Signal arrival angle estimation method and device of mixed field information source

A technology of angle estimation and mixed field, which is applied in direction finders using radio waves, radio wave direction/deviation determination systems, complex mathematical operations, etc., can solve problems such as signal arrival angle estimation errors, improve estimation accuracy, improve Effects on Reliability and Validity

Pending Publication Date: 2022-06-28
BEIJING UNIV OF POSTS & TELECOMM
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That is to say, the traditional MUSIC method only assumes that the signal source is a far-field signal source, a

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  • Signal arrival angle estimation method and device of mixed field information source
  • Signal arrival angle estimation method and device of mixed field information source
  • Signal arrival angle estimation method and device of mixed field information source

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[0042] In order to make the objectives, technical solutions and advantages of the present application more clear, the present application will be further described in detail below with reference to the embodiments and the accompanying drawings. Here, the exemplary embodiments and descriptions of the present application are used to explain the present application, but are not intended to limit the present application.

[0043] Here, it should also be noted that, in order to avoid obscuring the present application due to unnecessary details, only the structures and / or processing steps closely related to the solution according to the present application are shown in the drawings, and the related structures and / or processing steps are omitted. Other details not relevant to this application.

[0044] It should be emphasized that the term "comprising / comprising" when used herein refers to the presence of a feature, element, step or component, but does not exclude the presence or add...

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Abstract

The invention provides a signal arrival angle estimation method and device for a mixed field signal source, and the method comprises the steps: constructing a fourth-order cumulant matrix which is used for eliminating the influence of a signal source distance for the mixed field signal source in an indoor single-base-station scene; and constructing a MUSIC spectral function based on the fourth-order cumulant matrix, and applying the MUSIC spectral function to obtain an arrival angle estimated value of the signal of the mixed field source to the antenna array for 5G positioning. The method and the device can be effectively applied to an indoor single base station positioning scene, can realize estimation of the signal arrival angle of the mixed field information source comprising the far-field region and the near-field region of the antenna array, and can improve the reliability and the effectiveness of the estimation process of the signal arrival angle of the mixed field information source. And the estimation precision of the signal arrival angle in the mixed field signal source scene can be effectively improved.

Description

technical field [0001] The present application relates to the technical field of 5G positioning, and in particular, to a method and apparatus for estimating the angle of arrival of signals of mixed-field signal sources. Background technique [0002] Using a 5G base station to locate a single base station requires estimating the angle of arrival (AOA) of the signal. The Multiple Signal Classification (MUSIC) algorithm is a commonly used subspace-based signal angle of arrival estimation algorithm. It uses the orthogonality of the received signal steering vector and the noise subspace of the covariance matrix to estimate the signal angle of arrival. . [0003] At present, in the existing MUSIC-based signal arrival angle estimation method, it is necessary to perform cross-correlation matrix operation on the received signal, then construct a MUSIC spectrum based on the cross-correlation matrix, and solve the estimated value of the signal arrival angle of the antenna array. Alth...

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Application Information

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IPC IPC(8): G01S3/14G06F17/16G06F17/15
CPCG01S3/14G06F17/16G06F17/15
Inventor 邓中亮陈鑫宇张智超
Owner BEIJING UNIV OF POSTS & TELECOMM
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