A Hybrid Nonlinear Method for Array Thinning

A nonlinear method for array thinning is proposed. The method is based on hybrid usage of genetic algorithm (GA) and nonlinear apodization. The method proposes a special layout, which consists of two subarrays. Layout and weights for the subarray having larger aperture are designed by GA. Layout and...

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Bibliographic Details
Published inIEEE transactions on antennas and propagation Vol. 66; no. 5; pp. 2318 - 2325
Main Authors Epcacan, Erdal, Ciloglu, Tolga
Format Journal Article
LanguageEnglish
Published IEEE 01.05.2018
Subjects
Antenna arrays
Apertures
Array signal processing
Array thinning
genetic algorithm (GA)
Genetic algorithms
Gratings
Layout
linear arrays
nonlinear apodization
Optimization
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Summary:A nonlinear method for array thinning is proposed. The method is based on hybrid usage of genetic algorithm (GA) and nonlinear apodization. The method proposes a special layout, which consists of two subarrays. Layout and weights for the subarray having larger aperture are designed by GA. Layout and weights for the second subarray are determined according to results of the aforementioned design. Dual apodization is applied to the outputs of the subarrays to obtain the output. Results show that there is an improvement in peak side-lobe level, beam width, and current taper ratio for particular test problems in the literature.
ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2018.2809500