A device and method for two-dimensional direction of arrival estimation based on L-shaped array

A technology of direction estimation and two-dimensional waves, which is applied to radio wave direction/deviation determination systems, direction finders using radio waves, and components of radio wave directors, etc., which can solve poor estimation performance, large error in estimation performance, high complexity problems

Inactive Publication Date: 2011-12-14
XI AN JIAOTONG UNIV
View PDF2 Cites 20 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the structures and methods currently used are based on two-dimensional sensor arrays composed of two or more linear arrays. These sensor arrays with specific structures can obtain two-dimensional space direction of arrival estimates through the one-dimensional direction of arrival estimation method. But these methods require pairing of elevation and azimuth angles; pairing is still required even if the propagation algorithm is modified based on eigenvalue decomposition
In addition, although the method based on singular value decomposition can realize the automatic pairing process of two-dimensional DOA, however, even in the case of uncorrela

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 device and method for two-dimensional direction of arrival estimation based on L-shaped array
  • A device and method for two-dimensional direction of arrival estimation based on L-shaped array
  • A device and method for two-dimensional direction of arrival estimation based on L-shaped array

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0039] The present invention will be described in more detail below in conjunction with the accompanying drawings and embodiments.

[0040] Such as figure 1 and figure 2 As shown, the device for estimating the two-dimensional direction of arrival based on the L-shaped array includes a rectangular L-shaped array antenna. The rectangular L-shaped array antenna is one end of the linear sub-array antenna 1 equidistant in the longitudinal x direction and the One end of the z-direction equidistant linear sub-array antenna 2 is vertically connected, wherein the longitudinal x-direction equidistant linear sub-array antenna 1 includes first longitudinal x-direction antenna elements x arranged in pairs equidistant along the longitudinal x direction 1 , the second longitudinal x-direction antenna element x 2 ,..., the Mth vertical x-direction antenna element x M It consists of a total of M antenna elements, and the linear sub-array antenna 2 equidistant in the vertical z direction in...

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 an L-shaped array-based two-dimensional wave arrival direction estimating device and a method thereof. The method comprises the following steps of: acquiring cross correlation matrixes by using a right angle folding ruler L-shaped array antenna which is formed by vertically connecting one end of an equal-distance linear sub-array antenna in a longitudinal direction x withone end of an equal-distance linear sub-array antenna in a vertical direction z, and according to observation data which is acquired from the equal-distance linear sub-array antenna in the longitudinal direction x and the equal-distance linear sub-array antenna in the vertical direction z; independently acquiring an azimuth angle estimation value and an elevation angle estimation value through linear operation; and automatically accomplishing the process of matching an azimuth angle with an elevation angle by minimizing an azimuth angle and elevation angle cost function. Thus, the characteristic value decomposition process is avoided, complexity is reduced, a few estimation errors are generated, and precision is high.

Description

technical field [0001] The present invention relates to a device and method for two-dimensional direction of arrival, in particular to a device and method for estimating two-dimensional direction of arrival based on an L-shaped array. Background technique [0002] Array signal processing has developed rapidly in recent years, and its applications involve many military and national economic fields such as radar, communication, and sonar. It arranges multiple antenna elements at different positions in space to form an antenna array, and uses this antenna array to receive and process space radio waves, and extract the radio wave signals received by the array and their characteristic information. Array signal processing has the characteristics of flexible beam steering, high signal gain, strong anti-interference ability and high spatial super-resolution ability, etc., which has attracted people's attention and is more and more widely used. [0003] A typical problem to be solve...

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): G01S3/12G01S3/14
Inventor 王光敏辛景民陶浩郑南宁
Owner XI AN JIAOTONG 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