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ECHO SIGNAL QUALITY ANALYSIS DURING HY-2A RADAR ALTIMETER CALIBRATION CAMPAIGN USING RECONSTRUCTIVE TRANSPONDER
Wan, Junzhi; Guo, Wei; Zhao, Fei; Wang, Caiyun; Zhao, F (reprint author), Chinese Acad Sci, Ctr Space Sci & Appl Res, Natl Space Sci Ctr, Key Lab Microwave & Remote Sensing Technol, Beijing 100190, Peoples R China.
Department微波遥感部
Source Publication2015 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM (IGARSS)
2015
Pages3652-3654
Language英语
ISSN2153-6996
ISBN978-1-4799-7929-5
AbstractA reconstructive transponder has been utilized for the in orbit calibration campaign of the HY-2A radar altimeter since March, 2012. The precision of final calibration result is influenced by echo signal's quality in the HY-2A altimeter's range window. Echo signal dwell time is analyzed considering its influence on signal quality and its fluctuation. Comparing with the length of the HY-2A altimeter's range window, the radial component of orbit prediction error is large. The tracking mechanism of the reconstructive transponder utilizes some incoming signal samples without sending echo signals to establish stable tracking. Large radial orbit error and tracking mechanism of the reconstructive transponder are two main factors that limit the precision of the final range calibration result. Finally, approaches for increasing echo signal dwell time are proposed.
KeywordAltimeter Reconstructive Transponder Dwell Time Signal Quality
Conference NameIEEE International Geoscience and Remote Sensing Symposium (IGARSS)
Conference DateJUL 26-31, 2015
Conference PlaceMilan, ITALY
Indexed ByEI ; CPCI
Document Type会议论文
Identifierhttp://ir.nssc.ac.cn/handle/122/5366
Collection微波遥感部
Corresponding AuthorZhao, F (reprint author), Chinese Acad Sci, Ctr Space Sci & Appl Res, Natl Space Sci Ctr, Key Lab Microwave & Remote Sensing Technol, Beijing 100190, Peoples R China.
Recommended Citation
GB/T 7714
Wan, Junzhi,Guo, Wei,Zhao, Fei,et al. ECHO SIGNAL QUALITY ANALYSIS DURING HY-2A RADAR ALTIMETER CALIBRATION CAMPAIGN USING RECONSTRUCTIVE TRANSPONDER[C],2015:3652-3654.
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