| 用样点加密和补零充位提高频谱分辨率 |
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| 引用本文： | 撒利明.用样点加密和补零充位提高频谱分辨率[J].西南石油大学学报（自然科学版）,1991,13(1):23-28. |
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| 作者姓名： | 撒利明 |
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| 作者单位： | 西北地质研究所计算中心 |
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| 摘 要： | 在地震数据处理中,频谱分析是不可缺少的重要环节。PE—3284机TRAFO模块是采用FFT算法进行频谱分析的。由于频谱的分辨率与被处理的时窗长度成正比,当时窗长度小于2000ms时,分辨率很低,不能用于实际生产。本文提出用样点加密和补零充位的方法提高频谱分辨率,效果明显,方法简单,对时窗长度大于75ms的谱分析,完全能满足实际处理需要。
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| 关 键 词： | 地震数据处理 频谱分析 样点加密和补零充位法 |
| 收稿时间： | 1989-09-04 |
MAKING HIGHER THE RESOLUTION OF FREQUENCY SPECTRUM BY INTERPOLATING SAMPLES AND SETTING THE VALUE OF INTERPOLATING SAMPLES TO ZERO |
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| Sa Liming.MAKING HIGHER THE RESOLUTION OF FREQUENCY SPECTRUM BY INTERPOLATING SAMPLES AND SETTING THE VALUE OF INTERPOLATING SAMPLES TO ZERO[J].Journal of Southwest Petroleum University(Seience & Technology Edition),1991,13(1):23-28. |
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| Authors: | Sa Liming |
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| Institution: | Computing Centre of Geology Research Institute in Northwest of China |
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| Abstract: | The analysis of frequency spectrum is an important link in seismic data processing. The algorithm of FFT(Fast Fourier Transform) is used in the module TRAFO to analyze the frequency spectrum. Its resolution is directly proportional to the length of time window. When the length is smaller than 2000ms, the resolution is too low to be used in processing. A wonderful method of interpolating samples and setting the value of interpolating samples to zero, which makes the resolution higher, is presented in this paper.The resolution of frequency spectrum can certainly meet the needs of the practical processing. |
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| Keywords: | Seismic Data Processing Analysis of Frequency Spectrum Method of Jnferpolating Sampies and Setting the Va |
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