Communication method based on directional controllable weak seismic source seismic wave signal

Abstract

The invention relates to a seismic wave communication method, in particular to a communication method based on directional controllable weak seismic source seismic wave signals, and aims to solve the technical problems that detection of weak seismic sources by existing seismic wave communication lacks timeliness, and controllable continuous operation is difficult to realize to realize information coding. The method comprises the following steps: firstly, obtaining template signals of a directional controllable weak seismic source on each sub-table of an ultra-dense array by using a time gain, then carrying out correlation detection on continuous waves of seismic wave communication signals recorded by each sub-table by using the template signals on each sub-table, finally, superposing correlation detection waveforms, and detecting seismic wave communication signals by utilizing the gain in space. According to the method, the seismic wave signals are acquired by using the distributed optical fiber sonic sensor, and the seismic wave communication signals are coded by adopting a seismic wave signal excitation mode of the seismic source array, so that the long-distance instant communication of the seismic wave signals is realized.

Description

technical field [0001] The invention relates to a detection method of seismic wave signals, in particular to a long-distance instant communication method based on directional controllable weak seismic source seismic wave signals. Background technique [0002] Since the seismic wave signal propagates inside the earth, the channel is stable and will hardly be interfered by external man-made, so the communication based on the seismic wave signal has potential application value. However, except for underground explosions, since the strength of artificial vibroseis (such as vibrator vehicles, air gun sources, etc.) is not very strong, the seismic wave signals excited by them are propagated and attenuated inside the earth medium, and the signal waveforms have been submerged when they reach remote stations. In the background noise of the earth, it is difficult to obtain signal information by direct pickup. For example, the air gun source located in Hutubi, Xinjiang, its single-sho...

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Problems solved by technology

[0003] The purpose of the present invention is to solve the technical problem that the existing seismic wave communication lacks timeliness in the detection of weak seismic sources, and it is difficult to realize the controllable continuous operation to realize the coding of information, and propose a communication based on directional controllable weak seismic source seismic wave signals method

The invention solves the problem of long-distance instant communication of seismic wave signals of directional controllable weak seismic sources by using super-dense arrays to measure the superimposed signal gain of related detection waveforms, and improves the information coding efficiency by using the excitation mode of seismic wave signals of directional controllable weak seismic source arrays

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