Unlock instant, AI-driven research and patent intelligence for your innovation.

A DOA Estimation Method Based on Differential Array Interpolation of Coprime Polarized Array

A differential array and DOA technology, applied in the field of high-precision direction-of-arrival estimation, can solve the problems of lack of partial array element information, virtual differential array array elements and array apertures cannot be fully utilized, and achieve the effect of improving lateral accuracy

Active Publication Date: 2022-05-03
UNIV OF ELECTRONICS SCI & TECH OF CHINA +1
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this algorithm can only be applied to the continuous array elements in the virtual differential array, and there are "holes" in the virtual differential array of the coprime array, that is, the lack of part of the array element information, which leads to the inability between the array elements of the virtual differential array and the array aperture. fully exploited

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
  • A DOA Estimation Method Based on Differential Array Interpolation of Coprime Polarized Array
  • A DOA Estimation Method Based on Differential Array Interpolation of Coprime Polarized Array
  • A DOA Estimation Method Based on Differential Array Interpolation of Coprime Polarized Array

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the implementation methods and accompanying drawings.

[0029]The present invention is proposed to solve the shortcomings in the existing DOA estimation algorithm based on coprime polarized arrays that the array aperture and virtual array elements of the virtual differential array cannot be fully utilized. The method for estimating DOA of a coprime polarized array proposed by the present invention uses a differential array interpolation method to fill holes, so that the complete array aperture of the differential array can be utilized. Firstly, the covariance matrix of the coprime polarized array is calculated by using the observed data. After the covariance matrix is ​​vectorized, the difference array is obtained after de-redundancy and rearrangement; then, the holes on each component in th...

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 discloses a DOA estimation method based on differential array interpolation of a coprime polarized array, belonging to the technical field of wireless mobile communication. The present invention realizes high-precision DOA estimation by using a mutual prime polarization array and a differential array interpolation method, including: firstly, calculating a covariance matrix of a mutual prime polarization array by using observation data. Then, the covariance matrix is ​​column-vectorized and deredundant and element rearranged to obtain a difference array. Afterwards, the differential array interpolation method is used to fill the holes on each component of the differential array, and the covariance matrix corresponding to the differential array without holes on each component is reconstructed; finally, the virtual The covariance matrix of the polarized array is searched using the MUSIC algorithm to obtain the DOA estimate of the incident signal. The invention can utilize all array apertures of the virtual differential array, and has the advantage of high DOA estimation accuracy.

Description

technical field [0001] The invention belongs to the technical field of wireless mobile communication, and in particular relates to a high-precision direction-of-arrival (DOA) estimation technology realized by using a coprime polarized array. Background technique [0002] Signal direction of arrival (DOA) estimation is an important research topic in the field of array signal processing, and plays a very important role in the fields of radar, sonar, wireless communication and earthquake detection. The electromagnetic vector sensor can perceive the complete electric field information and magnetic field information of the electromagnetic signal. Compared with the traditional scalar array, the polarization array composed of electromagnetic vector sensors can provide more accurate DOA estimation by utilizing the polarization information of the signal. Therefore, the problem of DOA estimation based on polarized arrays has received more and more attention in recent years. [0003]...

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 Patents(China)
IPC IPC(8): G01S3/14G06F17/16
CPCG01S3/14G06F17/16
Inventor 符茗铖郑植王文钦
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA