基于遺傳算法和模擬退火的不等間距稀布陣的設(shè)計(jì)
DESIGN OF UNEQUALLY SPACED THINNED ARRAYS BASED ON GENETIC ALGORITHM AND SIMULATED ANNEALING
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摘要: 副瓣電平在天線陣列的設(shè)計(jì)中是很重要的指標(biāo),已經(jīng)有很多方法進(jìn)行這方面的改進(jìn)。該文在稀布陣概念的基礎(chǔ)上,引入了距離微擾,提出不等間距稀布陣的模型,來進(jìn)一步改善天線陣的副瓣電平,并且利用遺傳算法和模擬退火對(duì)這種不等間距稀布陣進(jìn)行了綜合設(shè)計(jì)。給出了200元線陣和4020面陣的優(yōu)化結(jié)果,從仿真結(jié)果可以看到天線副瓣電平得到了改善。
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關(guān)鍵詞:
- 稀布陣; 不等間距陣列; 遺傳算法; 模擬退火
Abstract: The sidelobe level is an important factor in designing of antenna arrays, and several methods have been developed to improve it. A model of unequally spaced thinned array is given in this paper, which introduces a distance perturbation into the element of a thinned array, in order to improve the sidelobe level. Genetic algorithm and simulated annealing are used to design this kind of array. The pattern of a 200 elements linear array and a 4020 planar array is presented for the isotropic element pattern, the results verifies the improvement of the sidelobe level. -
劉克成,宋學(xué)誠,天線原理,長(zhǎng)沙,國防科技大學(xué)出版社,1989,第四章.[2]L. Randy, Haupt, Thinned arrays using genetic algorithms, IEEE Trans. on AP, 1994, AP-42(7),993-999.[3]Vittotio Murino, Andrea Trucco, S. Carlo Regazzoni, Synthesis of unequally spaced arrays by simulated annealling, IEEE Trans on AP, 1996, AP-44(1), 119-123. -
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