Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Stochastic resonance enhanced acoustic vector signal orientation method

A stochastic resonance and acoustic signal technology, applied in the field of signal processing, can solve problems affecting orientation accuracy, loss, amplitude gain nonlinear phase change, etc., and achieve good orientation effect and good resistance effect

Active Publication Date: 2019-08-16
NORTHWESTERN POLYTECHNICAL UNIV
View PDF5 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional bistable stochastic resonance system has the problem of amplitude gain nonlinearity and phase change, which will cause tampering or even loss of the orientation information carried by the vector acoustic signal, and affect the orientation accuracy.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Stochastic resonance enhanced acoustic vector signal orientation method
  • Stochastic resonance enhanced acoustic vector signal orientation method
  • Stochastic resonance enhanced acoustic vector signal orientation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0042] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0043] The invention provides a stochastic resonance-enhanced weak target vector acoustic orientation method; the method uses a proposed vector acoustic signal noise reduction processing method suitable for orientation, and can achieve good orientation effect in the case of low signal-to-noise ratio. The invention is mainly applied to the orientation of underwater weak targets in the environment of low signal-to-noise ratio, has good resistance to actual phase difference, and is a robust single-vector hydrophone orientation method.

[0044] Such as figure 1 As shown, the specific implementation process of the vector acoustic signal orientation method enhanced by stochastic resonance is given below.

[0045] Step 1: Collect target sound source vector acoustic signal: p(t), v x (t), v y (t), where p(t) is the sound pressure channel signal, v x (t), v ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a stochastic resonance enhanced acoustic vector signal orientation method. The method can realize amplitude linear gain and is suitable for vector acoustic signal noise reduction processing in orientation, can solve the problem of large vector acoustic orientation error under the condition of low signal-to-noise ratio, and has good orientation effect. The stochastic resonance enhanced acoustic vector signal orientation method is mainly applied to the orientation of an underwater weak target in a low signal-to-noise ratio environment, has good resistance to phase inconsistency of actual vector acoustic signals, and is a stable single-vector hydrophone orientation method.

Description

technical field [0001] The invention relates to the field of signal processing, in particular to a method for estimating the direction of a vector signal. Background technique [0002] my country is a large maritime country. Since the beginning of the new century, my country has faced increasing security threats from the ocean, especially threats from the enemy's underwater submarines. The detection and direction estimation of submarines is an important technology related to coastal defense security. With the vigorous development of stealth technology by various military powers in the world, the radiation noise of submarines and other underwater equipment has been greatly reduced in the higher frequency bands, which is basically close to the noise level of the marine environment, making it increasingly difficult to detect and locate submarines. In order to effectively detect and locate weak underwater targets such as submarines, low frequency / very low frequency signals are i...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01S3/86G01S3/80
CPCG01S3/86G01S3/8003
Inventor 王海燕锁健董海涛申晓红马石磊张红伟
Owner NORTHWESTERN POLYTECHNICAL UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com