Antenna deformation measuring method

A technology of antenna deformation and measurement method, which is applied to measurement devices, instruments, optical devices, etc., to achieve dense arrangement, improve reliability, and overcome the effects of sparse pasting

Inactive Publication Date: 2010-04-14
BEIHANG UNIV +1
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Problems solved by technology

[0004] The purpose of the present invention is to propose a method for measuring antenna deformation to improve the

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  • Antenna deformation measuring method

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Embodiment Construction

[0031] Such as figure 1 As shown, the process of an antenna deformation measurement method includes the steps of pasting marker points, scale layout, picture shooting, circle center extraction and correction, code number identification, three-dimensional shape calculation and deformation calculation. For antenna deformation measurement, refer to figure 2 . The specific implementation steps of the antenna deformation measurement method are as follows:

[0032] (1) Paste circular mark points 1 and ring mark points 2 arranged horizontally and vertically at equal intervals on the antenna surface 6 as measurement mark points, and take the center of the mark point as the measurement point for antenna deformation. Because there is no obvious matching feature on the surface of the antenna, it is impossible to achieve matching of points with the same name. In order to overcome this problem, it is necessary to paste measurement mark points. Therefore, the denser the mark points, the m...

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Abstract

An antenna deformation measuring method comprises firstly adhering circular mark points and circular ring mark points which are transversely and longitudinally arranged in equidistance on the surface of an antenna as measuring mark points, respectively taking images of the surface of the antenna which is adhered with the mark points before and after the antenna deforms, realizing the homonymy point matching through the arrangement relationship of the circular mark points and the circular ring mark points, recurring the three-dimensional coordinates of the mark points on the antenna before and after deforming according to the principles of photography measurement, finally putting the three-dimensional coordinates before and after the antenna deforms in the same coordinate system by using coding mark points on a staff gauge as a fixed reference point for the coordinate conversion, thereby calculating the antenna deformation. The measuring method has the characteristics of reliability, flexibility and high precision, can be used for the deformation measurement of the antenna under complicated conditions such as high-low temperature and the like, also can be used for the appearance measurement of the antenna, and has measurement precision superior to 13 mu m.

Description

technical field [0001] The invention relates to a method for measuring antenna deformation, which can be used in the fields of deformation measurement of antennas in high and low temperature environments, and antenna shape measurement, and belongs to the field of photogrammetry. Background technique [0002] When the temperature of the antenna changes drastically, the shape of its outer surface will be deformed, and the amount of deformation will directly affect the working performance and reliability of the antenna. Therefore, before the antenna is used, it is necessary to measure the deformation of the antenna when the temperature changes sharply, and evaluate the environmental adaptability of the antenna. At present, photographic methods are usually used to measure the deformation of antennas at different temperatures at home and abroad, but there are still problems in the measurement such as sparse pasting of marker points, difficulty in finding matching points with the ...

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Application Information

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IPC IPC(8): G01B11/16
Inventor 赵慧洁姜宏志李旭东周杰李冬
Owner BEIHANG UNIV
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