| On the Non-linear Motion of IGS Station |
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| 作者姓名： | YAO Yibin |
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| 作者单位： | School of |
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| 基金项目： | Supported by the National 863 Program of China （No.2006AA12Z323）, the National 973 Program of China （No.2006CB701301）, the National Natural Science Foundation of China （No.40774008） and the Open Research Fund Program of Key Laboratory of Geospace Environment and Geodesy, Ministry of Education, China （No.06-10）. |
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| 摘 要： | With the daily SINEX files of the IGS, the time series of IGS stations are obtained using an independently developed software under generalized network adjustment models with coordinate patterns. From ...
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| 关 键 词： | IGS测站 非线性变化 光谱分析 经验模型 |
| 文章编号： | 1009-5020（2007）04-240-05 |
| 收稿时间： | 2007-09-07 |
On the non-linear motion of IGS station |
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| YAO Yibin.On the Non-linear Motion of IGS Station[J].Geo-Spatial Information Science,2007,10(4):240-244. |
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| Authors: | Yao Yibin |
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| Institution: | School of Geodesy and Geomatics, Wuhan University, 129 Luoyu Road, Wuhan 430079, China |
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| Abstract: | With the daily SINEX files of the IGS, the time series of IGS stations are obtained using an inde-pendently developed software under generalized network adjustment models with coordinate patterns. From the time series, non-linear motions are found. With spectral analysis method, the variation frequency (annual period and semi-annual period) of the site velocity is found. Moreover, the empirical model of the velocity variation of the station has been established by regression analysis method based on the weekly solution co-ordinate series of the station. With respect to the velocity of the IGS tracking station, it was better to model the variation periodically or to give a velocity periodically using a piece-wise linear function rather than a linear variable to estimate its bias. |
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| Keywords: | IGS station non-linear spectral analysis empirical model |
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