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Method for pretreating reflecting plane aerial panel deformation data

A technology of data preprocessing and reflective surfaces, which is applied to antennas, electrical components, etc., can solve problems such as low precision of pattern, low data precision, and large amount of data

Inactive Publication Date: 2008-08-27
XIDIAN UNIV
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Problems solved by technology

[0011] There are two defects in the data preprocessed by the above two methods: one is that the large amount of processed data leads to a long calculation time of the pattern; the other is that the low precision of the processed data leads to low precision of the pattern

Method used

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  • Method for pretreating reflecting plane aerial panel deformation data
  • Method for pretreating reflecting plane aerial panel deformation data
  • Method for pretreating reflecting plane aerial panel deformation data

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Embodiment Construction

[0069] The electrical performance analysis of the deformed reflector antenna is based on the information of the deformed reflector, which includes the discrete topological structure of the continuous reflector and the three-dimensional coordinates of discrete points or sampling points. The data files containing these information are the object of the present invention. These data are used to calculate electrical properties, mainly using numerical integration. Due to the small number of sampling points and the mismatch between the discrete grid and the grid required by numerical integration, the data in the data file cannot be used directly and must be preprocessed. According to the Gauss integral formula, the coordinates of the numerical integration points and their coefficients are obtained from the known node coordinates, and the phase difference caused by the deformation is obtained, which can be used for subsequent calculations.

[0070] refer to figure 1 Generally, the ...

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Abstract

The invention discloses a preprocessing method for deformation data of a panel of a reflector antenna. The method takes deformation data of the reflector antenna as a processing object, and selects different data preprocessing methods according to different data types in engineering of a sector panel sampling point three dimensional coordinate, a triangular unit nodal coordinate and a quadrilateral unit nodal coordinate; an area coordinate and a polar coordinate are introduced to simplify an integral domain of any unit; the efficiency of the numerical integration is improved by using the Gauss integral formula; the number of lobes of a directional diagram are evaluated by referring to the half power lobe width; the number of discrete points of each lobe are picked up to determine the discrete precision of the directional diagram; according to the discrete precision of the directional diagram, the numerical integration calculation is repeated, and a complete far field directional diagram of a deformed reflector antenna is drawn in the end. A simulation result shows that the invention can not only effectively reduce the data processing time, but also improve the calculating precision of the antenna directional diagram; thereby the preprocessing method can be applied to the preprocessing of the deformation data of the reflector antenna under a plurality of engineering situations.

Description

technical field [0001] The invention belongs to the technical field of radar antennas, in particular to a method for preprocessing deformation data of reflector antenna panels based on different numerical integration schemes. It is applied to the analysis of the electrical performance of deformed reflector antennas. Background technique [0002] Planar antenna is a widely used antenna form in the fields of communication, radar and radio astronomy. With the development of technology, the aperture of the reflector antenna is getting bigger and bigger, and the frequency band is getting higher and higher. Not only does the processing and manufacturing requirements increase, but it is also more susceptible to deformation caused by external influences. The deformation of the reflector antenna is mainly reflected in the deformation of the panel. The panel deformation data is generally obtained through actual measurement or calculation of structural analysis software. On this bas...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q15/14H01Q19/10
Inventor 段宝岩李鹏郑飞王伟宋立伟王从思周金柱李华平
Owner XIDIAN UNIV
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