Retrieval of sea surface winds under hurricane conditions from GNSS-R observations

	Retrieval of sea surface winds under hurricane conditions from GNSS-R observations
	Jing Cheng 1; Yang Xiaofeng 1; Ma Wentao 1; Yu Yang 1; Dong Di 1; Li Ziwei 1; Xu Cong 1
刊名	ACTA OCEANOLOGICA SINICA
	2016
卷号	35 期号:9 页码:91-97
关键词	OPEN WATER FEATURES INDEX NDWI IMAGERY SEA
通讯作者	Yang, XF (reprint author), Chinese Acad Sci, Inst Remote Sensing & Digital Earth, State Key Lab Remote Sensing Sci, Beijing 100101, Peoples R China.
英文摘要	Reflected signals from global navigation satellite systems (GNSSs) have been widely acknowledged as an important remote sensing tool for retrieving sea surface wind speeds. The power of GNSS reflectometry (GNSS-R) signals can be mapped in delay chips and Doppler frequency space to generate delay Doppler power maps (DDMs), whose characteristics are related to sea surface roughness and can be used to retrieve wind speeds. However, the bistatic radar cross section (BRCS), which is strongly related to the sea surface roughness, is extensively used in radar. Therefore, a bistatic radar cross section (BRCS) map with a modified BRCS equation in a GNSS-R application is introduced. On the BRCS map, three observables are proposed to represent the sea surface roughness to establish a relationship with the sea surface wind speed. Airborne Hurricane Dennis (2005) GNSS-R data are then used. More than 16 000 BRCS maps are generated to establish GMFs of the three observables. Finally, the proposed model and classic one-dimensional delay waveform (DW) matching methods are compared, and the proposed model demonstrates a better performance for the high wind speed retrievals.
学科主题	Oceanography
类目[WOS]	Oceanography
收录类别	SCI
语种	英语
WOS记录号	WOS:000383924200012
内容类型	期刊论文
源URL	[http://ir.radi.ac.cn/handle/183411/39397]
专题	遥感与数字地球研究所_SCI/EI期刊论文_期刊论文
作者单位	1.Chinese Acad Sci, Inst Remote Sensing & Digital Earth, State Key Lab Remote Sensing Sci, Beijing 100101, Peoples R China 2.Chinese Acad Sci, Inst Remote Sensing & Digital Earth, Natl Engn Ctr Geoinformat, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Jing Cheng,Yang Xiaofeng,Ma Wentao,et al. Retrieval of sea surface winds under hurricane conditions from GNSS-R observations[J]. ACTA OCEANOLOGICA SINICA,2016,35(9):91-97.
APA	Jing Cheng.,Yang Xiaofeng.,Ma Wentao.,Yu Yang.,Dong Di.,...&Xu Cong.(2016).Retrieval of sea surface winds under hurricane conditions from GNSS-R observations.ACTA OCEANOLOGICA SINICA,35(9),91-97.
MLA	Jing Cheng,et al."Retrieval of sea surface winds under hurricane conditions from GNSS-R observations".ACTA OCEANOLOGICA SINICA 35.9(2016):91-97.