Propagation operator-based 2-L type array two-dimensional DOA estimation algorithm

A technology of estimation algorithm and propagation operator, which is applied in the direction of the directional device, measuring device, instrument, etc., can solve the problem that the antenna element cannot be used, and achieve the effect of low computational complexity

Active Publication Date: 2017-03-22
TIANJIN UNIV
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Problems solved by technology

[0004] In order to overcome the deficiencies of the prior art, the present invention aims to solve the disadvantage that the traditional propagation operator algorithm cannot utilize all antenna array elements, and construct a new propagation matrix

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  • Propagation operator-based 2-L type array two-dimensional DOA estimation algorithm

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Embodiment Construction

[0022] Aiming at the problems existing in the existing DOA estimation algorithm, the present invention proposes a 2-L array two-dimensional DOA estimation algorithm based on a propagation operator, which is characterized in that: the antenna array is a 2-L array, where the x-axis There is a uniform linear array with N array elements on the , y-axis and z-axis respectively, denoted by X, Y, and Z respectively. The element spacing is half the wavelength of the incoming signal.

[0023] The technical scheme adopted in the present invention: the 2-L type array two-dimensional DOA estimation algorithm based on propagation operator, comprises the following steps:

[0024] Step 1: Construct the received signal matrix.

[0025] Taking the array element located at the origin of the coordinates as the reference array element, the signal vectors received by the line array X, Y, and Z are respectively x(t)=[x 1 (t),x 2 (t),...,x N (t)] T , y(t)=[y 1 (t),y 2 (t),...,y N (t)] T and...

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Abstract

The invention relates to the technical field of estimating the signal arrival direction by adopting an array antenna and overcomes the defect in the prior art that the conventional propagation operator-based algorithm cannot utilizes all antenna array elements, wherein a new propagation matrix is constructed. The algorithm solves the angle estimation invalidation problem during the actual mobile communication process with the range of pitch angles to be 70-90 degrees. In this way, the estimation performance for the azimuth angle and the pitch angle is improved. According to the technical scheme of the invention, the propagation operator-based 2-L type array two-dimensional DOA estimation algorithm comprises the steps of 1, constructing a received signal matrix; 2, constructing a propagation matrix; 3, estimating a rotation matrix; 4, estimating the azimuth angle and the pitch angle. The propagation operator-based 2-L type array two-dimensional DOA estimation algorithm is mainly used for the design and the manufacture of infinite detection equipment.

Description

technical field [0001] The invention relates to the technical field of estimating the direction of arrival of received signals by using an array antenna, in particular to a method for estimating the direction of arrival of signals by using a 2-L antenna array. Background technique [0002] Space signal direction of arrival (Direction of Arrival, DOA) estimation is a main research direction of space spectrum estimation, which is widely used in radar, sonar, earthquake, communication and many other fields. The basic problem of DOA estimation is to determine the spatial position of multiple signals of interest in a certain area of ​​space at the same time (that is, the direction angle of each signal arriving at the reference element of the array, referred to as the direction of arrival). Classic super-resolution DOA estimation algorithms include multiple signal classification algorithm (MUSIC, MultipleSignal Classification) and signal parameter estimation algorithm based on rot...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S3/00
CPCG01S3/00
Inventor 杨晋生孙光涛陈为刚
Owner TIANJIN UNIV
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