Noise suppression method and system
A technology for noise suppression and additive white noise, which is applied in the field of noise suppression methods and systems, and can solve problems such as inaccurate results, low efficiency, and inability to remove additive white noise.
Active Publication Date: 2016-06-29
INSPUR BEIJING ELECTRONICS INFORMATION IND
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Problems solved by technology
However, the existing ICA algorithm cannot remove the additive white noise in the observation signal, and the noise removal efficiency is low; and the premise of the ICA algorithm is that "the noise (additive white noise, etc.) There is additive white noise in the middle, and additive white noise will affect the ICA algorithm, making the result inaccurate
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[0062] The core of the present invention is to provide a noise suppression method and system, which can not only remove the noise source signal, but also remove the additive white noise in the observation signal, and the efficiency of noise removal is high; and it can avoid the impact of additive white noise on independent component analysis. Handle the impact with high accuracy.
[0063] 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 persons of ordinary skill in the art without making creative efforts belong to the prot...
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The invention discloses a noise suppression method. The method includes: M observation signals received by M detectors are obtained; each observation signal is formed by N source signals independent from each other; M and N are both positive integers; additive white noise removal processing of the M observation signals is performed, and the M observation signals after the removal of additive white noises are obtained; independent component analysis processing of the M observation signals after the removal of the additive white noises is performed, and N source signals separating from each other are obtained; and noise source signals are removed from the N source signals separating from each other, and effective signals are obtained. According to the method, the noise source signals can be removed, the additive white noises in the observation signals can also be removed, the efficiency of removing the noises is high, the influence of the additive white noises on the independent component analysis processing can be avoided, and the accuracy is high. The invention also discloses a noise suppression system.
Description
technical field [0001] The invention relates to the technical field of seismic exploration, in particular to a noise suppression method and system. Background technique [0002] As the goal of seismic exploration gradually shifts to deep underground areas and complex surface areas, higher requirements are put forward for seismic data processing technology. In seismic exploration, due to the influence of a large number of high-voltage transmission lines around the acquisition environment, the observation signals received by the ground geophone include not only effective waves, but also many alternating current interference waves and various noises, which seriously affect seismic exploration. Therefore, it is necessary to filter out AC interference waves and noise signals. [0003] Since the effective wave and AC interference wave in the observation signal received by the ground geophone are independent source signals, the ICA (independent component analysis) algorithm is oft...
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Login to View More IPC IPC(8): G01V1/36
CPCG01V1/36
Inventor 高亚力
Owner INSPUR BEIJING ELECTRONICS INFORMATION IND