Coordinate time series analysis of Hong Kong CORS station
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摘要: 针对不同地区连续运行参考站(CORS)坐标时间序列周期特性与噪声特性存在的差异性问题,本文采用功率谱分析法和极大似然法分析香港卫星参考站网(SatRef)的坐标时间序列. 研究结果表明,参考站点的三个坐标分量上都存在明显的年周期项与半年周期项. 各参考站坐标分量上的噪声特性存在多样化的特征,白噪声(WN)加闪烁噪声(FN)是主要噪声模型,仅考虑WN而忽视有色噪声(CN)的做法会大大低估参数估计的不确定度. 根据最优噪声模型估值得出的SatRef站速度场在水平方向上有整体向东南方向运动的趋势,与华南块体的运动结果基本一致.Abstract: According to the difference between the periodic characteristics and the noise characteristics of the coordinate time series of CORS stations in different regions, the power spectrum analysis method and the maximum likelihood method are used to analyze the coordinate time series of the Hong Kong satellite reference station network (SatRef). The research results show that there are obvious annual period items and half-year period items on the three coordinate components of the reference station. There are diversified features of the noise characteristics on the coordinate components of each reference station. White noise plus flicker noise is the main noise model. The practice of considering only white noise and neglecting colored noise can greatly underestimate the uncertainty of parameter estimation. According to the optimal noise model, the velocity field of the SatRef station has a trend of moving toward the southeast in the horizontal direction, which is basically consistent with the motion of the South China block.
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[1] 姜卫平. GNSS基准站网数据处理方法与应用[M].武汉:武汉大学出版社,2017:154-155. [2] ZHANG J,BOCK Y,JOHNSON H,et al.Southern California permanent GPS geodetic array:error analysis of daily position estimates and site velocities[J].Journal of Geophysical Research,1997,1021(B8):18035-18055.DOI: 10.1029/97JB01380. [3] MAO A,HARRISON C G A.DIXON T H.Noise in GPS coordinate time series[J],Journal of Geophysical Research,1999,104(B2): 2797-2816.DOI: 10.1029/1998JB900033. [4] LANGBEIN J,Noise in GPS displacement measurement from Southern California and Southern Nevada[J]. Journal of Geophysical Research,2008,113(B5):1-12.DOI: 10.1029/2007JB005247. [5] 蒋志浩,张鹏,秘金钟,等.顾及有色噪声影响的CGCS2000下我国CORS站速度估计[J].测绘学报,2010,39(4):355-363. [6] 李昭,姜卫平,刘鸿飞,等.中国区域IGS基准站坐标时间序列噪声模型建立与分析[J],测绘学报,2012,41(4):496-503. [7] 李斐,马超,张胜凯,等.南极半岛地区GPS坐标时间序列噪声分析及形变模式初探[J],地球物理学报,2016,59(7):2402-2412. [8] 袁林果,丁晓利,陈武,等.香港GPS基准站坐标序列特征分析[J],地球物理学报,2008,51(5):1372-1384. [9] 韩英,符养.GPS 高程数据时间序列分析[J],武汉大学学报(信息科学版),2003,28(4):425-428. [10] 李蕾,葛悉佑,王静涛.南极IGS基准站时间序列极大似然法分析[J],测绘科学,2016,41(7):173-180,137. [11] DONG D, FANG P, BOCK Y,et al.Anatomy of apparent seasonal variations from GPS-derived site position time series[J].Journal of Geophysical Research,2002,107(B4):1-17. [12] 姚宜斌,施闯.IGS测站的非线性变化研究[J].武汉大学学报(信息科学版),2007,32(5):423426. [13] 张鹏,蒋志浩,秘金钟,等.我国GPS跟踪站数据处理与时间序列特征分析[J].武汉大学学报(信息科学版),2007,32(3):251254. [14] WILLIAMS S D P, BOCK Y, FANG P,et al. Error analysis of continuous GPS position time series[J], Journal of Geophysical Research,2004.109(B3).DOI: 10.1029/2003JB002741. [15] LANGBEIN J,Noise in two-color electronic distance meter measurements revisited[J],Journal of Geophysical Research,2004,109(B4).DOI: 10.1029/2003JB002741. [16] 曹奇,张迎燕,岳东杰,等:城市CORS坐标时间序列噪声模型建立与分析[J],大地测量与地球动力学,2015,35(6):1001-1006. [17] 杨登科,安向东,黄广利,等.不同GPS时间序列跨度对噪声模型建立的影响[J],测绘科学,2016,41(5):33-37. [18] 贺小星,花向红,鲁铁定,等.时间跨度对 GPS 坐标序列噪声模型及速度估计影响分析[J],国防科技大 学学报,2017,39(6):12-18. [19] 武曙光.区域CORS站坐标时间序列特征分析[D].武汉:武汉大学,2017. [20] 李婧.陆态网络基准站坐标时间序列变化特性分析[D].郑州:解放军信息工程大学.2013.
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