CAJ | 학술논문

由于不同时频分析方法有其特有时频特性,为提高煤田地震资料处理精细程度,对比研究选择最佳方法十分重要.针对短时傅氏变换、小波变换、S变换,Wigner-Ville分布及其改进分布和Choi-Williams分布等几种经典时频分析方法,进行数值模拟研究,分别从时间分辨率、频率分辨率及干扰项影响程度等详细分析了各种方法的优缺点.最后选用SPWVD进行初至拾取和S变换分频显示解释陷落柱,取得了良好的效果.
유우불동시빈분석방법유기특유시빈특성,위제고매전지진자료처리정세정도,대비연구선택최가방법십분중요.침대단시부씨변환、소파변환、S변환,Wigner-Ville분포급기개진분포화Choi-Williams분포등궤충경전시빈분석방법,진행수치모의연구,분별종시간분변솔、빈솔분변솔급간우항영향정도등상세분석료각충방법적우결점.최후선용SPWVD진행초지습취화S변환분빈현시해석함락주,취득료량호적효과.
In the light of the characteristic time-frequency properties of different time-frequency analysis methods, it is important to select an optimal time-frequency analysis method for high precision seismic exploration in the coal field on the basis of comparing and studying these methods. Aimed at probing into STFT, Wavelet Transform, S-Transform, Choi-Williams Distribution, Wigner-Ville Distribution and its improved methods, this paper studied advantages and disadvantages of every method through numerical simulation in time resolution, frequency resolution and interference. The First Break Picking and Separate Frequency Display for Collapse Column interpretation were realized by SPWVD and S-Transform, with a good result obtained.