| Prophet模型在GNSS坐标时间序列中的插值分析 |
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| 引用本文： | 李威,鲁铁定,贺小星,刘瑞.Prophet模型在GNSS坐标时间序列中的插值分析[J].大地测量与地球动力学,2021,41(4):362-367. |
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| 作者姓名： | 李威 鲁铁定 贺小星 刘瑞 |
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| 作者单位： | 东华理工大学测绘工程学院,南昌市广兰大道418号,330013;华东交通大学土木建筑学院,南昌市双港东大街808号,330013 |
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| 基金项目： | 江西省科技落地计划;国家重点研发计划;江西省教育厅科学技术研究项目;江西省自然科学基金;国家自然科学基金 |
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| 摘 要： | 针对GNSS坐标时间序列中存在数据缺失的问题，提出将Prophet模型应用于GNSS坐标时间序列的插值中。设计不同的数据随机缺失比例和连续缺失长度，使用Prophet模型、拉格朗日法和三次样条法进行对比实验。结果表明，Prophet模型在GNSS坐标时间序列中具有更高的插值精度并能够保持较好的稳定性，且对于连续缺失的数据插值有着明显的优势。
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| 关 键 词： | 时间序列 插值 Prophet模型 拉格朗日法 三次样条法 |
Interpolation Analysis of Prophet Model in GNSS Coordinate Time Series |
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| LI Wei,LU Tieding,HE Xiaoxing,LIU Rui.Interpolation Analysis of Prophet Model in GNSS Coordinate Time Series[J].Journal of Geodesy and Geodynamics,2021,41(4):362-367. |
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| Authors: | LI Wei LU Tieding HE Xiaoxing LIU Rui |
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| Institution: | (School of Surveying and Mapping Engineering,East China University of Technology,418 Guanglan Road,Nanchang 330013,China;School of Civil Engineering and Architecture,East China Jiaotong University,808 East-Shuanggang Street,Nanchang 330013,China) |
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| Abstract: | Aiming at the problem of data missing in GNSS coordinate time series,this paper proposes to apply the Prophet model to the interpolation of GNSS coordinate time series.Through the design of different data random missing proportion and continuous missing length,we use the Prophet model,Lagrange and cubic spline method to carry out comparative experiments.Experimental results show that the Prophet model has higher interpolation accuracy and better stability in GNSS coordinate time series,and has obvious advantages for continuous missing data interpolation. |
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| Keywords: | time series interpolation Prophet model Lagrange method cubic spline method |
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