High-precision automatic microseism P wave seismic phase first arrival pickup method

An automatic picking, high-precision technology, applied in the field of information processing, can solve the problems of poor real-time algorithm and low precision, achieve good technical value and application prospects, high calculation accuracy, and strong real-time algorithm

Inactive Publication Date: 2014-08-20
SHANDONG UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
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Benefits of technology

This patented technology can improve noise reduction by making it better than existing methods that only work for short periods or at specific times during an audio recording session. It also provides accurate calculations with fast algorithms over time.

Problems solved by technology

This patented describes a technique called Microseismics that can be used to monitor underground conditions like tsunamis or explosions caused by fires. However, it struggles with accurate detection due to variations between short and longer wavelengths from these sources. To address this problem, there have been developed methods based on specific properties of microscope data including linear filtering techniques, Fourier transformation algorithms, and spectral analysis. These solutions aimed towards improving the efficiency and effectiveness of detecting events associated with mineral deposits.

Method used

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  • High-precision automatic microseism P wave seismic phase first arrival pickup method
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  • High-precision automatic microseism P wave seismic phase first arrival pickup method

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Embodiment Construction

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0040] The description of the algorithm idea of ​​the present invention is as follows: the Hilbert transform of the microseismic signal x(t), the Hilbert transform is specifically the convolution of the microseismic signal x(t) and the reciprocal of time, through envelope analysis and reference of pre-picked values, combined with the AIC function Data analysis, and then accurate and automatic picking of the first arrival of the microseismic P wave seismic phase.

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Abstract

The invention provides a high-precision automatic microseism P wave seismic phase first arrival pickup method. The method comprises the following steps of Hilbert conversion of a microseism signal, envelopment analysis of a Hilbert envelopment signal; pre-pickup of microseism P wave seismic phase first arrival, accurate calculation of the microseism P wave seismic phase first arrival and ending of automatic pickup of the microseism P wave seismic phase first arrival. The high-precision automatic microseism P wave seismic phase first arrival pickup method has the advantages of being good in anti-noise performance, high in calculation precision, high in algorithm real-time performance and the like, and has good technological value and application prospects.

Description

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Claims

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Application Information

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Owner SHANDONG UNIV OF SCI & TECH
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