Improved propagation operator two-dimensional DOA estimation algorithm based on three-dimensional antenna array

A technology of propagation operator and three-dimensional antenna, which is applied in radio wave measurement system, orientator for measuring direction, measuring device, etc., can solve problems such as failure of angle estimation, and achieve the effect of reducing computational complexity and low computational complexity

Inactive 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 traditional two-dimensional DOA estimation, the angle estimation failure problem in the actual mobile communication pitch angle range with a pitch angle of 70°~90°, and the problem of pitch angle and azimuth angle pairing problem

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  • Improved propagation operator two-dimensional DOA estimation algorithm based on three-dimensional antenna array
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  • Improved propagation operator two-dimensional DOA estimation algorithm based on three-dimensional antenna array

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Embodiment Construction

[0023] Aiming at the problems existing in the existing DOA estimation algorithm, the present invention proposes an improved propagation operator two-dimensional DOA estimation algorithm based on a three-dimensional antenna array. It is a uniform linear array Y of N+1. In the xoy plane and yoz plane, there is a uniform linear array X and Z with N array elements parallel to the y-axis, the array element spacing of the sub-array, the sub-array Y and the sub-array The distance between array Z and sub-array Y and sub-array X is half the wavelength of the incoming signal.

[0024] The technical scheme adopted in the present invention: the improved propagation operator two-dimensional DOA estimation method based on the three-dimensional antenna array, comprising the following steps:

[0025] Step 1: Construct the received signal matrix.

[0026] Taking the array element located at the origin of the coordinates as the reference array element, the signal vectors received by the line a...

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Abstract

The invention relates to the technical field of using an array antenna to estimate the arrival direction of a received signal. The problem of failed angle estimation in the actual mobile communication pitch angle range with pitch angle from 70 degrees to 90 degrees in conventional two-dimensional DOA estimation is solved, and pitch angle and azimuth matching is realized. According to the improved propagation operator two-dimensional DOA estimation method based on a three-dimensional antenna array, the antenna array is a three parallel linear array; a uniform linear array Y with N+1 array elements is on the y-axis; uniform linear arrays X and Z with N array elements and parallel to the y-axis are respectively in an xoy plane and a yoz plane; and the array element pitch of subarrays and the distance between subarrays Y and Z and subarrays Y and X are half of the wavelength of an incoming wave signal. The method comprises the steps that 1 a received signal matrix is constructed; 2 a propagation matrix is constructed; 3 a rotation matrix is estimated; and 4 the azimuth and the pitch angle are estimated. The method provided by the invention is mainly applied to the design and manufacture of wireless 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 a signal using a three-dimensional 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 ...

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Application Information

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IPC IPC(8): G01S3/00
CPCG01S3/00
Inventor 杨晋生孙光涛陈为刚
Owner TIANJIN UNIV
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