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Method and device for locating earthquake source based on multi-vibration sensor

A vibration sensor and seismic source positioning technology, which is applied in the direction of seismic signal processing, etc., can solve the problems of low stability and accuracy of the geometrical seismic source positioning method, inaccurate arrival time of vibration waves, uneven propagation medium, etc., and achieve high precision And the effects of high stability, reducing errors, and reducing the amount of calculation

Active Publication Date: 2019-05-31
FATRI XIAN TESTING & CONTROL TECH CO LTD
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Problems solved by technology

[0003] In view of this, the embodiment of the present invention provides a seismic source location method and device based on a vibration sensor to solve the problems caused by the inaccurate arrival time of vibration waves and uneven propagation medium, which lead to the stability and accuracy of the current geometric source location method. low sex problem

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  • Method and device for locating earthquake source based on multi-vibration sensor
  • Method and device for locating earthquake source based on multi-vibration sensor
  • Method and device for locating earthquake source based on multi-vibration sensor

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Embodiment Construction

[0022] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention.

[0023] An embodiment of the present invention provides a seismic source positioning method based on a vibration sensor, which can be applied to seismic source positioning in a ground area, such as figure 1 As shown, the source location method includes the following steps:

[0024] Step S101: Plan the positioning area according to actual needs, and establish ...

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Abstract

The invention discloses a method and a device for locating an earthquake source based on a multi-vibration sensor. The method comprises the steps of: according to a location area, establishing a coordinate system; according to the propagation wave velocity of the vibration wave in the location area, calculating the propagation time between any two grid points of the vibration wave in coordinate system grids, and establishing an arrival time model according to the propagation time; obtaining vibration signals of the vibration wave collected by a plurality of sensor at the location area; according to the arrival time model, employing first sliding window processing for the vibration signal of each grid point in the coordinate system grids collected by the sensors to calculate the intensity function of each grid point at the time of occurrence of the vibration wave, and performing intensity function smoothness processing to obtain a first intensity function; determining the value of the first intensity function of each grid point; and determining the grid point corresponding the first intensity value with the maximum value as the position of the earthquake source.

Description

technical field [0001] The invention relates to the technical field of sensor positioning, in particular to a vibration sensor-based seismic source positioning method and device. Background technique [0002] At present, the most widely used seismic source location method based on vibration sensor is the main analytical geometry method, mainly TOA (time of arrival), TDOA (Time Difference Of Arrival) and so on. However, these positioning algorithms mainly rely on obtaining the arrival time of the vibration signal to solve the equations. The core accuracy of its positioning results is to rely on the arrival time and homogeneous medium, and the arrival time is often the first arrival time of the vibration signal. Since the first arrival wave has no characteristic rules, it is difficult to obtain an accurate arrival time with existing methods, and, Due to the error of the position of the first arrival wave, the error of the arrival time is caused. In a heterogeneous medium or i...

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Application Information

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IPC IPC(8): G01V1/28G01V1/30
Inventor 聂泳忠赵阳李红星
Owner FATRI XIAN TESTING & CONTROL TECH CO LTD
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