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- Title
Optimisation of non-uniform time-modulated conformal arrays using an improved non-dominated sorting genetic-II algorithm.
- Authors
Wentao Li; Yongqiang Hei; Jing Yang; Xiaowei Shi
- Abstract
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 INSGAII, 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.
- Subjects
GENETIC algorithms; EVOLUTIONARY algorithms; BANDWIDTHS; SIGNAL processing; PARTICLE swarm optimization
- Publication
IET Microwaves, Antennas & Propagation (Wiley-Blackwell), 2014, Vol 8, Issue 4, p287
- ISSN
1751-8725
- Publication type
Article
- DOI
10.1049/iet-map.2013.0240