利用遗传和声算法辅助相位波前调制
Phase Optimization of Wavefront Shaping Using Genetically Assisted Harmony Search Algorithm
徐嘉成 1张栩瑜 1张大伟 2韩申生 3刘红林4
作者信息
- 1. 上海理工大学光电信息与计算机工程学院,上海 200093;中国科学院上海光学精密机械研究所空天激光技术与系统部,上海 201800
- 2. 上海理工大学光电信息与计算机工程学院,上海 200093
- 3. 中国科学院上海光学精密机械研究所空天激光技术与系统部,上海 201800;中国科学院大学,北京 100049;国科大杭州高等研究院,浙江 杭州 310024
- 4. 中国科学院上海光学精密机械研究所空天激光技术与系统部,上海 201800;中国科学院大学,北京 100049
- 折叠
摘要
针对透散射介质聚焦问题,提出了一种用于波前调制的遗传和声算法,目标是获取更高更稳定的光强增益,同时具备更优的抗噪能力.遗传和声算法的主要创新在于,将遗传算法交叉定向优化的过程与和声搜索算法本身特殊的检索方式相结合,改善算法优化能力的同时,通过和声算法的遍历过程确保了算法寻优的全局性,提高了算法的适应能力.实验结果表明,遗传和声算法能够较好地完成单点与多点的波前聚焦,在目标指定位置形成了明亮可见的光斑,聚焦增益随调制模块数增加而增加.同时,借助仿真模型,在添加不同水平的噪声环境下,将遗传和声算法与原和声算法及其他经典优化算法进行了对比,结果表明遗传和声算法在噪声环境下较原算法有着更高的增益效果,对比其他经典算法也有着更高的增益上限,证明了算法改进策略的有效性及其应用潜力.
Abstract
To address problems arising from focusing through scattering media,this paper proposes a genetically assisted harmony search(GAHS)algorithm for wavefront modulation to achieve greater and more stable light-intensity enhancement while maintaining high noise resistance.The main innovation of GAHS algorithm is the combination of the genetic-algorithm cross-directional optimization process with the retrieval method of the harmony search algorithm,which improves the algorithm's optimization ability while ensuring the globality of the algorithm optimization through the traversal process of the harmony algorithm,thereby improving the algorithm's adaptability.Experimental results show that the GAHS algorithm can efficiently complete single-and multi-point wavefront focusing,thus forming a bright and visible light spot at the specified target position;additionally,the focusing gain increases with the number of modulation modules.A simulation model was constructed.In an environment with different noise levels,the GAHS algorithm was compared with the original harmony search algorithm and other classical optimization algorithms.The results show that the GAHS algorithm presents a higher enhancement level than the original algorithm in a noisy environment and has a higher enhancement upper limit compared with other classical algorithms,thus demonstrating its effectiveness as well as potential in imaging and light manipulation through scattering media.
关键词
物理光学/散射介质/相位波前调制/遗传和声算法/聚焦增益Key words
physical optics/scattering medium/phase wavefront modulation/genetically assisted harmony search algorithm/focusing enhancement引用本文复制引用
出版年
2024
NETL
NSTL
万方数据