Effect of random phase error and baseline roll angle error on eddy identification by interferometric imaging altimeter
文献类型：CNKI期刊论文
| 作者 | Le GAO; Hanwei SUN; Jifeng QI; Qiufu JIANG
|
| 发表日期 | 2022-09-15 |
| 出处 | Journal of Oceanology and Limnology
 |
| 关键词 | interferometric altimetry baseline error random error ocean eddy theoretical and systematic simulation error removal strategy |
| 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. |
| 文献子类 | CNKI期刊论文 |
| 资助机构 | Supported by the National Key R&D Program of China (No. 2016YFC1401008) ; the Key R&D Program of Shandong Province,China (No. 2019GHY112055) ; the National Natural Science Foundation of China (Nos. U2006211, 42090044, 41606200, 41776183, 41906157) ; the Major Scientifi c and Technological Innovation Projects in Shandong Province (No. 2019JZZY010102) ; the Strategic Priority Research Program of the Chinese Academy of Sciences (Nos. XDA19060101, XDB42000000) ; the Key Project of Center for Ocean Mega-Science,Chinese Academy of Sciences (No. COMS2019R02) ; the CAS (Chinese Academy of Sciences) 100-Talent Program (No. Y9KY04101L) ; the Marine S&T Fund of Shandong Province for Pilot National Laboratory for Marine Science and Technology (Qingdao)(No. 2018SDKJ0102-2) ; the Fundamental Research Funds for the Central Universities (Hohai University)(No. 2018B41814) |
| 卷 | v.40期:05页:191-198 |
| 语种 | 英文; |
| 分类号 | P715.6 |
| ISSN号 | 2096-5508 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/187333]  |
| 专题 | 中国科学院海洋研究所 |
| 作者单位 | 1.CASKeyLaboratoryofOceanCirculationandWaves,InstituteofOceanology,ChineseAcademyofSciencesandCenterforOceanMega-Science,ChineseAcademyofSciences 2.BeijingRadioMeasurementInstitute 3.PilotNationalLaboratoryforMarineScienceandTechnology(Qingdao) |
| 推荐引用方式 GB/T 7714 | Le GAO,Hanwei SUN,Jifeng QI,et al. Effect of random phase error and baseline roll angle error on eddy identification by interferometric imaging altimeter. 2022. |
入库方式： OAI收割
来源：海洋研究所
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