| GNSS载噪比反演船载气象要素传感器距水面高度 |
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| 引用本文： | 仇志金,胡桐,邹靖,李志乾,王波.GNSS载噪比反演船载气象要素传感器距水面高度[J].全球定位系统,2022,47(2):1-6. |
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| 作者姓名： | 仇志金 胡桐 邹靖 李志乾 王波 |
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| 作者单位： | 1.齐鲁工业大学(山东省科学院)海洋仪器仪表研究所, 山东 青岛 266061 |
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| 基金项目： | 国家重点研发计划项目(2019YFC1408003)；2020年自主创新能力提升专项(智慧海洋工程)中央基建投资项目(Z135060000070)；国家自然科学基金(41606112，42076195，42176185)；山东省自然科学基金 (ZR2020MF022，ZR2020QD085，ZR2021MD114) |
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| 摘 要： | 船载气象要素传感器距水面高度是使用块体参数化方法预测近海面大气折射率廓线的必要参数，对于海面蒸发波导等无线电气象系统监测结果的准确性具有重要意义. 利用全球卫星导航系统(GNSS)载噪比(CNR)时间序列反演船载气象要素传感器距水面高度. 该方法提取船舶GNSS接收机输出的卫星信号CNR，采用Lomb Scargle周期谱分析GNSS直射信号与反射信号相干性，反演天线相位中心距水面高度. 根据GNSS天线与气象要素传感器几何关系换算船载气象要素传感器距水面高度. 利用趸船实验数据对该方法进行验证，统计有效反演次数，分析海况对反演结果的影响以及反演高度时均变化. 结果表明:利用该方法反演船载气象要素传感器距水面高度是可行的.
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| 关 键 词： | 全球卫星导航系统(GNSS) 全球卫星导航系统反射信号(GNSS-R) 无线电气象 载噪比(CNR) 反演 |
| 收稿时间： | 2021-10-13 |
Inversion of shipborne meteorological sensor height above water surface based on GNSS carrier-to-noise ratio |
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| Institution: | 1.Institute of Oceanographic Instrumentation, Qilu University of Technology (Shandong Academy of Sciences), Qingdao 266061, China2.Shandong Provincial Key Laboratory of Marine monitoring instrument equipment technology, Qingdao 266061, China3.National Engineering and Technological Research Center of Marine Monitoring Equipment, Qingdao 266061, China |
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| Abstract: | The height of shipborne meteorological sensor above water surface is a necessary parameter to predict the atmospheric refractive index profile by using the bulk aerodynamical method, which is of great significance to the radio meteorological parameter monitoring systems such as evaporation duct monitoring system. The Global Navigation Satellite System (GNSS) carrier-to-noise ratio (CNR) is extracted from the shipborne GNSS receiver output. The coherence of GNSS direct signal and reflected signal from water surface is analyzed using Lomb Scargle Periodogram to retrieve the height of the GNSS antenna phase center above reflection surface, and then the height of shipborne meteorological sensor is calculated indirectly. The proposed method was verified by barge experiments. Based on the statistics of the effective inversions, the sea state influence on the inversion results as well as the time-averaged variation of the inversion results is analyzed. It shows that the height of shipborne meteorological sensor can be effectively retrieved. |
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