Method for passively positioning point sound source based on spatial ten-element array

A positioning method and point sound source technology, applied in the field of perception and testing, can solve the problems of sudden error, inability to locate and locate, and reduction of sensor nodes, and achieve the effects of reduced density, high positioning accuracy, and reduced cost

Inactive Publication Date: 2014-01-22
BEIJING INSTITUTE OF TECHNOLOGYGY
View PDF1 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above problems, the present invention provides a method for passive sound localization of a point sound source based on a spatial ten-element array. The method obtains the pitch angle, azimuth angle and polar radius (sound path) of the sound source under spherical coordinates respectively, Then convert it into the coordinates in the XYZ rect

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
  • Method for passively positioning point sound source based on spatial ten-element array
  • Method for passively positioning point sound source based on spatial ten-element array
  • Method for passively positioning point sound source based on spatial ten-element array

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0023] figure 1 It is a schematic diagram of the node arrangement of the space ten-element array of the point sound source passive sound localization method based on the space ten-element array of the present invention. like figure 1 As shown, the space ten-element array of the present invention includes 10 sensor nodes, each node has an acoustic sensor, an acoustic signal trigger time acquisition device, a corresponding processing and control circuit, a power supply, and a wired / wireless data transceiver module. The ten-element array consists of two parts: the central array and the peripheral array. The central array includes the first node, the second node, the third node, the fourth node and the fifth node, and the peripheral array includes the 0th node, the sixth node and the sixth node. node, 7th node, 8th node and 9th node; place the 0th node at the coordinate origin of the established XYZ rectangular coordinate system, and the 7th node, 3rd node, 5th node and 9th node ...

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 method for passively positioning a point sound source based on a spatial ten-element array and belongs to the technical field of sensing and test. The method for passively positioning the point sound source comprises the following steps: calculating a corresponding arrival time difference through all the nodes of a central base array of the spatial ten-element array, and then utilizing the arrival time difference to calculate the pitch angle and the azimuth angle of the point sound source; calculating a corresponding arrival time difference through all the nodes of a peripheral base array of the spatial ten-element array, and then utilizing the arrival time difference to calculate the sonic path distance information of the point sound source; finally calculating the coordinates of the point sound source according to the obtained pitch angle, the azimuth angle and the sonic path distance information. The method for passively positioning the point sound source prevents the condition that the sound source cannot be positioned or a positioning error suddenly changes due to a special sound source position and has the advantages of high precision and strong practicability.

Description

technical field [0001] The invention belongs to the technical field of perception and testing, in particular to a point sound source passive sound localization method based on a spatial ten-element array. Background technique [0002] Existing passive acoustic positioning technologies are generally divided into three categories: (1) Steerable beamforming technology based on maximum output power; (2) High-resolution spectral estimation technology; (3) Time Difference of Arrival (TDOA) based technology. Arrival) positioning technology. Compared with the previous two methods, which are complex in theory and require a large amount of calculation, TDOA technology has the characteristics of simplicity, practicality, and small amount of calculation, and has been widely used. [0003] However, the traditional TDOA-based passive sound localization algorithm directly calculates the sound path difference Δr between the target and the two measurement elements according to the TDOA meas...

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): G01S5/22
CPCG01S5/22
Inventor 宋萍赵海磊崔林林武江鹏郝创博杨诚
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap