本文就如何利用高频 GNSS 数据提取地震波信号进行讨论，选取2011年3月11日日本9.0级地震前后日本境内及周边 IGS 基准站的高频 GNSS 数据作为研究对象，首先用TRACK 软件对观测站的 GNSS 数据进行解算，获得相应的位移时间序列，然后利用恒星日滤波算法对所得到的位移时间序列进行去噪，进而获得高精度地震位移波动信号，结果表明，高频 GNSS 对地震监测是一种有益的补充，对于拓展地震波获取方法以及更深入研究地震信息具有重要意义。%In this paper,how to realize the use of high frequency GNSS data to extract the seismic wave signal is discussed.We choose the high frequency GNSS data about the IGS reference stations before and after the Tohoku-oki M9.0 earthquake on Mar.1 1,201 1 in Ja-pan and its surrounding as the research object.First of all,we need to use the GNSS obser-vation data with TRACK software to get the corresponding displacement time series.Then deal with the noise of the displacement time series with sidereal filtering algorithm,then we will get the displacement signal,which is a meaningful supplement for deformation monito-ring.Using the high frequency GNSS data to extract the seismic wave signal will expand the seismic acquisition method and further research in earthquake and it will be of great signifi-cance.
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