| 环渤海区域GPS坐标时间序列噪声分析 |
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| 引用本文： | 徐爽,孙阳,苏亚聪,周海龙.环渤海区域GPS坐标时间序列噪声分析[J].北京测绘,2020(2):269-273. |
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| 作者姓名： | 徐爽 孙阳 苏亚聪 周海龙 |
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| 作者单位： | 山东科技大学测绘科学与工程学院 |
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| 摘 要： | 本文以环渤海区域GPS基准站2013年至2018年观测数据为基础,从噪声特性及时间序列参数方面进行分析。利用最大似然估计法估计环渤海区域27个测站坐标时间序列在不同噪声模型下的噪声量级及时间序列参数。针对最佳噪声模型,利用谱指数和最大似然估计两种方法分别从定性和定量确定。结果表明,测站的最佳噪声模型主要有WN+FN和WN+FN+RWN两种模型组合,绝大多数测站的最佳噪声模型为WN+FN,其中WN+FN+RWN模型主要分布在基岩类型为土层的基准站上,WN+FN模型主要分布在基岩类型为基岩的基准站上。
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| 关 键 词： | 全球定位系统(GPS) 噪声 谱指数 最大似然估计法 |
Analysis of GPS Coordinate Time Series Noise in Bohai Rim Region |
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| XU Shuang,SUN Yang,SU Yacong,ZHOU Hailong.Analysis of GPS Coordinate Time Series Noise in Bohai Rim Region[J].Beijing Surveying and Mapping,2020(2):269-273. |
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| Authors: | XU Shuang SUN Yang SU Yacong ZHOU Hailong |
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| Institution: | (College of Geomatics, Shandong University of Science and Technology, Qingdao Shandong 266590, China) |
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| Abstract: | This paper analyzes the noise characteristics and time series parameters based on the observation data of GPS reference station in bohai sea area from 2013 to 2018.The maximum likelihood estimation method is used to estimate the noise magnitude and time series parameters of the coordinate time series of 27 stations in the bohai rim region under different noise models.For the optimal noise model,spectral index and maximum likelihood estimation are used to determine it qualitatively and quantitatively.The results show that the optimal noise model of the station mainly consists of WN+FN and WN+FN+RWN,and the optimal noise model of most stations is WN+FN,where the WN+FN+RWN model is mainly distributed at the reference station where the bedrock type is soil layer,and the WN+FN model is mainly distributed at the reference station where the bedrock type is bedrock. |
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| Keywords: | Global Position System(GPS) noise spectralindex maximum likelihood estimation |
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