Array antenna calibration method, device and system and computer readable storage medium

An array antenna and calibration method technology, applied in the field of antennas, can solve the problems of low test efficiency, long measurement time, and the coefficient matrix is ​​not full of rank.

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Problems solved by technology

The disadvantage of the commutation measurement method is that, in general, the coefficient matrix is ​​not full of rank, and other prior knowledge must be introduced when solving the measurement equation, which will also lead to a long measurement time and low test efficiency

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  • Array antenna calibration method, device and system and computer readable storage medium
  • Array antenna calibration method, device and system and computer readable storage medium
  • Array antenna calibration method, device and system and computer readable storage medium

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Embodiment Construction

[0057] Embodiments of the present invention will be described in detail below. It should be emphasized that the following descriptions are only exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0058] In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0059] In addition, in the present invention, terms such as "installation", "connection", "connection" and "fixation" should be interpreted in a broad sense unless otherwise clearly specified and limited. Detachable connection, or integral connection; it c...

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Abstract

The invention discloses a calibration method of an array antenna. The calibration method comprises the following steps of S1, obtaining a directional diagram in an array of array elements of the arrayantenna and the position of the center of the directional diagram in the array; S2, feeding T groups of linearly independent port excitations I1, I2... IT to obtain corresponding T groups of aperturefield excitations I'1, I'2... I'T; S3, calculating to obtain a calibration matrix C according to the T groups of linearly independent port excitations I1, I2... IT and the T groups of aperture fieldexcitations I'1, I'2... I'T, wherein I't=C*It exists for the corresponding port excitations It and aperture field excitations I't of any group; And S4, calibrating each array element of the array antenna according to the calibration matrix C. According to the invention, the array antenna can be quickly and efficiently calibrated through less measurement data in combination with known priori knowledge of the array antenna. Compared with the existing calibration method, the method provided by the invention has the advantages of less measurement data, high efficiency, simple system composition, easy engineering realization and low cost.

Description

technical field [0001] The present invention relates to the technical field of antennas, in particular to a calibration method, device, system and computer-readable storage medium for an array antenna. Background technique [0002] Antennas are widely used in radio systems such as communications, broadcasting, television, radar, and navigation. They play the role of spreading radio waves and are an essential device for effectively radiating and receiving radio waves. [0003] An array antenna is a type of antenna that is arranged regularly or randomly by no less than two antenna elements and obtains predetermined radiation characteristics through proper excitation. In recent years, array antennas have attracted much attention as an important development direction of civilian and military antenna technology. [0004] The array antenna is composed of many antenna elements. Each element is fed with a signal of a certain amplitude and phase to form a specific beam and realize b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B17/12H04B17/21
Inventor 漆一宏于伟沈鹏辉
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