| GNSS坐标时间序列噪声特征分析 |
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| 引用本文： | 黄焱,田林亚,白云,张志强,张发平.GNSS坐标时间序列噪声特征分析[J].全球定位系统,2014,39(4):16-20. |
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| 作者姓名： | 黄焱 田林亚 白云 张志强 张发平 |
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| 作者单位： | 1. 青海省环境地质勘查局,青海西宁,810000
2. 河海大学地球科学与工程学院,江苏南京,210000 |
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| 摘 要： | 为了研究我国目前建立的连续运行参考网络（CORS）GNSS基准站的坐标时间序列噪声特征是否与国际领域研究的成果相符合,对江苏CORS网连续3年24个分布均匀的GNSS基准站的数据进行处理,利用GAMIT软件获取了各基准站的坐标时间序列,并利用CATS软件采用最大似然估计法对坐标时间序列的噪声特征进行了分析,结果表明：GNSS基准站坐标时间序列不仅包含白噪声,还包含有色噪声;GNSS基准站坐标时间序列在N、E、U方向的噪声类型并不完全一致,其中N、E方向的最佳噪声模型为“WH＋FN＋RWN”,U方向的最佳噪声模型为“WH＋FN”.
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| 关 键 词： | GNSS坐标时间序列 区域空间滤波 噪声特性 |
GNSS Coordinates Time Series Noise Characteristics Analysis |
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| HUANG Yan,TIAN Linya,BAI Yun,ZHANG Zhiqiang,ZHANG Faping.GNSS Coordinates Time Series Noise Characteristics Analysis[J].Gnss World of China,2014,39(4):16-20. |
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| Authors: | HUANG Yan TIAN Linya BAI Yun ZHANG Zhiqiang ZHANG Faping |
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| Affiliation: | HUANG Yan , TIAN Linya , BAI Yun , ZHANG Zhiqiang , ZHANG Faping (1. Environmental Geological Exploration Bureau of Qinghai Province, Xining Qinghai 810000,China; 2. Hehai University of Earth Science and Engineering, Nanjing Jiangsu 210000,China) |
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| Abstract: | In order to study the noise characteristics of GNSS coordinates time series of the CORS whether are consistent with the international research results or not. In this article, for four years 32 evenly distributed GNSS station data of JSCORS processing, obtained the coordinate time series of each station by the GAM1T/GLOBK, then using the method of maximum likelihood estimate of the CATS software to analyze the noise characteristics of the coordinate time series of 32 stations. The result showed that： the coordinate time series of GNSS stations not only contain the white noise, but also the colored noise, the type of noise at N.E,U directions is not consistent, the best noise for N.E directions is ＂WH＋FN＋ RWN＂ and ＂WH＋FN＂ for U direction. |
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| Keywords: | GNSS coordinates time series regional spatial filtering CATS noise char- acteristics |
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