NSSC OpenIR  > 微波遥感部
Development of the Reconstructive Transponder for In-Orbit Calibration of HY-2A Altimeter
Wang, Caiyun; Guo, Wei; Zhao, Fei; Wan, Junzhi; Liu, Peng; Lin, Mingsen; Peng, Hailong; Xu, Chuan; Wang, CY (reprint author), Chinese Acad Sci, Natl Space Sci Ctr, Beijing 100190, Peoples R China.
Department微波遥感部
Source PublicationIEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING
2016
Pages2709-2719
Language英语
ISSN1939-1404
AbstractChina's first ocean dynamic satellite HY-2A was launched in August 2011 which carries a dual-frequency (Ku- and C-band) altimeter to measure the global mean sea level. In-orbit calibration is essential for reliably measuring sea-surface height (SSH). This paper concerns a novel approach for HY-2A altimeter in-orbit calibration using a reconstructive transponder, which is different from the existing bent-pipe transponder. The reconstructive transponder captures, tracks, and records the altimeter's pulses, then reconstructs the pulses, and transmits them back to the altimeter. It is carried on a SUV, reduces requirement for a permanent installation site, and is much more flexible and efficient. There is an internal calibration loop to enable the stability of the transponder electronics delay and the system gain. The transponder electronics delay and system gain are obtained through an overall measurement. Another benefit of the signal reconstructive transponder is to accurately estimate the altimeter clock frequency drift. HY-2A altimeter in-orbit calibration campaign started from March 2012, until now more than 70 experiments have been carried out at several sites. On March 31, 2013, HY-2A altimeter side-A failed owing to malfunction of its ultrastable oscillator (USO). And this abnormality is monitored by the transponder. From the successful experiments, HY-2A altimeter side-A and side-B instrument bias are obtained with 1- and 4-cm precisions separately. The USO frequency drifts of the HY-2A altimeter are monitored all through the calibration campaign.
KeywordCalibration Frequency Estimation Hy-2a Altimeter Signal Reconstructive Transponder
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/122/5564
Collection微波遥感部
Corresponding AuthorWang, CY (reprint author), Chinese Acad Sci, Natl Space Sci Ctr, Beijing 100190, Peoples R China.
Recommended Citation
GB/T 7714
Wang, Caiyun,Guo, Wei,Zhao, Fei,et al. Development of the Reconstructive Transponder for In-Orbit Calibration of HY-2A Altimeter[C]:IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC,2016:2709-2719.
Files in This Item:
File Name/Size DocType Version Access License
201607326612.pdf(2168KB)会议论文 开放获取CC BY-NC-SAApplication Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Wang, Caiyun]'s Articles
[Guo, Wei]'s Articles
[Zhao, Fei]'s Articles
Baidu academic
Similar articles in Baidu academic
[Wang, Caiyun]'s Articles
[Guo, Wei]'s Articles
[Zhao, Fei]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Wang, Caiyun]'s Articles
[Guo, Wei]'s Articles
[Zhao, Fei]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.