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Two-dimensional direction of arrival estimation method, two-dimensional direction of arrival estimation device and terminal

A technology of direction estimation and two-dimensional wave, applied in the field of signal processing, can solve problems such as unsuitable two-dimensional wave arrival estimation

Active Publication Date: 2018-11-13
ARMY ENG UNIV OF PLA
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Problems solved by technology

However, the G-MUSIC method can realize the one-dimensional direction of arrival estimation under the condition of short snapshots by generating a consistent estimator of the number of array elements and the number of snapshots, but it is not suitable for two-dimensional direction of arrival estimation.

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  • Two-dimensional direction of arrival estimation method, two-dimensional direction of arrival estimation device and terminal

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[0028] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present invention. It will be apparent, however, to one skilled in the art that the invention may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

[0029] In order to make the purpose, technical solution and advantages of the present invention clearer, specific embodiments will be described below in conjunction with the accompanying drawings.

[0030] see figure 1 , which shows the implementation flowchart of the two-dimensional direction of arrival estimation method provided by the embodiment of the present invention, which is described in ...

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Abstract

The invention is applicable to the technical field of signal processing, and provides a two-dimensional direction of arrival estimation method, which comprises the steps of acquiring snapshot data output by an antenna array; processing the snapshot data based on a constructed filter self-adaptive to a weighted least square method, and obtaining the estimation of an incident signal repeated amplitude; based on the estimation of the incident signal repeated amplitude, carrying out iterative computation to obtain an energy matrix of an incident signal in a specified two-dimensional space; carrying out two-dimensional spectrum peak searching on the energy matrix, and obtaining a two-dimensional direction of arrival of the incident signal. According to the two-dimensional direction of arrival estimation method provided by the invention, the problem that in the prior art, the two-dimensional direction of arrival estimation cannot be estimated under the short snapshot condition is solved, andthe combined estimation of an azimuth angle and a pitch angle of a far-field narrow-band signal can be realized by utilizing less snapshots.

Description

technical field [0001] The invention belongs to the technical field of signal processing, and in particular relates to a two-dimensional direction of arrival estimation method, a two-dimensional direction of arrival estimation device and a terminal. Background technique [0002] Direction Of Arrival (DOA) estimation is an important processing step in radar signal processing, through the antenna array formed by multiple sensors placed in space (each sensor has its own independent channel for signal acquisition Receive) to collect and receive signals, and estimate the signal parameters of the incident signal collected by the antenna array (for example: estimate the number of signal sources, incident angle, amplitude, phase and other parameters), and then obtain the distance information and orientation information of the signal source . [0003] Among them, the two-dimensional direction of arrival estimation (azimuth and elevation angle of the incident signal) can obtain more ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S3/14
CPCG01S3/14
Inventor 刘德亮王波韩冬郭希维何鹏谢建华许葆华翟优杨超超张状和
Owner ARMY ENG UNIV OF PLA
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