| 基于济南地区的对流层湿延迟模型对比研究 |
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| 引用本文： | 舒婷婷,朱庆林,刘琨,林乐科.基于济南地区的对流层湿延迟模型对比研究[J].电波科学学报,2020,35(3):422-429. |
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| 作者姓名： | 舒婷婷 朱庆林 刘琨 林乐科 |
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| 作者单位： | 中国电波传播研究所, 青岛 266107 |
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| 摘 要： | 为提高济南地区对流层路径湿延迟测量精度，改善此地区大气折射修正误差，进一步提高该地区导航、定位、测控雷达等无线电测控系统的精度和性能，文中以济南站全球电信系统（Global Telecommunications System，GTS）探空数据计算的天顶湿延迟、斜路径湿延迟为比较基准，比较分析了利用Marcor技术、Hopfield模型、Ifadis模型所得到的对流层天顶湿延迟和斜路径湿延迟.比较结果表明:利用Marcor技术所得到的天顶湿延迟和斜路径湿延迟比其他模型得到的精度高，且仰角越低，斜路径湿延迟相对精度越高.这表明Marcor技术在济南地区具有很强的适用性，是获取高精度对流层湿延迟有效手段之一，有望逐步取代气象探空技术在工程中应用.
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| 关 键 词： | 对流层湿延迟 水汽辐射计 Marcor技术 映射函数 射线追踪 |
| 收稿时间： | 2019-05-06 |
Comparative study of wet delay models and model based on Marcor technology in Ji'nan area |
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| Affiliation: | China Research Institute of Radio wave Propagation, Qingdao 266107, China |
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| Abstract: | In order to improve the Ji'nan area accuracy of tropospheric path wet delay measurement, improve the correction error of atmospheric refraction, and further improve Ji'nan area navigation and positioning, the Ji'nan area accuracy and performance of radio measurement and control system, based on the comparison datum of zenith wet delay and path wet delay calculated by Global Telecommunications System (GTS) sounding data of Ji'nan Station, the tropospheric zenith wet delay and path wet delay obtained by Marcor technology, Hopfield model and Ifadis model are compared and analyzed. The results show that the accuracy of zenith wet delay and path wet delay obtained by Marcor technology is higher, and the lower the elevation angle, the higher the relative accuracy of path wet delay. This indicates that Marcor technology has strong applicability in Ji'nan area, and is one of the effective means to obtain high-precision tropospheric wet delay. It is expected to gradually replace meteorological sounding technology in engineering applications. |
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