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HY-2A Altimeter Time Tag Bias Estimation Using Reconstructive Transponder
Wan, Junzhi; Guo, Wei; Zhao, Fei; Wang, Caiyun; Wan, JZ (reprint author), Chinese Acad Sci, Ctr Space Sci & Appl Res, Natl Space Sci Ctr, Key Lab Microwave Remote Sensing, Beijing 100190, Peoples R China.
Department微波遥感部
Source PublicationIEEE GEOSCIENCE AND REMOTE SENSING LETTERS
2015
Volume12Issue:7Pages:1431-1435
ISSN1545-598X
Language英语
KeywordAltimeter Calibration Time Tag Bias Transponder
AbstractIndependent clocks provide time tags for the precision orbit determination (POD) equipment and the radar altimeter onboard the HY-2A satellite, and a bias between POD data' time tag and corresponding range observation's time tag from the HY-2A altimeter exists. The time tag bias contributes a bias in the sea surface height observation due to the nonzero time rate of change of the HY-2A altimeter's height. A transponder for in-orbit radar altimeter calibration provides an approach to estimate the time tag bias. The altimeter receives the responding signals from the transponder and generates ranges. Pertinent reference ranges are obtained fromthe POD data and the transponder's coordinate. Using the ranges from the radar altimeter and the reference ranges, the time tag bias between the POD data and the altimeter observations can be estimated. During an in situ HY-2A altimeter calibration campaign using a reconstructive transponder from August 9, 2012, to July 20, 2014, 17 estimations of the altimeter's time tag bias were obtained. The preliminary results are presented in this letter.
Indexed BySCI ; EI
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/4618
Collection微波遥感部
Corresponding AuthorWan, JZ (reprint author), Chinese Acad Sci, Ctr Space Sci & Appl Res, Natl Space Sci Ctr, Key Lab Microwave Remote Sensing, Beijing 100190, Peoples R China.
Recommended Citation
GB/T 7714
Wan, Junzhi,Guo, Wei,Zhao, Fei,et al. HY-2A Altimeter Time Tag Bias Estimation Using Reconstructive Transponder[J]. IEEE GEOSCIENCE AND REMOTE SENSING LETTERS,2015,12(7):1431-1435.
APA Wan, Junzhi,Guo, Wei,Zhao, Fei,Wang, Caiyun,&Wan, JZ .(2015).HY-2A Altimeter Time Tag Bias Estimation Using Reconstructive Transponder.IEEE GEOSCIENCE AND REMOTE SENSING LETTERS,12(7),1431-1435.
MLA Wan, Junzhi,et al."HY-2A Altimeter Time Tag Bias Estimation Using Reconstructive Transponder".IEEE GEOSCIENCE AND REMOTE SENSING LETTERS 12.7(2015):1431-1435.
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