郭爱智, 王勇, 苏晓庆, 李建勇. 利用小波分解重构提取高频GPS数据静态永久性变形[J]. 武汉大学学报 ( 信息科学版), 2013, 38(10): 1192-1195.
引用本文: 郭爱智, 王勇, 苏晓庆, 李建勇. 利用小波分解重构提取高频GPS数据静态永久性变形[J]. 武汉大学学报 ( 信息科学版), 2013, 38(10): 1192-1195.
GUO Aizhi, WANG Yong, SU Xiaoqing, LI Jianyong. Resolving Static Offset from High-rate GPS Data by Wavelet Decomposition-Reconstruction Algorithm[J]. Geomatics and Information Science of Wuhan University, 2013, 38(10): 1192-1195.
Citation: GUO Aizhi, WANG Yong, SU Xiaoqing, LI Jianyong. Resolving Static Offset from High-rate GPS Data by Wavelet Decomposition-Reconstruction Algorithm[J]. Geomatics and Information Science of Wuhan University, 2013, 38(10): 1192-1195.

利用小波分解重构提取高频GPS数据静态永久性变形

Resolving Static Offset from High-rate GPS Data by Wavelet Decomposition-Reconstruction Algorithm

  • 摘要: 研究了利用小波分解重构提取高频GPS数据静态永久性变形的方法。通过对El Mayor-Cucapah地震和东日本大地震两次地震高频GPS数据的处理和分析表明,PPP模式处理的高频GPS数据能够获取和强震仪相近的短周期强运动位移信息,并且保留了静态永久性变形信息;利用小波分解重构可以高精度地估计高频GPS动态位移中的静态永久性变形,有效区分主震和余震造成的静态永久性变形以及震后蠕滑位移。

     

    Abstract: This paper focuses on the research of resolving static offset from high-rate GPS data by wavelet decomposition-reconstruction algorithm. After processing and analyzing the high-rate GPS data of El Mayor-Cucapah earthquake and Tohuko-Oki earthquake in precise point positioning (PPP) mode, we find that the short-period waveforms captured by high-rate GPS data processed in PPP mode are comparable with the twiceintegrated strong-motion records and the former one also could retain the static offset signal. Static offset resolved by decomposition-reconstruction algorithm from the high-rate GPS data is helpful to separatethe static offset induced by main shock, strong aftershock and the post-seismic deformation.

     

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