三维成像声呐平面基阵稀疏化目标函数的设计 -- 西北工业大学学报,2017,35(1):164-169
论文:2017,Vol:35,Issue(1):164-169
引用本文:
于涤非, 张春华, 黄勇. 三维成像声呐平面基阵稀疏化目标函数的设计[J]. 西北工业大学学报
Yu Difei, Zhang Chunhua, Huang Yong. Design of Cost Function on Thinning Planar Array of 3-D Sonar[J]. Northwestern polytechnical university

三维成像声呐平面基阵稀疏化目标函数的设计
于涤非, 张春华, 黄勇
中国科学院 声学研究所, 北京 100190
摘要:
为使具有稀疏阵的三维成像声呐在成像信噪比、角分辨率及稳定性方面均具有良好的性能,提出包含主副瓣比、旁瓣高度和、主瓣宽度、通道间幅相误差4个因素的评价函数。改进优化过程,在保证阵增益、降低阵元失效影响的同时,使优化结果对幅相误差不敏感。通过对不同优化过程及实验结果进行分析,验证提出的目标函数可以使三维成像声呐具有更好的综合性能。
关键词:    水声和海洋声学    三维成像声呐    稀疏抽取    波束形成    目标函数   
Design of Cost Function on Thinning Planar Array of 3-D Sonar
Yu Difei, Zhang Chunhua, Huang Yong
Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, China
Abstract:
Areasonable cost function comprising of max main-sidelobe ratio, sidelobe energy, mainlobe width and amplitude-phase errors is proposed to improve the performance of 3-D sonar with thinned planar array in imaging SNR, angular resolution and stability. Optimization of process, in which guarantee the array gain and reduce the effects of element failure at the same time, the optimization results are not sensitive to the amplitude and phase error. Analysis results of beam patterns with different cost functions and experimental results indicate that performance improvement is obtained by using proposed cost function.
Key words:    hydroacoustics    3-D underwater sonar    sparse planar arrays    beam forming    cost function    multi-objective optimization    genetic algorithm   
收稿日期: 2016-09-01     修回日期:
DOI:
基金项目: 国家自然科学基金(11304343)资助
通讯作者:     Email:
作者简介: 于涤非(1982-),中国科学院博士研究生,主要从事水声信号处理研究。
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