| 刘治中,杨俊钢,张杰,崔伟.基于与Jason-2数据比对的Jason-3卫星高度计全球数据质量评估[J].海洋学报,2020,42(3):129-139 |
| 基于与Jason-2数据比对的Jason-3卫星高度计全球数据质量评估 |
| Jason-3 global statistical assessment based on Jason-2 |
| 投稿时间：2019-04-22 修订日期：2019-09-06 |
| DOI：10.3969/j.issn.0253-4193.2020.03.012 |
| 中文关键词: Jason-3高度计 Jason-2高度计 数据质量 评估 |
| 英文关键词:Jason-3 satellite Jason-2 satellite data quality evaluation |
| 基金项目:国家重点研发计划（2016YFA0600102）；国家自然科学基金（41576176）。 |
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| 中文摘要: |
| Jason-3卫星高度计于2016年1月17日成功发射，2016年2月12日进入预定轨道，与Jason-2高度计同轨进入编队飞行阶段，并落后Jason-2高度计约1分20秒，两者相距约560 km。2016年9月1日，Jason-2高度计变换轨道，编队飞行阶段结束，两高度计进入平行轨道，以增加卫星高度计对地观测的空间覆盖。本研究主要开展了Jason-3高度计的数据质量的评估与检验，包括Jason-3高度计数据可用性和有效性的验证，以及Jason-3高度计和校正辐射计各参数的数据质量监测。重点开展了Jason-2与Jason-3高度计各项参数的综合比较，利用Jason-2与Jason-3高度计编队飞行阶段的数据精确评估了两高度计参数的一致性，并从全球数据角度分析了Jason-3高度计获取各参数的能力以及稳定性；通过与Jason-2互交叉点比较分析评估Jason-3高度计海面高度数据质量情况，验证Jason-3高度计数据精度。结果表明，Jason-3高度计的数据质量满足高度计测高的要求，具有与Jason-1、Jason-2、T/P等高度计相同或更高的测高精度以监测全球海平面变化，此外，Jason-3有效波高参数数据质量明显优于Jason-2高度计。 |
| 英文摘要: |
| Jason-3 satellite was successfully launched on January 17, 2016, and was put on its nominal orbit on February 12, 2016. Jason-3 was flying in formation with Jason-2 only 1 minute 20 seconds, and was about 560 km from Jason-2. Jason-2 was moved to its new interleaved orbit on September 1, 2016. Two orbits were parallel to increase the spatial coverage of satellite observations. The objectives of this paper are to assess Jason-3 data quality and to estimate the altimetry system performance includes validation of Jason-3 data availability and data quality monitoring of Jason-3 and radiometer parameters. The objectives focused on comprehensive comparison of the parameters of the Jason-2 and Jason-3, accurately evaluated the consistency of the two altimeter parameters using the opportunity that the missions were on the same ground track during the formation flight phase, analyzed the ability and stability of the Jason-3 from the perspective of global data, verified Jason-3 data accuracy by self-crossover analysis and dual crossover analysis with Jason-2. From the results presented here, it is demonstrated that the Jason-3 mission fulfils the requirements of high precision altimetry. It allows continuing the observation of the sea surface height variations at the same or higher accuracy as Jason-1, Jason-2 and T/P. In addition, significant wave height quality of Jason-3 data is significantly better than the Jason-2. |
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