| 基于现场观测数据的HY-2A卫星有效波高校正研究 |
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| 引用本文： | 彭海龙,林明森.基于现场观测数据的HY-2A卫星有效波高校正研究[J].海洋学报(英文版),2016,35(3):79-83. |
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| 作者姓名： | 彭海龙 林明森 |
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| 作者单位： | 中国海洋大学信息科学与工程学院, 青岛 266100;国家卫星海洋应用中心, 北京 100081;国家海洋局空间海洋遥感与应用重点实验室, 北京 100081,国家卫星海洋应用中心, 北京 100081;国家海洋局空间海洋遥感与应用重点实验室, 北京 100081 |
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| 摘 要： | Significant wave height(SWH) can be computed from the returning waveform of radar altimeter, this parameter is only raw estimates if it does not calibrate. But accurate calibration is important for all applications, especially for climate studies. HY-2a altimeter has been operational since April 2012 and its products are available to the scientific community. In this work, SWH data from HY-2A altimeters are calibrated against in situ buoy data from the National Data Buoy Center(NDBC), Distinguished from previous calibration studies which generally regarded buoy data as "truth", the work of calibration for HY-2A altimeter wave data against in situ buoys was applied a more sophisticated statistical technique—the total least squares(TLS) method which can take into account errors in both variables. We present calibration results for HY-2A radar altimeter measurement of wave height against NDBC buoys. In addition, cross-calibration for HY-2A and Jason-2 wave data are talked over and the result is given.
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| 关 键 词： | 整体最小二乘法 NDBC浮标 HY-2A 雷达高度计 有效波高 |
| 收稿时间： | 6/3/2015 12:00:00 AM |
| 修稿时间： | 2015/8/20 0:00:00 |
Calibration of HY-2A satellite significant wave heights with in situ observation |
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| PENG Hailong and LIN Mingsen.Calibration of HY-2A satellite significant wave heights with in situ observation[J].Acta Oceanologica Sinica,2016,35(3):79-83. |
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| Authors: | PENG Hailong and LIN Mingsen |
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| Institution: | College of Information Science and Engineering, Ocean University of China, Qingdao 266100, China;Nation Satellite Ocean Application Service, State Oceanic Administration, Beijing 100081, China;Key Laboratory of Space Ocean Remote Sensing and Application, State Oceanic Administration, Beijing 100081, China and Nation Satellite Ocean Application Service, State Oceanic Administration, Beijing 100081, China;Key Laboratory of Space Ocean Remote Sensing and Application, State Oceanic Administration, Beijing 100081, China |
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| Abstract: | Significant wave height (SWH) can be computed from the returning waveform of radar altimeter, this parameter is only raw estimates if it does not calibrate. But accurate calibration is important for all applications, especially for climate studies. HY-2a altimeter has been operational since April 2012 and its products are available to the scientific community. In this work, SWH data from HY-2A altimeters are calibrated against in situ buoy data from the National Data Buoy Center (NDBC), Distinguished from previous calibration studies which generally regarded buoy data as "truth", the work of calibration for HY-2A altimeter wave data against in situ buoys was applied a more sophisticated statistical technique-the total least squares (TLS) method which can take into account errors in both variables. We present calibration results for HY-2A radar altimeter measurement of wave height against NDBC buoys. In addition, cross-calibration for HY-2A and Jason -2 wave data are talked over and the result is given. |
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| Keywords: | total least squares NDBC buoys HY-2A altimeter significant wave height |
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