| 基于SSA-Sn法的GNSS坐标时间序列粗差探测 |
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| 引用本文： | 徐华卿,鲁铁定,贺小星,周世健,陶蕊.基于SSA-Sn法的GNSS坐标时间序列粗差探测[J].大地测量与地球动力学,2022,42(3):258-263. |
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| 作者姓名： | 徐华卿 鲁铁定 贺小星 周世健 陶蕊 |
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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,江西理工大学土木与测绘工程学院,江西省赣州市红旗大道 86 号,341000,南昌航空大学校长办公室,南昌市丰和南大道 696 号,330063 |
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| 基金项目： | 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高程坐标时间序列中含有粗差、高程坐标时间序列不平稳、非线性变化导致异常值探测困难等问题，提出一种奇异谱分析SSA与Sn估计量相结合的粗差探测方法。利用实验模拟数据和实测数据分别对该方法的探测效果同常规3σ法和MAD法进行对比，结果表明，SSA-Sn粗差探测方法的总体探测效果更好，能够满足GNSS坐标时间序列高可靠性的需求。
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| 关 键 词： | GNSS坐标时间序列 奇异谱分析法 粗差探测 |
GNSS Coordinate Time Series Gross Error Detection Based on SSA-Sn |
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| XU Huaqing,LU Tieding,HE Xiaoxing,ZHOU Shijian,TAO Rui.GNSS Coordinate Time Series Gross Error Detection Based on SSA-Sn[J].Journal of Geodesy and Geodynamics,2022,42(3):258-263. |
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| Authors: | XU Huaqing LU Tieding HE Xiaoxing ZHOU Shijian TAO Rui |
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| Institution: | (Faculty of Geomatics,East China University of Technology,418 Guanglan Road,Nanchang 330013,China;School of Civil and Surveying and Mapping Engineering,Jiangxi University of Science and Technology,86 Hongqi Road,Ganzhou 341000,China;Principal’s Office,Nanchang Hangkong University,696 South-Fenghe Road,Nanchang 330063,China) |
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| Abstract: | Aiming at the problems of gross errors in the GNSS elevation coordinate time series,instability in the elevation coordinate time series,and difficulty in detecting outliers caused by nonlinearity,we establish a gross error detection method combining SSA and Sn estimator with singular spectrum analysis.Using experimental simulation data and measured data respectively,we compare the detection effect of this method with the conventional 3σand MAD methods.The results show that the overall detection rate of the SSA-Sn gross error detection method is better and that it satisfies the demand for high-reliability GNSS coordinate time series. |
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| Keywords: | GNSS coordinate time series SSA gross error detection |
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