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| 引用本文： | 任夏,杨元喜.GEO?????????????????п????????[J].大地测量与地球动力学,2014,34(2):115-119. |
| 作者姓名： | 任夏 杨元喜 |
| 作者单位： | 1）信息工程大学导航与空天目标工程学院，郑州 450052 2）地理信息工程国家重点实验室，西安 710054 3）西安测绘研究所，西安 710054 |
| 基金项目： | 国家自然科学基金（4102014404） |
| 摘 要： | ?????GEO??????????????????????????????????????????????????????????????????????????????????????????е????????????в???????????????????????????????????????????????????????в??????????????????????????AR????в??????????????????????????????????????????????????????????????????????????????ζ??????????????????????????????????????????????????????????????????GEO?????????????Ч??? |
| 关 键 词： | ???????? ??????? ????????? ??????? AR??? |
| 收稿时间： | 2013-12-04 |
ROBUST SPECTRAL ANALYSIS OF TIME SERIES OF GEO IONOSPHERIC CORRECTION |
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| Ren Xia,Yang Yuanxi.ROBUST SPECTRAL ANALYSIS OF TIME SERIES OF GEO IONOSPHERIC CORRECTION[J].Journal of Geodesy and Geodynamics,2014,34(2):115-119. | |
| Authors: | Ren Xia Yang Yuanxi |
| Institution: | 1）College of Navigation & Aerospace Engineering，Information Engineering University，Zhengzhou 450052 2）State Key Laboratory of Geographic Information Engineering，Xi’an 710054 3）Xi’an Research Institute of Surveying and Mapping，Xi’an 710054 |
| Abstract: | Ionospheric delay was obtained with day’s observation data from Compass GEO satellite，based on dual frequency ionospheric correction model.The robust spectral analysis method was applied to analize ionosphere delay data for detaching the long term，period terms and random errors and controlling the effects of error on the terms.In order to control the influences of colored noises，the residuals are fitted by using an AR model.The result shows that the ionospheric correction is effected by not only trend term and period term changes，but also by color noises.After being fitted by piecewise polynomial，period terms and color noise，the ionospheric correction residual terms turn out to be white noises.The result proves the method is seffective. |
| Keywords: | ionospheric correction time series robust spectral analysis color noise AR model |
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