Effect of random phase error and baseline roll angle error on eddy identification by interferometric imaging altimeter

doi:10.1007/s00343-020-0044-3

CORC > 海洋研究所 > 中国科学院海洋研究所 > 海洋环流与波动重点实验室

	Effect of random phase error and baseline roll angle error on eddy identification by interferometric imaging altimeter
	Gao, Le 1,2,4; Sun, Hanwei 3; Qi, Jifeng 2,4; Jiang, Qiufu 2,4
刊名	JOURNAL OF OCEANOLOGY AND LIMNOLOGY
	2021-04-10
页码	8
关键词	interferometric altimetry baseline error random error ocean eddy theoretical and systematic simulation error removal strategy
ISSN号	2096-5508
DOI	10.1007/s00343-020-0044-3
通讯作者	Sun, Hanwei(sunhw12@tsinghua.org.cn)
英文摘要	To achieve better observation for sea surface, a new generation of wide-swath interferometric altimeter satellites is proposed. Before satellite launch, it is particularly important to study the data processing methods and carry out the detailed error analysis of ocean satellites, because it is directly related to the ultimate ability of satellites to capture ocean information. For this purpose, ocean eddies are considered a specific case of ocean signals, and it can cause significant changes in sea surface elevation. It is suitable for theoretical simulation of the sea surface and systematic simulation of the altimeter. We analyzed the impacts of random error and baseline error on the sea surface and ocean signals and proposed a combined strategy of low-pass filtering, empirical orthogonal function (EOF) decomposition, and linear fitting to remove the errors. Through this strategy, sea surface anomalies caused by errors were considerably improved, and the capability of satellite for capturing ocean information was enhanced. Notably, we found that the baseline error in sea surface height data was likely to cause inaccuracy in eddy boundary detection, as well as false eddy detection. These abnormalities could be prevented for "clean" sea surface height after the errors removal.
资助项目	National Key R&D Program of China[2016YFC1401008] ; Key R&D Program of Shandong Province, China[2019GHY112055] ; National Natural Science Foundation of China[U2006211] ; National Natural Science Foundation of China[42090044] ; National Natural Science Foundation of China[41606200] ; National Natural Science Foundation of China[41776183] ; National Natural Science Foundation of China[41906157] ; Major Scientific and Technological Innovation Projects in Shandong Province[2019JZZY010102] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA19060101] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB42000000] ; Key Project of Center for Ocean Mega-Science, Chinese Academy of Sciences[COMS2019R02] ; CAS (Chinese Academy of Sciences) 100-Talent Program[Y9KY04101L] ; Marine S&T Fund of Shandong Province for Pilot National Laboratory for Marine Science and Technology (Qingdao)[2018SDKJ0102-2] ; Fundamental Research Funds for the Central Universities (Hohai University)[2018B41814]
WOS研究方向	Marine & Freshwater Biology ; Oceanography
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000638562900002
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/170534]
专题	海洋研究所_海洋环流与波动重点实验室
通讯作者	Sun, Hanwei
作者单位	1.Pilot Natl Lab Marine Sci & Technol Qingdao, Qingdao 266237, Peoples R China 2.Chinese Acad Sci, CAS Key Lab Ocean Circulat & Waves, Inst Oceanol, Qingdao 266071, Peoples R China 3.Beijing Radio Measurement Inst, Beijing 100854, Peoples R China 4.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao 266071, Peoples R China
推荐引用方式 GB/T 7714	Gao, Le,Sun, Hanwei,Qi, Jifeng,et al. Effect of random phase error and baseline roll angle error on eddy identification by interferometric imaging altimeter[J]. JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2021:8.
APA	Gao, Le,Sun, Hanwei,Qi, Jifeng,&Jiang, Qiufu.(2021).Effect of random phase error and baseline roll angle error on eddy identification by interferometric imaging altimeter.JOURNAL OF OCEANOLOGY AND LIMNOLOGY,8.
MLA	Gao, Le,et al."Effect of random phase error and baseline roll angle error on eddy identification by interferometric imaging altimeter".JOURNAL OF OCEANOLOGY AND LIMNOLOGY (2021):8.