摘要
利用谱方法和小波技术分析了我国IGS站坐标时间序列,阐述了其周期变化特征,即绝大部分台站在N、E、U方向都具有半年周期性、年周期性,U方向周期特性相对明显,同时台站的主要周期成分和时频局部特性又具有一定区域性。
The time series of IGS stations in China are studied using spectrum analysis and wavelet analysis, and their periodic variation characteristics are shown. Most stations have semi- annual and annual period variations in north, east and elevation directions. The periodicity of elevation coordinates is more obvious. Meanwhile, the main period and the local property in time- frequency of the stations show certain regional nature.
出处
《测绘信息与工程》
2008年第5期10-12,共3页
Journal of Geomatics
基金
国家"863计划"资助项目(2007AA12Z312)
关键词
我国IGS站
周期变化
谱分析
小波分析
IGS stations in China
periodic variation
spectrum analysis
wavelet analysis
