NSSC OpenIR
Preliminary Evaluation and Correction of Sea Surface Height from Chinese Tiangong-2 Interferometric Imaging Radar Altimeter
Alternative TitleWOS:000559573100001;20203509108630
Ren, Lin; Yang, Jingsong2; Dong, Xiao1; Zhang, Yunhua1; Jia, Yongjun3
Source PublicationREMOTE SENSING
2020
Volume12Issue:15Pages:2496
DOI10.3390/rs12152496
Language英语
KeywordTiangong-2 Interferometric Imaging Radar Altimeter (InIRA) sea surface height (SSH) evaluation correction OCEAN HY-2A PERFORMANCE CALIBRATION ACCURACY LEVEL MODEL
AbstractIn this study, we performed preliminary comparative evaluation and correction of two-dimensional sea surface height (SSH) data from the Chinese Tiangong-2 Interferometric Imaging Radar Altimeter (InIRA) with the goal of advancing its retrieval. Data from the InIRA were compared with one-dimensional SSH data from the traditional altimeters Jason-2, Saral/AltiKa, and Jason-3. Because the sea state bias (SSB) of distributed InIRA data has not yet been considered, consistency was maintained by neglecting the SSB for the traditional altimeters. The results of the comparisons show that the InIRA captures the same SSH trends as those obtained by traditional altimeters. However, there is a significant deviation between InIRA and traditional altimeter SSHs; consequently, systematic and parametric biases were analyzed. The parametric bias was found to be related to the incidence angles and a significant wave height. Upon correcting the two biases, the standard deviation significantly reduced to 8.1 cm. This value is slightly higher than those of traditional altimeters, which typically have a bias of similar to 7.0 cm. The results indicate that the InIRA is promising in providing a wide swath of SSH measurements. Moreover, we recommend that the InIRA retrieval algorithm should consider the two biases to improve SSH accuracy.
Indexed BySCI ; EI
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Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/7704
Collection中国科学院国家空间科学中心
Affiliation1.Minist Nat Resources, State Key Lab Satellite Ocean Environm Dynam, Inst Oceanog 2, Hangzhou 310012, Peoples R China
2.Chinese Acad Sci, Natl Space Sci Ctr, Beijing 100190, Peoples R China
3.Shanghai Jiao Tong Univ, Sch Oceanog, Shanghai 200030, Peoples R China
4.Minist Nat Resources, Natl Satellite Ocean Applicat Serv, Beijing 100081, Peoples R China
Recommended Citation
GB/T 7714
Ren, Lin,Yang, Jingsong,Dong, Xiao,et al. Preliminary Evaluation and Correction of Sea Surface Height from Chinese Tiangong-2 Interferometric Imaging Radar Altimeter[J]. REMOTE SENSING,2020,12(15):2496.
APA Ren, Lin,Yang, Jingsong,Dong, Xiao,Zhang, Yunhua,&Jia, Yongjun.(2020).Preliminary Evaluation and Correction of Sea Surface Height from Chinese Tiangong-2 Interferometric Imaging Radar Altimeter.REMOTE SENSING,12(15),2496.
MLA Ren, Lin,et al."Preliminary Evaluation and Correction of Sea Surface Height from Chinese Tiangong-2 Interferometric Imaging Radar Altimeter".REMOTE SENSING 12.15(2020):2496.
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