利用陆态网络连续GNSS资料分析流动站速率精度与可靠性

发布时间：2018-02-27 22:32

本文关键词： 陆态网络 GNSS 流动站精度　出处：《大地测量与地球动力学》2017年01期 　论文类型：期刊论文

【摘要】：利用中国大陆构造环境监测网络(陆态网络)的GNSS连续站资料,分析GNSS流动站观测的精度与可靠性,研究时间跨度、观测周期以及观测时长对速率精度的影响。结果表明,时间跨度对流动站速率精度的影响显著,观测时间越长,流动站速率越接近连续站。按照陆态网络目前每2a观测1期的模式,当时间跨度达到16a时,流动站与连续站速率差异的标准差在水平方向约为0.1mm/a,垂直方向约为0.3mm/a。不同观测时长对流动站水平速率差异的影响基本小于0.15mm/a,垂直方向小于0.45mm/a。当观测时长大于或等于3d时,在水平方向的速率差异的标准差小于0.1mm/a。在时间跨度、观测时长一定时,观测周期越短,流动观测站结果越接近连续观测站结果。
[Abstract]:Based on the GNSS continuous station data of the tectonic environment monitoring network (land state network) in the mainland of China, the accuracy and reliability of GNSS mobile station observation are analyzed, and the effects of time span, observation period and observation duration on the rate accuracy are studied. The effect of time span on the rate accuracy of mobile station is significant. The longer the observation time is, the closer the rate of mobile station is to the continuous station. According to the current model of 1 observation period every 2 years in the land state network, when the time span reaches 16 years, The standard deviation of the velocity difference between the mobile station and the continuous station is about 0.1 mm / a in the horizontal direction and 0.3 mm / a in the vertical direction. The effect of different observation time on the horizontal rate difference of the mobile station is basically less than 0.15 mm / a, and the vertical direction is less than 0.45 mm / a. When the observation time is greater than or equal to 3 days, The standard deviation of the rate difference in the horizontal direction is less than 0.1 mm / a. When the time span and the observation time are fixed, the shorter the observation period is, the closer the flow observation results are to the continuous observation results.
【作者单位】：中国地震局地震研究所(地震大地测量重点实验室);中国地震局地壳应力研究所武汉科技创新基地;
【基金】：中国地震局地震行业科研专项(201508003;201508009);中国地震局地震研究所所长基金(201326119) 国家自然科学基金(41404015;41304067;41474097) 国家国际科技合作专项(2015DFA21260)~~
【分类号】：P228.4

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