无线射频干扰对SMOS卫星盐度数据产品准确度的影响研究

发布时间：2018-05-19 14:36

  本文选题：无线射频干扰 + 微波辐射　； 参考：《海洋学报》2017年11期

【摘要】：SMOS卫星数据发布以来,相关学者针对海表盐度数据开展了大量的真实性检验工作,但是在受无线射频干扰(RFI)影响海域开展的相关工作很少。本文以西太平洋海域为研究区域,选择合理的时空匹配窗口,将WOD13实测海表盐度数据与SMOS卫星单轨海表盐度数据进行数据匹配,采用统计学方法开展SMOS卫星数据真实性检验,并分析RFI对SMOS卫星数据的影响。结果表明,SMOS卫星受分布在西太平洋沿岸射频干扰源的影响,RFI污染高风险区单轨L2数据准确度相对较低,最优仅为3.45,RFI污染低风险区的卫星数据准确度最优为1.07,可见,RFI对单轨卫星数据准确度的影响很大,最终导致西太平洋海域西部大面积海域数据缺失,尤其是中国近海海域,如何检测和减缓RFI对卫星数据的影响是亟待解决的问题。
[Abstract]:Since the publication of SMOS satellite data, scholars have carried out a lot of authenticity verification work on sea surface salinity data, but few work has been done in the sea area affected by radio frequency interference. In this paper, the western Pacific Ocean is chosen as the study area, and a reasonable temporal and spatial matching window is chosen to match the WOD13 measured sea surface salinity data with the SMOS satellite monorail sea surface salinity data. The authenticity of the SMOS satellite data is verified by statistical method. The influence of RFI on SMOS satellite data is analyzed. The results show that the SMOS satellite is affected by the radio frequency interference sources along the western Pacific coast, and the accuracy of L2 data in the high risk area of RFI pollution is relatively low. The optimal accuracy of satellite data in the low risk area of low risk of pollution is only 3.45 渭 m RFI is 1.07. it can be seen that RFI has a great influence on the accuracy of monorail satellite data, resulting in the absence of data in the western Pacific Ocean, especially in the offshore waters of China, in the western part of the Pacific Ocean, especially in the offshore waters of China. How to detect and mitigate the influence of RFI on satellite data is an urgent problem to be solved.
【作者单位】： 国家海洋环境监测中心海域资源环境动态监管中心;青岛大学物理科学学院;上海海洋大学海洋科学学院;
【基金】：国家重点研发计划资助(海洋环境安全保障专项——盐度计海洋信息提取技术(2016YFC1401006)) 国家自然科学基金(61273307)
【分类号】：P715.6
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本文编号：1910485