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Method and system for synthesizing planar array directional diagram based on genetic algorithm of FFT

A planar array and genetic algorithm technology, applied in the fields of genetic laws, genetic models, design optimization/simulation, etc., can solve problems that are difficult to solve effectively, and achieve the effect of shortening computing time and improving computing efficiency.

Pending Publication Date: 2021-08-17
BEIJING INST OF RADIO MEASUREMENT
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Problems solved by technology

Traditional Taylor synthesis, Woodward synthesis and other methods are difficult to effectively solve such multi-parameter, nonlinear, non-differentiable synthesis problems

Method used

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  • Method and system for synthesizing planar array directional diagram based on genetic algorithm of FFT
  • Method and system for synthesizing planar array directional diagram based on genetic algorithm of FFT
  • Method and system for synthesizing planar array directional diagram based on genetic algorithm of FFT

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Embodiment Construction

[0025] The principles and features of the present invention will be described below with reference to the accompanying drawings, and the scope of the invention is not intended to limit the scope of the invention.

[0026] like figure 1 As shown, a flow chart provided for an embodiment of the method of the present invention, the method includes:

[0027] S1, convert the planar array amplitude phase excitation weight to a one-dimensional vector, and generate initial breeders as an individual with amplitude phase excitation weights.

[0028] For example, the amplitude matrix AMP and phase matrix PHS of the planar phased array antenna are:

[0029]

[0030]

[0031] Among them, A i,j The amplitude value of the JR column of the first line, P i,j For the phase value of the row of row, NelementSAZ represents the number of cells of the array orientation, the number of NELEMENTSEL represents the number of cells of the array. The AMP is converted to a column vector as an individual in t...

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Abstract

The invention discloses a method and a system for synthesizing a planar array directional diagram based on a genetic algorithm of FFT, and relates to the field of array antenna beam forming and directional diagram optimization. The method comprises the following steps: generating an initial population; converting individuals in the initial population into an amplitude phase excitation matrix, and performing fast Fourier transform on the amplitude phase excitation matrix to obtain a directional diagram of the antenna; selecting azimuth plane numerical values according to the directional diagram to calculate the fitness of the individuals, performing selection operation, crossover operation and mutation operation on the individuals according to the fitness, generating a new population, performing repeated iteration, and outputting the optimal individual; and taking the amplitude phase excitation matrix corresponding to the optimal individual as an excitation weight for antenna array low sidelobe shaping or antenna pattern zero setting. The method is suitable for integration of the radar array antenna, integration of the radar array antenna is achieved, the far-field directional diagram of the array antenna is calculated through fast Fourier transform, the calculation efficiency can be remarkably improved, and the calculation time is effectively shortened.

Description

Technical field [0001] The present invention relates to an antenna beam excipient and a direction map optimization, and more particularly to a method and system of a comprehensive planar array pattern based on FFT based genetic algorithm. Background technique [0002] In many areas such as radar, communication technology, special shape antenna beams are often required. The amplitude and phase of the excitation are referred to as an antenna synthesis according to the beam shape. The species of the array integrated direction map mainly have the remaining square direction map, a flat top pattern, a low sub-flap pattern, and the like. Traditional Taylor's Comprehensive, Woodward Comprehensive Method is difficult to effectively solve this multi-parameter, nonlinear, irrational comprehensive issue. Inventive content [0003] The technical problem to be solved by the present invention is a method and system for providing an FFT-based genetic algorithm integrated planar array pattern an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/27G06N3/12
CPCG06F30/27G06N3/126
Inventor 徐名一杨剑罗成斌
Owner BEIJING INST OF RADIO MEASUREMENT
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