侯争,郭增长,杜久升,黄晓东,康育鹏

• 1:河南理工大学
• 2:河南测绘职业学院

摘要(Abstract)：

针对地表质量负荷对京津地区GNSS坐标时间序列噪声特性的影响,选取中国大陆构造环境监测网络8个GNSS基准站2012—2014年的坐标时间序列,利用CATS软件计算大气压、非潮汐海洋、积雪和土壤湿度等质量负载改正前后GNSS坐标时间序列的谱指数、最优噪声模型、速度的变化。发现地表质量负载对GNSS坐标时间序列的噪声特性产生了明显影响。结果显示,京津地区GNSS坐标序列包含白噪声和有色噪声,且最优噪声模型具有多样性。扣除质量负载后N、U分量的噪声模型变化明显,主要表现为FN+WN和PL+WN,而N、E分量的谱指数分别趋近于FN和WN。质量负载改正后基准站U方向的线性速度变化较大,且北京地区变化量大于天津地区。研究结果为提高GNSS数据解算精度、精细分析地壳形变提供参考。

关键词(KeyWords)： 白噪声;地表质量负载;极大似然估计;谱指数;最优噪声模型

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目（41774041）;; 教育部人文社会科学青年基金项目（17YJCZH041）;; 煤炭工业协会科学技术研究指导性计划项目（MTKJ2016-212）;; 河南省自然科学基金项目（182300410111,182300410115）

作者(Author): 侯争,郭增长,杜久升,黄晓东,康育鹏

DOI: 10.16251/j.cnki.1009-2307.2019.12.010

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