HY-2A Radar Altimeter Ultrastable Oscillator Drift Estimation Using Reconstructive Transponder With Its Validation By Multimission Cross Calibration
文献类型：期刊论文
| 作者 | Wan, Junzhi; Guo, Wei; Zhao, Fei; Wang, Caiyun; Liu, Peng |
| 刊名 | IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
 |
| 出版日期 | 2015 |
| 卷号 | 53期号:9页码:5229-5236 |
| 关键词 | Calibration frequency oscillators radar altimetry transponders |
| ISSN号 | 0196-2892 |
| 通讯作者 | Wang, CY (reprint author), Chinese Acad Sci, Natl Space Sci Ctr, Key Lab Microwave & Remote Sensing Technol, Ctr Space Sci & Appl Res, Beijing 100190, Peoples R China. |
| 英文摘要 | This paper presents a method estimating the HY-2A altimeter ultrastable oscillator (USO) drift with a reconstructive transponder. The frequency of the USO of the in-orbit altimeter changes with age, and a bias between the actual frequency and the nominal one exists. The USO bias contributes a portion of the altimeter range drift. The HY-2A altimeter transmits signals at a fixed time interval during calibration, and the actual interval between adjacent altimeter transitions, which is controlled by the USO, is different from the nominal one due to the USO drift. The reconstructive transponder measures the arrival times of the altimeter transmitted signals accurately with the atomic clock. The drift of the USO on board the HY-2A altimeter can be estimated accurately by using the ranges from the reconstructive transponder and the HY-2A altimeter. The USO drifts of around 40 cm/year are presented. Furthermore, the multimission cross calibration provides preliminary validation of the HY-2A altimeter USO drift. |
| 收录类别 | SCI ; EI |
| 语种 | 英语 |
| 源URL | [http://ir.nssc.ac.cn/handle/122/4619]  |
| 专题 | 国家空间科学中心_微波遥感部 |
| 推荐引用方式 GB/T 7714 | Wan, Junzhi,Guo, Wei,Zhao, Fei,et al. HY-2A Radar Altimeter Ultrastable Oscillator Drift Estimation Using Reconstructive Transponder With Its Validation By Multimission Cross Calibration[J]. IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING,2015,53(9):5229-5236. |
| APA | Wan, Junzhi,Guo, Wei,Zhao, Fei,Wang, Caiyun,&Liu, Peng.(2015).HY-2A Radar Altimeter Ultrastable Oscillator Drift Estimation Using Reconstructive Transponder With Its Validation By Multimission Cross Calibration.IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING,53(9),5229-5236. |
| MLA | Wan, Junzhi,et al."HY-2A Radar Altimeter Ultrastable Oscillator Drift Estimation Using Reconstructive Transponder With Its Validation By Multimission Cross Calibration".IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING 53.9(2015):5229-5236. |
入库方式： OAI收割
来源：国家空间科学中心
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