子波相位不准对叠前波形反演的影响（英文）

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Bibliographic Details
Published in应用地球物理：英文版 Vol. 11; no. 4; pp. 479 - 488
Main Author 骆春妹 王尚旭 袁三一
Format Journal Article
LanguageEnglish
Published 2014
Subjects
叠前反演
子波
相位
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ISSN1672-7975
1993-0658

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Bibliography:Luo Chun-Mei, Wang Shang-Xu, Yuan San-Yi
wavelet;phase;prestack inversion
11-5212/O
Wavelets are critical to inversion methods. Incorrect phase estimation will affect the objective function and cause convergence to local minima, and thus produce biased or incorrect results. Based on two simple models and ignoring all other factors, we studied the variation of the wavelet phase as a function of frequency and its effect on the prestack waveform inversion. Numerical experiments show that an incorrect phase may result in large deviations from the real solution, even if there is a high similarity between the model and real wavelets. The precision of the inversion slightly improves by using the constant-phase rotation; however, the effect of phase inaccuracy is not eliminated, which limits the precision of prestack inversion.
ISSN:1672-7975
1993-0658