High-Precision and High-Resolution Synchrosqueezing Transform via Time-Frequency Instantaneous Phases
High-Precision and High-Resolution Synchrosqueezing Transform via Time-Frequency Instantaneous Phases
复制标题
通过时频瞬时相位进行高精度、高分辨率同步压缩变换
DOI：
10.3390/app112411760
复制
发表时间：
2021-12
期刊：
影响因子：
--
通讯作者：
Gulan Zhang
中科院分区：
文献类型：
--
作者：
Yong Li;Gulan Zhang
同步压缩变换（SST）通过瞬时频率对时频谱进行压缩，可以有效地提高时频精度和分辨率，已被广泛应用于多个学科领域;然而，SST瞬时频率估计的精度通常受到输入信号时间采样间隔的影响，这往往导致SST结果精度不高或不准确，限制了SST的进一步应用。为了高效获得高精度、高分辨率SST结果，提出了一种基于时频瞬时相位（HSST）的高精度、高分辨率SST方法，利用去除周期跳变的时频瞬时相位进行高精度的瞬时频率估计和SST。两个合成信号的例子表明，HSST可以最大限度地减少时间采样间隔的影响，以实现高精度和高分辨率的SST结果与高效率。真实的三维地震资料应用表明，HSST具有良好的时频精度和分辨率提高性能，可广泛应用于数字信号处理和解释领域。
Synchrosqueezing transform (SST) can effectively improve time-frequency precision and resolution by squeezing time-frequency spectra via instantaneous frequencies, and it has been applied in many diverse disciplines; however, the precision of estimated instantaneous frequencies during SST is usually affected by the time-sample interval of the inputted signal; this usually leads to low-precision or inaccurate SST results and limits its further application. To obtain high-precision and high-resolution SST results with high efficiency, we propose a high-precision and high-resolution SST via time-frequency instantaneous phases (HSST); in HSST, time-frequency instantaneous phases with period-jumps removal are used for high-precision instantaneous frequencies estimation and SST. Two synthetic signal examples show that HSST can minimize the impact of the time-sample interval to achieve high-precision and high-resolution SST results with high efficiency. A real 3D seismic data application demonstrates that HSST has fantastic performance in time-frequency precision and resolution enhancement, and it can be widely used in digital signals processing and interpretation fields.
登录
查看更多内容
应用同步压缩小波变换估计储层流体流动性
影响因子：
2.6
作者：
Ya-Juan Xue;Jun-Xing Cao;Gu-Lan Zhang;Guang-Hui Cheng;Hui Chen
通讯作者：
Hui Chen
DOI：
10.1049/ep.1965.0268
发表时间：
1965
期刊：
Electronics and Power
影响因子：
--
作者：
K. W. Cattermole
通讯作者：
K. W. Cattermole
影响因子：
5.4
作者：
Meignen, Sylvain;Oberlin, Thomas;McLaughlin, Stephen
通讯作者：
McLaughlin, Stephen
影响因子：
3.3
作者：
TANER, MT;KOEHLER, F;SHERIFF, RE
通讯作者：
SHERIFF, RE
影响因子：
5.4
作者：
Oberlin, Thomas;Meignen, Sylvain;Perrier, Valerie
通讯作者：
Perrier, Valerie