocean Adm, Natl Satellite Ocean Applicat Serv, Beijing 100081, Peoples R China |
推荐引用方式 GB/T 7714 | Wang, He,Yang, Jingsong,Mouche, Alexis,et al. GF-3 SAR Ocean Wind Retrieval: The First View and Preliminary Assessment[J]. REMOTE SENSING,2017,9(7). |
APA | Wang, He.,Yang, Jingsong.,Mouche, Alexis.,Shao, Weizeng.,Zhu, Jianhua.,...&Xie, Chunhua.(2017).GF-3 SAR Ocean Wind Retrieval: The First View and Preliminary Assessment.REMOTE SENSING,9(7). |
MLA | Wang, He,et al."GF-3 SAR Ocean Wind Retrieval: The First View and Preliminary Assessment".REMOTE SENSING 9.7(2017). |
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