Open AccessOptimisation of non‐uniform time‐modulated conformal arrays using an improved non‐dominated sorting genetic‐II algorithm
Author(s) -
Li Wentao,
Hei Yongqiang,
Yang Jing,
Shi Xiaowei
Publication year - 2014
Publication title -
iet microwaves, antennas and propagation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.555
H-Index - 69
eISSN - 1751-8733
pISSN - 1751-8725
DOI - 10.1049/iet-map.2013.0240
Subject(s) - sorting , conformal map , algorithm , genetic algorithm , computer science , sorting algorithm , mathematics , mathematical optimization , geometry
This study investigates the synthesis of the radiation patterns of the time‐modulated (TM) conformal arrays in real applications, including the optimisation of the layout, the switch‐on instants and pulse durations. An improved non‐dominated sorting genetic algorithm‐II (INSGA‐II) is proposed to optimise the non‐uniform TM conformal arrays. To maintain a balance between the exploitation and exploration ability, controlled elitism is employed and crossover operator based on the competition and selection among several crossover offspring is used in INSGA‐II to effectively explore the search space. Two design instances, including aperiodic TM cylindrical conformal array and airship conformal array, are optimised via INSGA‐II, in which both the bandwidth and radiation patterns of the radiating elements are considered during the design process. The design results obtained with INSGA‐II are compared with the non‐dominated sorting genetic algorithm‐II and mutiobjective particle swarm optimisation, and numerical results demonstrate that the proposed INSGA‐II exhibits promising potential ability for designing the aperiodic TM conformal arrays.