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

Small-scale array direction finding method based on bionic technology

A small-scale, array technology, applied in direction finders using electromagnetic waves, direction finders using ultrasonic/sonic waves/infrasonic waves, and orientators for measuring directions, etc., can solve the problem of poor mobility and concealment of equipment, unfavorable installation and deployment , large array size and other issues, to achieve the effect of reducing the size of the array and improving the installation

Inactive Publication Date: 2019-06-25
SOUTHWEST CHINA RES INST OF ELECTRONICS EQUIP
View PDF3 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, no matter what estimation method is used, the distance between adjacent elements of the array antenna must satisfy the half-wavelength array principle, and in order to obtain higher array gain and angular resolution, the number of array elements is generally large, and the array size is very large. It is not conducive to installation and deployment, and the mobility and concealment of equipment are poor

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
  • Small-scale array direction finding method based on bionic technology
  • Small-scale array direction finding method based on bionic technology
  • Small-scale array direction finding method based on bionic technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0045] The present invention will be further described below in conjunction with the accompanying drawings.

[0046] A small-scale array direction finding method based on bionic technology, including the following processes:

[0047] (1) Set the number of array elements, the spacing of array elements, and the regularity of array arrangement to obtain the basic formation;

[0048] Such as figure 1 As shown, in this embodiment, the five-star array is selected as the basic formation, and the system can realize 360-degree omnidirectional direction finding. The number of array elements is M, and the distance between adjacent array elements on each arm is d; the number of each array element is shown in the figure, and the coordinates of each basic array element can be written according to the array arrangement rule and the array element spacing:

[0049] x ij=i*d*cos(π / 10+(j-1)*2*π / 5)

[0050] the y ij =i*d*sin(π / 10+(j-1)*2*π / 5)

[0051] Where i=1, 2...n; j=1, 2...5; d is the ...

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 relates to the technical field of array signal processing, and discloses a small-scale array direction finding method based on a bionic technology. The method comprises the steps that the number of array elements, the spacing of array elements and the array formation rule are set to acquire a basic array; a coupling unit is set to comprise multiple input signals, and the coupling unit is equivalent to a mechanical model, and then is converted into a circuit model to acquire a coupling circuit; the parameters of the coupling circuit are determined through simulation; the output signals of the array elements are input into the coupling circuit, and the amplitude difference of a number of signals of the basic array is amplified by the coupling circuit; the output signals of thearray elements are converted into digital signals by AD sampling after passing through a coupling structure, and the digital signals are uploaded to a processor; array signal processing is completed in the processor; and the target orientation is estimated. According to the invention, high-precision direction finding of a small-scale basic array is realized under the condition of high signal-to-noise ratio; the size of the basic array is greatly reduced; and the flexibility, maneuverability and concealability of installation and deployment of an array direction finding system are improved.

Description

technical field [0001] The invention relates to the technical field of array signal processing, in particular to a small-scale array direction finding method based on bionic technology. Background technique [0002] With the development of science and technology, array signal processing technology has always been the focus of academic research, and the research results have been widely used in many fields such as radar, sonar, wireless communication, astronomy, biomedicine, geological survey and navigation. The DOA estimation technology derived from the field of array signal processing plays an important role in both military and civilian fields. [0003] The DOA estimation method mainly receives the incoming wave signal through the array antenna combined according to certain rules, and estimates the direction of the outgoing wave according to the time delay between the received signal of different array elements and the reference array element. This method generally assume...

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
Patent Type & Authority Applications(China)
IPC IPC(8): G01S3/48G01S3/78G01S3/80
Inventor 夏碧君刘江肖开奇向龙凤曾跃胜樊博宇
Owner SOUTHWEST CHINA RES INST OF ELECTRONICS EQUIP
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