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Time-frequency method, module and device for eliminating cross interference of signals and storage device thereof

A technology for cross-interference and signal elimination. It is applied to pattern recognition in signals, character and pattern recognition, instruments, etc. It can solve problems such as multi-component signal interference and achieve the effect of eliminating signal cross-interference.

Inactive Publication Date: 2017-12-19
CHINA UNIV OF GEOSCIENCES (WUHAN)
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Problems solved by technology

The Wigner-Ville distribution can well describe the time-frequency characteristics of the signal, but it produces unexplainable and difficult-to-suppress so-called "cross-term interference" for multi-component signals

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  • Time-frequency method, module and device for eliminating cross interference of signals and storage device thereof
  • Time-frequency method, module and device for eliminating cross interference of signals and storage device thereof
  • Time-frequency method, module and device for eliminating cross interference of signals and storage device thereof

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Embodiment Construction

[0015] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the following will further describe the embodiments of the present invention in conjunction with the accompanying drawings. The specific technical details mentioned below, such as methods, equipment, etc., are only for better readers. Understanding the technical solution does not mean that the present invention is limited to the following technical details.

[0016] The first embodiment of the present invention provides a time-frequency method, module, device and storage device for eliminating signal cross-interference, which can suppress the "cross-term" interference in the signal to achieve the filtering effect, thereby achieving the effect of filtering non-linear and non-stationary Time-frequency analysis of the signal. Specifically, it will be explained with an example in which the acquired signal is a seismic wave. See figure 1 , figure 1 It is a flowchart of the st...

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Abstract

The invention provides a time-frequency method, module and device for eliminating cross interference of signals and a storage device thereof. The time-frequency method for eliminating cross interference of signals comprises the following steps of: acquiring a target signal by a signal acquisition device; decomposing the target signal by a signal decomposition device so as to obtain application data; and processing the application data by an application data processing device so as to obtain a signal result. The module for eliminating cross interference of signals comprises a signal acquisition module, a signal decomposition module and an application data processing module; the device for eliminating cross interference of signals comprises a signal acquisition device, a signal decomposition device and an application data processing device; and the modules and the devices are jointly used for realizing the time-frequency method for eliminating cross interference of signals. The storage device is used for storing to-be-stored data, program codes and the like, and is used for realizing the time-frequency method for eliminating cross interference of signals. Through inhibiting cross terms in signals, a filter effect is achieved, so that time-frequency analysis for nonlinear and non-stationary signals is realized.

Description

Technical field [0001] The invention relates to the field of time-frequency analysis of non-stationary signals, in particular to a time-frequency method, module, device and storage device for eliminating signal cross interference. Background technique [0002] Time-frequency analysis is a powerful tool for analyzing time-varying non-stationary signals. It is a hotspot in modern signal processing research and an emerging signal processing method. The most typical is the Wigner-Ville distribution (WVD). WVD is a quadratic transformation, that is, multiplying a certain time signal in the past by a certain time signal in the future, and then calculating the Fourier transform of the two time differences. The Wigner-Ville distribution can well describe the time-frequency characteristics of a signal, but it produces unexplainable so-called "cross-term interference" for multi-component signals. In the theoretical research and engineering application of digital signal processing, express...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00
CPCG06F2218/04
Inventor 郝国成吴敏吕炎伟赵娟杨越王巍
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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