Through the study of least square collocation method, GPS survey time series and GPS baseline time series Are analyzed Then, the information with different frequency has been obtained after filtering.

• 摘要通过对最小二乘配置方法的研究，应用该方法对GPS观测值时间序列和GPS基线时间序列进行分析，完成滤波并提取出不同频段的信息。