三维成像声呐平面基阵稀疏化目标函数的设计
发布时间：2018-10-11 09:41
【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。
[Abstract]:In order to make 3D imaging sonar with sparse array have good performance in imaging signal-to-noise ratio (SNR), angular resolution and stability, an evaluation function is proposed, which includes four factors: principal sidelobe ratio, sidelobe height and sidelobe height, main lobe width, amplitude and phase error between channels. The optimization process is improved to ensure the gain of the array and reduce the effect of the failure of the array elements at the same time, the optimization results are insensitive to the amplitude and phase error. Through the analysis of different optimization processes and experimental results, it is verified that the proposed objective function can make 3D imaging sonar have better comprehensive performance.
【作者单位】： 中国科学院声学研究所;
【基金】：国家自然科学基金(11304343)资助
【分类号】：TB56
[Abstract]:In order to make 3D imaging sonar with sparse array have good performance in imaging signal-to-noise ratio (SNR), angular resolution and stability, an evaluation function is proposed, which includes four factors: principal sidelobe ratio, sidelobe height and sidelobe height, main lobe width, amplitude and phase error between channels. The optimization process is improved to ensure the gain of the array and reduce the effect of the failure of the array elements at the same time, the optimization results are insensitive to the amplitude and phase error. Through the analysis of different optimization processes and experimental results, it is verified that the proposed objective function can make 3D imaging sonar have better comprehensive performance.
【作者单位】： 中国科学院声学研究所;
【基金】：国家自然科学基金(11304343)资助
【分类号】：TB56
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