Thinned linear array using joint optimization of IWDO/FFT algorithm

A sparse array synthesis method based on improved wind-driven optimization algorithm (IWDO) and fast Fourier transform (FFT) for the purpose of sidelobe suppression was introduced. First, the uniform linear array was sparse by the FFT algorithm. Then the amplitude excitation weighting of array eleme...

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Bibliographic Details
Published in:Journal of electromagnetic waves and applications Vol. 35; no. 18; pp. 2480 - 2491
Main Authors: Li, Cheng-Zhang, Li, Hai-Ming
Format: Journal Article
Language:English
Published: Taylor & Francis 12.12.2021
Subjects:
antenna sparse
fast Fourier transform algorithm
sidelobe suppression
Wind-driven optimization algorithm
ISSN:0920-5071, 1569-3937
Online Access:Get full text
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Summary:A sparse array synthesis method based on improved wind-driven optimization algorithm (IWDO) and fast Fourier transform (FFT) for the purpose of sidelobe suppression was introduced. First, the uniform linear array was sparse by the FFT algorithm. Then the amplitude excitation weighting of array elements was optimized by IWDO algorithm based on probability factor chaotic map. During the optimization process, the minimum peak sidelobe level was used as the fitness function. By comparing with the simulation results of classic Chebyshev weighting method, the method proposed in this paper has better performance.
ISSN:0920-5071
1569-3937
DOI:10.1080/09205071.2021.1952902