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

Frequency diverse array based mutual coupling array DOA estimation method

A technology of frequency control array and DOA, which is applied in the field of mutual coupling array DOA estimation based on frequency control array, can solve the problems of failure of MUSIC algorithm and ESPRIT algorithm, and achieve excellent performance, high angle measurement accuracy, and good estimation performance

Active Publication Date: 2019-08-09
TIANJIN UNIV
View PDF5 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This technology improves angular measurements with high precision but also keeps good results even if there're significant interference between neighboring elements or other components within an antenna system.

Problems solved by technology

This patented technology describes various techniques used to estimate the orientation/direction of multiple objects simultanously without being affected by interference caused by neighboring devices' electromagnetic fields. These methods include coherence analysis, wavelets transform, partial element decomposition, etc. However, there have also been attempts at solving this challenge.

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
  • Frequency diverse array based mutual coupling array DOA estimation method
  • Frequency diverse array based mutual coupling array DOA estimation method
  • Frequency diverse array based mutual coupling array DOA estimation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0059] The invention belongs to the field of array signal processing. According to the characteristics of the angle-distance correlation of the frequency-controlled array array, the output signal of the uniform line array under the consideration of mutual coupling is analyzed and reconstructed, and the sparsely reconstructed parameter estimation framework is applied. In terms of mutual coupling DOA (Direction of Arrival, direction of arrival) estimation, the DOA estimation of the far-field narrowband signal is completed.

[0060] First, based on a uniform linear array to generate a frequency control array signal with a uniform frequency difference, then a selection matrix is ​​constructed to truncate the received data by using the symmetric Toeplitz structure of the mutual coupling matrix (Mutual Coupling Matrix, MCM), so that the remaining data has a cyclic mutual Coupling coefficient. Then, new steering vectors for the truncated data are obtained by including the unknown mut...

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 a frequency diverse array based mutual coupling array DOA estimation method, belongs to the field of array signal processing, and aims at providing a super-resolution DOA estimation algorithm of a far-field narrowband source. A frequency diverse array signal in uniform frequency difference is generated based on a uniform linear array, a selection matrix is constructed froma symmetric Toeplitz structure of an MCM (Mutual Coupling Matrix) to intercept reception data, so that residual data has a circulated mutual coupling coefficient; the unknown mutual coupling coefficient is included by a source part to obtain a new guiding vector of interception data; singular value decomposition SVD is carried out on a received signal; and the guiding vector is parameterized anda sparse reconstruction theory is used to construct a sparse complete and a convex optimization solution function, and the precision of an estimation result is improved. The method is mainly applied to design and manufacture of a frequency diverse array radar.

Description

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

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
Owner TIANJIN 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