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- W2349049011 abstract "Coherence technique and variance technique are widely used in fracture detection.Although the formulas of the second and third generation coherence algorithm are not complicated,it is not easy to understand how they work in fracture detection.Using the knowledge of rearrangement inequality and matrix analysis,the second and the third generation coherence algorithms are then deeply analyzed and explained respectively,and according to the analysis of the second generation coherence algorithm,the advice for improving performance in the case that the characteristic of underground medium does not change much is suggested. Furthermore,the variance algorithm is also been analyzed and an improved algorithm is introduced to improve the performance when increasing the vertical time window,and after using practical data to test the original variance algorithm and the improved variance algorithm,the effect prove good." @default.
- W2349049011 created "2016-06-24" @default.
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- W2349049011 date "2007-01-01" @default.
- W2349049011 modified "2023-09-23" @default.
- W2349049011 title "An exploration about the mechanism of coherence technique and variance technique for fracture detection" @default.
- W2349049011 hasPublicationYear "2007" @default.
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