Co-prime array robust adaptive beamforming method based on interference covariance matrix reconstruction

An adaptive beam, interference covariance technology, applied in space transmit diversity, radio transmission systems, electrical components, etc.

Active Publication Date: 2020-04-21
UNIV OF SCI & TECH OF CHINA
View PDF5 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, adaptive beamforming methods that take into account

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
  • Co-prime array robust adaptive beamforming method based on interference covariance matrix reconstruction
  • Co-prime array robust adaptive beamforming method based on interference covariance matrix reconstruction
  • Co-prime array robust adaptive beamforming method based on interference covariance matrix reconstruction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0047] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0048] Embodiments of the present invention provide a method for reconstructing a more accurate interference-plus-noise covariance matrix based on semi-positive definite constraints and obtaining a higher degree of freedom based on a virtual uniform matrix, making full use of the advantages of the mutual prime matrix formation, and at the same time Enhance the robustness of the beamformer in case of arbitrary errors. Such as figure 1 As shown, the method mainly...

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 co-prime array robust adaptive beamforming method based on interference covariance matrix reconstruction. The method comprises the following steps of reconstructing a sampling covariance matrix on the virtual uniform matrix, removing expected signal components in the sampling covariance matrix by using projection, estimating accurate power and direction of each interference according to semi-positive qualitative constraints, reconstructing an interference covariance matrix, estimating noise power in a noise angle area, and obtaining an interference and noise covariance matrix; and taking the main characteristic value of the reconstructed expected signal covariance matrix as an expected signal steering vector, thereby obtaining a weight vector of the robust adaptive beamformer based on the co-prime matrix, and forming the output of the robust adaptive beamformer.

Description

technical field [0001] The present invention relates to the research field of beamforming in the field of array signal processing, in particular to a robust adaptive beamforming method based on interference covariance matrix reconstruction, especially in non-ideal situations where various errors may exist , and when the number of interferences may exceed the number of array elements, the robustness of adaptive beamforming under various errors can be greatly improved through the precise reconstruction of the interference plus noise covariance matrix by taking advantage of the structural advantages of the mutual prime array sex. Background technique [0002] Recently, a series of robust adaptive beamforming methods based on uniform linear arrays have been proposed. In order to satisfy the Nyquist sampling theorem, the array element spacing of uniform arrays is equal to half the wavelength, so the array aperture is directly determined by the number of array elements. In additi...

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): H04B7/0408H04B7/06
CPCH04B7/0408H04B7/0617
Inventor 叶中付孙思聪朱星宇
Owner UNIV OF SCI & TECH OF CHINA
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