Reconstruction robust beam forming method based IAA interference plus noise covariance matrix

A technology of covariance matrix, interference and noise, which is applied in the field of antenna beamforming, can solve the problems that the low number of snapshots has too much influence on the performance of the algorithm and affects the performance of the beamformer, etc.

Active Publication Date: 2018-10-16
XIDIAN UNIV
View PDF17 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In 2003, Vorobyov proposed the worst performance optimization algorithm, which constrains the mismatched signal steering vector in a spherical uncertainty set, and transforms the problem of solving the adaptive weight vector into a second-order cone programming problem , can maintain a certain robustness within a certain range of steering vector mismatch, but the selection of the

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
  • Reconstruction robust beam forming method based IAA interference plus noise covariance matrix
  • Reconstruction robust beam forming method based IAA interference plus noise covariance matrix
  • Reconstruction robust beam forming method based IAA interference plus noise covariance matrix

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0062] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to 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.

[0063] refer to figure 1 , is a flow chart of a method for reconstructing a robust beamforming method based on an IAA-based interference-plus-noise covariance matrix of the present invention; the method for reconstructing a robust beamforming method based on an IAA-based interference-plus-noise covariance matrix comprises the following steps:

[0064] Step 1, determine the uniform line array, the uniform line array includes N array elements, obtain the echo da...

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 belongs to the technical field of antenna beam forming, and discloses a reconstruction robust beam forming method based on IAA interference plus noise covariance matrix. The method comprises the following steps of: firstly, estimating the direction of a signal more accurately in an iterative mode by using IAA method, then selecting the characteristic vector with the maximum correlation with the steering vector calculated by using the estimated direction of the desired signal from sampling covariance matrix characteristic vectors and rejecting the characteristic vector from the sampling covariance matrix, finally, selecting a proper diagonal loading factor to carry out diagonal loading on the matrix in order to prevent the covariance matrix after rejecting the signal from generating singular, in the case that the sample contains the desired signal, the signal to noise ratio of a self-adaptive beam former is improved and the robust performance of the self-adaptive beam former is improved in the case of a mismatch steering vector.

Description

technical field [0001] The invention belongs to the technical field of antenna beamforming, in particular to an IAA (Iterative Adaptive Approach, Iterative Adaptive) based interference-plus-noise covariance matrix reconstruction robust beamforming method, which is suitable for solving the problem of self-adaptation caused by strong expected signal power in sampling samples The beamformer output signal-to-interference-noise ratio declines, and the adaptive beamformer has good robust performance in the case of steering vector mismatch. Background technique [0002] Adaptive beamforming technology is an important research direction in the field of array signal processing. Compared with the traditional single antenna, the antenna array can calculate the weighting factors on each array element through an adaptive algorithm according to the change of the signal environment, so as to perform spatial filtering on the signal received by the array, so that the formed beam points to th...

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): G01S7/41
CPCG01S7/41
Inventor 王彤解彩莲任兵
Owner XIDIAN UNIV
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