A Modeling Method for Radiation Front Error of Flat Slot Array Antenna
A modeling method and array antenna technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problems of antenna radiation array shape error, assembly error, non-uniqueness, etc., to improve accuracy and Efficiency, the effect of ensuring accuracy
Inactive Publication Date: 2017-12-12
XIDIAN UNIV
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Problems solved by technology
The disadvantage is that the antenna radiation front error in real engineering also includes shape error, assembly error and processing error. These three errors are surface errors of different scales.
Secondly, the parameters used by the periodic function and the random function are not "intrinsic parameters", which are related to the resolution and sampling length of the measuring instrument, and are not unique to the surface of the same property
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[0070] A method for modeling the radiation front error of the flat plate crack array antenna based on the three-scale surface error model of the present invention, its overall idea is:
[0071] Firstly, make an experimental sample with the same material properties as the plate crack array antenna sample, and roughly measure the overall surface error information of the experimental sample; The error information of the inner surface is accurately measured and the error data is extracted; the error information of three different scales in the surface error information is separated by using mathematical multi-scale morphology, and the error information of different scales is modeled respectively. The mathematical model of the scale error is reorganized, and finally the accurate modeling of the antenna front error is realized.
[0072] The present invention will be specifically introduced below in conjunction with the accompanying drawings and specific embodiments.
[0073] refer ...
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The invention discloses a method for modeling the radiation front error of a flat-plate slit array antenna, which comprises the following steps: making an experimental sample; roughly measuring the overall surface error information of the experimental sample; determining the number and position of sampling areas of the sample; Error information, extract error data; separate the error information of large, medium and small scales; model the error information of each scale; integrate the mathematical models of the errors of each scale; If it does not meet the error accuracy index, repeat the previous steps until the accuracy requirements are met. The advantages of the present invention lie in that: the measured error data of the antenna surface is used as the data source of the modeling function to ensure the accuracy of the mathematical model; the error information of large, medium and small scales is separated to ensure the modeling process The accuracy of the three scale error information is integrated to ensure the accuracy of the overall model.
Description
technical field [0001] The invention relates to a modeling method for the radiation front error of a flat-panel slot array antenna, in particular to a modeling method for the radiation front error of a flat-panel slot array antenna based on a three-scale surface error model, and belongs to the technical field of antennas. Background technique [0002] The radiation front error of the flat panel slot array antenna is one of the important technical performance indicators to measure and evaluate the quality of the entire antenna structure. It not only directly affects the aperture efficiency of the antenna, but also affects the main lobe width and side lobe level of the antenna pattern. The current level of antenna manufacturing technology and its working environment make the generation of array error inevitable, so it is necessary to study the relationship between the array error and the electrical performance of the antenna, and the basis of this research work is to analyze th...
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IPC IPC(8): G06F17/50
Inventor 李娜李素兰唐兵黄进周金柱宋立伟李鹏
Owner XIDIAN UNIV