西安电子科技大学学报（自然科学版）Issue(1)：99-104,6.DOI:10.3969/j.issn.1001-2400.2016.01.018
随机散射光波的全局优化调幅聚焦
Focusing of random scattering light by global optimization amplitude modulation
摘要
Abstract
When focusing beyond diffraction-limit through the scattering medium with amplitude modulation by the feedback control algorithm , the grid-by-grid modulation scheme of the continuous sequential algorithm will severely degrade anti-noise performance , which is detrimental to focusing of light under low signal-to-noise ratio environment . To overcome the drawback of the continuous sequential algorithm , the genetic algorithm is introduced to shape the wavefront amplitude of incident light . With the help of its characteristic global optimization strategy , the amplitude of all the grids can be simultaneously modulated and optimized so as to reduce the sensitivity to noise . Simulation results show that the target focus intensity of the genetic algorithm can be hardly affected by noise level , and that the resultant focusing intensity acquired at different noise levels are very close . The focusing intensity value up to 80.67% that of SNR is ∞ can be achieved even if the noise level rises to SNR is 10 dB .关键词
随机散射介质/幅值调制/聚焦/遗传算法/连续序列算法Key words
scattering medium/amplitude modulation/focusing/genetic algorithm(GA)/continuous sequential algorithm(CSA)分类
数理科学引用本文复制引用
龚昌妹,邵晓鹏,吴腾飞,代伟佳,刘杰涛,张建奇..随机散射光波的全局优化调幅聚焦[J].西安电子科技大学学报（自然科学版）,2016,(1):99-104,6.基金项目
陕西省留学人员科技活动项目择优资助项目（68DP1204）；优秀留学回国人员创新基金资助项目 （）
