李蕾,葛悉佑,王静涛

• 1:天津市勘察院

摘要(Abstract)：

针对南极大陆IGS的周期特性、噪声特性、趋势特性等问题,该文采用极大似然法和功率谱分析法分析南极地区8个IGS永久观测站坐标的时间序列。研究结果表明,该地区水平和垂直方向上均有较明显的年周期项,垂直方向上还普遍存在半年周期项。闪烁噪声与白噪声组合能更好描述南极基准站3个分量上噪声特性,各方向上的速率不确定度比只考虑白噪声时要大10~15倍。通过估算基准站水平方向的运动速率,发现该方向上具有较规律的运动趋势:南极洲正缓慢向南美洲移动。

关键词(KeyWords)： 极大似然法;南极;时间序列;噪声模型;速度场;IGS基准站

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 李蕾,葛悉佑,王静涛

DOI: 10.16251/j.cnki.1009-2307.2016.07.031

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