HY-2A卫星海面高度数据质量评估

杨光; 宋清涛; 蒋兴伟; 王兆徽

doi:10.3969/j.issn.0253-4193.2016.11.008

HY-2A卫星海面高度数据质量评估

doi: 10.3969/j.issn.0253-4193.2016.11.008

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研究重点实验室, 北京 100081

基金项目: 基金面上项目（41276019）；海洋公益性行业科研专项（201305032）；广东省科技计划项目（20BB020200013）。

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出版历程
- 收稿日期: 2015-05-16
- 修回日期: 2015-09-05

Preliminary assessment of the quality of HY-2A satellite sea surface height data

National Satellite Ocean Application Service, Beijing 100081, China;Key Laboratory of Ocean Space Remote Sensing and Application, State Oceanic Administration, Beijing 100081, China

摘要

摘要: 对HY-2A卫星雷达高度计数据进行筛选获取有效的观测点，利用HY-2A卫星第18~23周期数据和同时在轨的Jason-2数据进行交叉点选取，对两颗卫星在交叉点海面高度异常值的差值进行统计与分析，提出了基于交叉点差值统计特征的筛除HY-2A轨道数据方法，评估了HY-2A卫星雷达高度数据质量。结果显示，HY-2A卫星18~23周期阈值筛选去除的点个数占总海洋观测点约12%，HY-2A海面高度异常与Jason-2海面高度异常的标准偏差在7.0 cm，数据精度满足设计精度要求。
- HY-2A /
- 雷达高度计 /
- 海面高度 /
- HY-2A质量评估
Abstract: The HY-2A radar altimeter effective measurements of the sea surface height (SSH) were selected using the IGDR editorial criteria. The crossover points of HY-2A satellite SSH data from cycle 18 to 23 and Jason-2 data within 5 days were determined. The erroneous measurement orbits were removed based on crossover statistics of HY-2A and Jason-2. The quality of the HY-2A SSH data is evaluated using statistics of crossover difference analysis. The cross calibration results show that the number of HY-2A data points removed by the editorial criteria is about 12% of the total HY-2A SSH observations. It is found in this study the standard deviation of SSH between HY-2A satellite and Jason-2 is 7.0 cm for the HY-2A cycles used in this study, and the accuracy of SSH measurements of HY-2A meets the requirements of sensor design.
- HY-2A /
- radar altimeter /
- sea surface height /
- HY-2A quality assessment

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参考文献(13)

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