Beam forming method and system based on certainty and uncertainty set constraint

A technology to determine sets and beams, applied to radio wave measurement systems, instruments, etc., can solve the problems of reducing the measurement accuracy of array signal processing systems, performance limitations, and poor system robustness

Active Publication Date: 2016-09-07
SHENZHEN UNIV
View PDF2 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a beamforming method and system based on definite and uncertain set constraints, aiming at solving the problem that the beamforming metho...

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
  • Beam forming method and system based on certainty and uncertainty set constraint
  • Beam forming method and system based on certainty and uncertainty set constraint
  • Beam forming method and system based on certainty and uncertainty set constraint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0065] In order to make the object, technical solution and effect of the present invention more clear and definite, the present invention will be further described in detail below. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0066] The present invention also provides a flow chart of a preferred embodiment of a beamforming method based on definite and uncertain set constraints, as shown in figure 1 As shown, among them, the methods include:

[0067] Step S100, acquiring the signals received by the elements in the antenna array, performing weighted summation on the signals received by the elements to obtain the output of beamforming;

[0068] Step S200, perform array covariance matrix estimation according to several samples in the beamforming process, perform modeling according to the objective function of the estimated array covariance matrix, and obtain modeled uncer...

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 beam forming method and system based certainty and uncertainty set constraint, and the method comprises the steps: obtaining signals received by array elements in an antenna array, carrying out the weighted summation of the signals received by the array elements, and obtaining wave forming output; carrying out array covariance matrix estimation according to a plurality of samples in a beam forming process, carrying out modeling according to a target function of an estimated array covariance matrix, and obtaining an uncertainty set constraint condition after modeling; converting uncertainty set constraint into certainty set constraint according to a Bern-type inequality; converting a target function into a semi-definite programming function according to a semi-definite relaxation algorithm; solving a semi-definite programming function according to a convex optimization algorithm, and outputting solved beam forming. The method enables the probability constraint condition of a random process into a certainty constraint condition, converts a semi-definite programming problem into the optimization of the target function, irons out the severe defect that an array covariance matrix has an error in a conventional method, and improves the robustness of the system.

Description

technical field [0001] The invention relates to the field of beamforming in array signal processing, in particular to a beamforming method and system based on certain and uncertain set constraints. Background technique [0002] The array signal processing system is widely used in sonar, spaceflight and radar and other fields, and it includes two core technologies: parameter estimation and beamforming. Adaptive beamforming technology still faces many practical problems from theoretical knowledge to engineering application. Among them, the robust performance of the adaptive beamforming algorithm in the case of errors directly affects the actual application effect. At the same time, the uncertainties in the actual environment also have a serious impact on the adaptive beamforming technology, such as sensor position disturbance, local scattering, mutual coupling, and steering vector mismatch. Aiming at the problem of robust adaptive beamforming under uncertain set constraints,...

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): G01S7/02
CPCG01S7/02
Inventor 廖斌郭重涛黄磊杨丽鲜黄辉平王佳佳
Owner SHENZHEN 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