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题名: Global Statistical Assessment and Cross-Calibration with Jason-2 for Reprocessed HY-2A Altimeter Data
作者: Jiang, Maofei; Xu, Ke; Liu, Yalong
作者部门: 微波遥感部
通讯作者: Jiang, MF (reprint author), Chinese Acad Sci, Natl Space Sci Ctr, Key Lab Microwave Remote Sensing, 1 Nanertiao, Beijing 100190, Peoples R China.
关键词: Altimetry ; calibration ; validation ; HY-2A ; mean sea level ; sea level
刊名: MARINE GEODESY
ISSN号: 0149-0419
出版日期: 2018
卷号: 41, 期号:3, 页码:289-312
收录类别: SCI
英文摘要: HY-2 A (Haiyang-2 A) satellite was launched on August 16, 2011 and radar altimeter is one of its main payloads. We reprocessed two years of HY-2 A altimeter sensor geophysical dataset records (SGDR) data. This paper presents the main results in terms of reprocessed HY-2 A altimeter data quality: verification of data availability and validity, monitoring several relevant altimeter parameters, and assessment of the HY-2 A altimeter system performances. A cross-calibration analysis of reprocessed HY-2 A altimeter data with Jason-2 was conducted. The reprocessed HY-2 A altimeter data show good quality and have a low level of noise with respect to Jason-2. The same geophysical correction methods were used to calculate the sea surface height (SSH) for the two missions. The mean standard deviations of the crossover differences for HY-2 A and Jason-2 are 5.24cm and 5.34cm, respectively. The mean standard deviation of the crossover differences between HY-2 A and Jason-2 is 5.37cm. These show that HY-2 A can provide SSH measurements at almost the same level of accuracy as Jason-2. The relative SSH bias between HY-2 A and Jason-2 due to the Ultra Stable Oscillator (USO) drift is obviously observed, and it can affect the calculation of mean sea level and should be further studied and corrected.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.nssc.ac.cn/handle/122/6332
Appears in Collections:微波遥感部_期刊论文

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