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Non-uniform parabola array antenna design method

A technology of array antenna and design method, which is applied in the field of array antenna layout, to achieve the effect of reducing the difficulty of design

Pending Publication Date: 2021-02-02
XI'AN POLYTECHNIC UNIVERSITY
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  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for designing a non-uniform parabolic array antenna, which solves the problem that the existing method can only realize the design of an array antenna with a relatively simple structure

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Embodiment Construction

[0042] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0043] The invention provides a method for designing a non-uniform parabolic array antenna, comprising the following specific steps:

[0044] Step 1: Construct the mathematical expression of the parabolic array antenna structure. By adjusting the parameters a and b, parabolic array antennas with different structures can be obtained, and the external structures of different conformal carriers can be simulated.

[0045] The structure of the parabolic array antenna is as follows: figure 1 As shown, the array elements are arranged on a parabola, the array aperture length is 2L, and the total number of array elements is constrained to 2N+1. The mathematical expression of the array antenna is expressed as:

[0046] y=f(x)=ax 2 +b (1)

[0047] Step 2: Determine the position of the array unit. Through mathematical derivation, the array element p...

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Abstract

The invention discloses a non-uniform parabola array antenna design method, which comprises the following steps of: 1, constructing a mathematical expression of a parabola array antenna, and setting the aperture size of the array antenna, the number of array units and parabola related parameters; 2, calculating the positions of the array units with a minimum array element spacing constraint requirement; 3, calculating a radiation pattern of the parabolic array antenna, and calculating the highest sidelobe level of the radiation pattern to obtain a fitness function value; and 4, optimizing thepositions of the array units by using an invasive weed algorithm to obtain a design optimization result of the non-uniform parabolic array antenna. According to the non-uniform parabola array antennadesign method, the highest sidelobe level of a directional pattern can be reduced, the design difficulty of a feed network is greatly reduced, overlapping of adjacent array units is avoided, the mutual coupling effect of the array antenna is reduced, the minimum distance between the adjacent array units is restrained, and the size of the array antenna and the number of the array units are effectively limited.

Description

technical field [0001] The invention belongs to the technical field of array antenna arrangement methods, and in particular relates to a non-uniform parabolic array antenna design method. Background technique [0002] The research on non-uniform array antennas began in the 1960s and was successfully applied in radar systems such as ESAR and HAPDAR in the 1980s. Due to the limitation of computer development level at that time, the non-uniform array antenna design methods mainly include generalized nonlinear minimum-maximum method, extended projection method and numerical optimization method of computer, etc. In recent years, with the continuous development of computer technology, various algorithms can be realized on the computer, and the research on non-uniform array antennas can be developed in the direction of large-scale and strict constraints. [0003] The existing non-uniform array antenna design methods with complex constraints mainly use intelligent optimization algo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/18G06F30/27G06N3/00G06F111/04
CPCG06F30/18G06F30/27G06N3/006G06F2111/04
Inventor 郭华
Owner XI'AN POLYTECHNIC UNIVERSITY
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