| 基于GNSS及探空仪数据的大气折射指数反演新方法 |
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| 引用本文： | 周冲冲,钟世明,李薇,欧吉坤.基于GNSS及探空仪数据的大气折射指数反演新方法[J].大地测量与地球动力学,2017,37(2):200-204. |
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| 作者姓名： | 周冲冲 钟世明 李薇 欧吉坤 |
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| 摘 要： | 提出一种综合GNSS及探空仪数据的对流层折射指数剖面反演模型新方法，利用GNSS观测数据直接采用参数估计计算测站高精度ZTD（zenith troposphere delay）值，结合探空数据构建测站上空折射指数分层剖面反演模型。通过BJFS（北京站）、WUHN（武汉站）、WIND（Windhoek站）和DARW（Darwin站）的实测数据进行相应计算与验证。结果表明，该反演模型与基于探空数据的反演模型精度相当，二者均优于Hopfield模型。同时该方法计算简便，且在模型建立后可以大大减少探空仪观测。
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| 关 键 词： | 探空数据 Hopfield ZTD GNSS |
A New Inversion Method of Atmospheric Refractivity Index Based on GNSS and Radiosonde Data |
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| ZHOU Chongchong,ZHONG Shiming,LI Wei,OU Jikun.A New Inversion Method of Atmospheric Refractivity Index Based on GNSS and Radiosonde Data[J].Journal of Geodesy and Geodynamics,2017,37(2):200-204. |
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| Authors: | ZHOU Chongchong ZHONG Shiming LI Wei OU Jikun |
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| Abstract: | Using GNSS and radiosonde data, a new inversion method is presented for troposphere refractivity index. A layered profile inversion model of parameters of refraction index above stations is constructed by combining radiosonde data and the high accuracy ZTD(zenith troposphere delay), which we estimate directly by GNSS observations of stations. Based on measured data from BJFS(Beijing station), WUHN(Wuhan station), WIND(Windhoek station) and DARW(Darwin station), this paper has accomplished corresponding calculations and validation. Eventually, the result shows that the new inversion model method and inversion model based on radiosonde data has the same accuracy, and their accuracy is even better compared with the inversion model of Hopfield. Furthermore, the new method is easy to calculate, and observations from radiosonde are greatly reduced when the new model is established. |
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| Keywords: | radiosonde data Hopfield zenith troposphere delay GNSS |
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