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Array antenna-based target signal source detection method

A technology of array antennas and detection methods, applied in direction finders using radio waves, radio wave direction/deviation determination systems, directional multi-channel systems using radio waves, etc., can solve application limitations, target source spatial resolution Low-level problems, to achieve the effect of improving accuracy, improving spatial resolution, and simple principle

Active Publication Date: 2018-11-06
WUHAN HONGXIN TECH DEV CO LTD
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Problems solved by technology

[0003] The embodiment of the present application provides a method for detecting target sources based on array antennas, which solves the problems of low spatial resolution and many limitations in application in the prior art for target source orientation estimation.

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Embodiment Construction

[0039] In order to better understand the above-mentioned technical solution, the above-mentioned technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0040] In the present invention, the method of two searches is adopted, and the power scan is used for the first time to determine the approximate source orientation and number; then, according to the received power map, the coverage is partitioned, and each cell performs the second search respectively, The MUSIC algorithm is used for the second time to calculate the precise source orientation in the cell.

[0041] Such as figure 1 As shown, the present invention provides a method for detecting a target signal source based on an array antenna, comprising the following steps:

[0042] Step 1. According to the arrangement structure of each element of the array antenna, use the beamforming algorithm to obtain the beam forming weight, so that the ra...

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Abstract

The invention belongs to the mobile communication technological field and discloses an array antenna-based target signal source detection method. The method includes the following steps that: the number and orientations of target signal sources are judged preliminarily though a beamforming technology, and an antenna coverage area is divided into a plurality of cells according to received signal power obtained in a beam rotation process; a beam is made to sequentially direct to the plurality of cells, and the spatial spectrum of signals in each of the cells is obtained through an MUSIC algorithm, and the number and orientations of target signal sources in each of the cells are determined; and the calculation results of the plurality of cells are summarized, and the exact number and preciseorientations of the target signal sources are obtained after comprehensive processing is carried out. With the array antenna-based target signal source detection method of the invention adopted, the problems of low spatial resolution and many limitations in application of target signal source orientation estimation in the prior art can be solved; and spatial resolution can be improved, and the number of signal sources that can be detected is not affected by the number of array antenna array elements.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a method for detecting a target information source based on an array antenna. Background technique [0002] In the past, array antennas were widely used in military fields such as radar, sonar, and electronic countermeasures. In recent years, array antennas have begun to enter civilian fields such as mobile communications. In the field of array signal processing, the azimuth estimation of the target source has always been an important content of research, and it is also a hot and difficult point of research. The traditional estimation method is based on beamforming technology, which determines the direction of the signal source by scanning. Although this method is simple to implement, its spatial resolution is low and it is impossible to obtain accurate angle values. There are also many limitations in calculating angles using similar algorithms such as MUSIC. For ex...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S3/74G01S3/14
CPCG01S3/14G01S3/74
Inventor 周巧玲陈俊涛吴子钢
Owner WUHAN HONGXIN TECH DEV CO LTD
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