| Effects of Gabor transform parameters on signa time-frequency resolution |
| |
| 基金项目： | This work was funded by National Natural Science Foundation of China-（No. 40474044）. |
| |
| 摘 要： |
|
| 关 键 词： | 时频 分辨率 地震信号 地震勘探 |
| 收稿时间： | 2006-05-23 |
| 修稿时间： | 2006-05-232006-08-26 |
Effects of Gabor transform parameters on signa time-frequency resolution |
| |
| Abstract: | In this paper, it is described that the time-frequency resolution of geophysical signals is affected by the time window function attenuation coefficient and sampling interval and how such effects are eliminated effectively. Improving the signal resolution is the key to signal time-frequency analysis processing and has wide use in geophysical data processing and extraction of attribute parameters. In this paper, authors research the effects of the attenuation coefficient choice of the Gabor transform window function and sampling interval on signal resolution. Unsuitable parameters not only decrease the signal resolution on the frequency spectrum but also miss the signals. It is essential to first give the optimum window and range of parameters through time-frequency analysis simulation using the Gabor transform. In the paper, the suggestions about the range and choice of the optimum sampling interval and processing methods of general seismic signals are given. |
| |
| Keywords: | Gabor transform time-frequency analysis resolution Gaussion window sampling interval |
| 本文献已被 维普 等数据库收录！ |
