Accurate Method for Picking Up the First Arrival Time of Microseismic Signals Based on Entropy Theory
| Autor: | Ao Sun, Hao Chen, Bao-xin Jia, Feng-pu Liu, Yi-shan Pan |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Microseism
Noise immunity Article Subject 0211 other engineering and technologies 02 engineering and technology 010502 geochemistry & geophysics 01 natural sciences Arrival time Amplitude lcsh:TA1-2040 Random noise Entropy (information theory) Pickup lcsh:Engineering (General). Civil engineering (General) Algorithm 021101 geological & geomatics engineering 0105 earth and related environmental sciences Civil and Structural Engineering Mathematics |
| Zdroj: | Advances in Civil Engineering, Vol 2019 (2019) |
| ISSN: | 1687-8086 |
| DOI: | 10.1155/2019/6074781 |
| Popis: | The entropy method describes the change in the signal state from a macroscopic angle and weakens the interference generated by random noise. From the angle of chaos, which describes the first arrival of microseismic signals, it predicts the trend of noise entropy based on the grey theory. The results indicate that the entropy method is sensitive to amplitude, frequency, and seismic phase changes. Compared with traditional methods, the entropy method has better noise immunity. In terms of the influence of the pickup parameter on the resulting error, the entropy method demonstrated the best result and produces the smallest error. |
| Databáze: | OpenAIRE |
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