| 地震对GPS站坐标时序共模误差的影响分析 |
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| 引用本文： | 余新平,成英燕,朱文娟,姚向东,闫忠宝.地震对GPS站坐标时序共模误差的影响分析[J].测绘工程,2017,26(12). |
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| 作者姓名： | 余新平 成英燕 朱文娟 姚向东 闫忠宝 |
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| 作者单位： | 1. 山东科技大学 测绘科学与工程学院,山东 青岛 266000;中国测绘科学研究院,北京 100830;2. 中国测绘科学研究院,北京,100830;3. 山东科技大学 测绘科学与工程学院,山东 青岛,266000 |
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| 基金项目： | 国家重点研发计划资助项目，国家自然科学基金资助项目，国家公益性行业专项资助项目 |
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| 摘 要： | 通过选取日本7个IGS基准站在东日本大地震前后各3a的坐标时间序列,提取并分析此区域的共模误差的特点和地震对其的影响,以及共模误差对基准站噪声时序的影响。结果表明:滤波后测站各方向坐标时序平均均方根相较于过滤前明显减少,测站坐标可靠性和精确性得到明显提高;地震的发生导致其N、U方向均值分别增大2.1倍和1.5倍;共模误差在N、E、U方向均表现出明显的周期特性,其周期特性在地震前后几乎截然相反,地震对其周期特性的影响必须充分考虑。
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| 关 键 词： | IGS基准站 时间序列 共模误差 地震 周期特性 |
Influence of earthquake on the common mode error of GPS station coordinate time series |
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| YU Xinping,CHENG Yingyan,ZHU Wenjuan,YAO Xiangdong,YAN Zhongbao.Influence of earthquake on the common mode error of GPS station coordinate time series[J].Engineering of Surveying and Mapping,2017,26(12). |
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| Authors: | YU Xinping CHENG Yingyan ZHU Wenjuan YAO Xiangdong YAN Zhongbao |
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| Abstract: | Focused on the coordinate time series captured from 7 IGS reference stations in three years before and after the March 11th Japan earthquake, the common mode error of this region is extracted,and meanwhile,the characteristics of the common mode errors, the influence of the earthquake and the influence of common mode error on the noise time series of reference station in this area are analyzed. Conclusion are drawn that after filtering,the mean RMSE of the coordinate time series in each direction is obviously reduced, and the reliability and accuracy of the measuring station coordinate are obviously improved.The occurrence of earthquake leads to the increase of N and U direction respectively 2.1 times and 1.5 times.The common mode errors in N, E, U direction all show a relatively obvious periodic characteristic,and the period characteristic of the common mode is quite different from before and after the earthquake.Thus,the influence of the earthquake on the period characteristic must be fully considered. |
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| Keywords: | IGS reference station time series common mode error earthquake periodic characteristics |
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