An improved method of absolute calibration to satellite altimeter：A case study in the Yellow Sea, China

LIU Yalong; TANG Junwu; ZHU Jianhua; LIN Mingsen; ZHAI Wanlin; CHEN Chuntao

doi:10.1007/s13131-014-0476-8

一种改进的卫星高度计绝对定标方法:以中国黄海海上试验为例

doi: 10.1007/s13131-014-0476-8

1.
Ocean University of China, Qingdao 266100, China;National Ocean Technological Center, State Oceanic Administration, Tianjin 300112, China;National Satellite Ocean Application Service, State Oceanic Administration, Beijing 100081, China
2.
Ocean University of China, Qingdao 266100, China;National Ocean Technological Center, State Oceanic Administration, Tianjin 300112, China
3.
National Ocean Technological Center, State Oceanic Administration, Tianjin 300112, China
4.
National Satellite Ocean Application Service, State Oceanic Administration, Beijing 100081, China

基金项目: The Marine Public Welfare Projects of China under contract No. 201105032; the National High-Tech Project of China under contract No. 2008AA09A403.

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出版历程
- 收稿日期: 2013-04-16
- 修回日期: 2013-10-08

An improved method of absolute calibration to satellite altimeter：A case study in the Yellow Sea, China

1.
Ocean University of China, Qingdao 266100, China;National Ocean Technological Center, State Oceanic Administration, Tianjin 300112, China;National Satellite Ocean Application Service, State Oceanic Administration, Beijing 100081, China
2.
Ocean University of China, Qingdao 266100, China;National Ocean Technological Center, State Oceanic Administration, Tianjin 300112, China
3.
National Ocean Technological Center, State Oceanic Administration, Tianjin 300112, China
4.
National Satellite Ocean Application Service, State Oceanic Administration, Beijing 100081, China

摘要

摘要: 通过两次实验性的海上实验，基于间接测量提出一种改进的高度计绝对定标方法，并使用田横岛验潮仪和高度计星下点处GPS测量的海表面高度对此方法进行评估。研究利用大地水准面和平均海平面数据用来解释验潮仪和GPS定常水位差，用潮汐模型数据来说明随时间变化的水位差，由此，便可间接地通过岸基验潮仪来获取星下点的水位。基于此方法的外插精度为1.88?0.20cm，标准差为3.3cm，表明本研究提出的改进方法对高度计的绝对定标是切实可行的，同时极大地便利了原本较为繁琐的星下点水位测量。
- 雷达高度计,绝对定标,黄海
Abstract: An improved absolute calibration technology based on indirect measurements was developed through two probative experiments, the performance of which was evaluated by applying the approach to in situ sea surface height (SSH) at the Tianheng Island (tidal gauge) and the satellite nadir (GPS buoy). Using Geoid/MSS (mean sea surface) data, which accounted for a constant offset between nadir and onshore tidal gauge water levels, and TMD (tidal model driver), which canceled out the time-varying offsets, nadir SSH (sea surface height) could be indirectly acquired at an onshore tidal gauge instead of from direct offshore observation. The approach extrapolated the onshore SSH out to the offshore nadir with an accuracy of (1.88±0.20) cm and a standard deviation of 3.3 cm, which suggested that the approach presented was feasible in absolute altimeter calibration/validation (Cal/Val), and the approach enormously facilitated the obtaining SSH from the offshore nadir.
- radar altimeter

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参考文献(47)

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文章访问数: 1345
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一种改进的卫星高度计绝对定标方法:以中国黄海海上试验为例

doi: 10.1007/s13131-014-0476-8

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An improved method of absolute calibration to satellite altimeter：A case study in the Yellow Sea, China

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