On conventional beamforming and deconvolution
On conventional beamforming and deconvolution
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DOI：
10.1109/oceansap.2016.7485545
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发表时间：
2016-04
期刊：
影响因子：
--
通讯作者：
T. C. Yang
中科院分区：
文献类型：
--
作者：
T. C. Yang
传统的波束成形是鲁棒的，但是遭受胖波束和高电平旁瓣。本文将Lucy-Richardson算法应用于类似于图像去模糊的常规波束功率（相对于复波束输出），从而避免了常见反卷积算法的不稳定问题。去卷积波束功率产生窄（高分辨率）波束和低旁瓣电平。结果表明，弱目标检测大声喧哗（与25 dB以上的信号电平）使用这种方法类似的高分辨率的方法，如主模抑制（DMR）方法或MVDR与对角加载。
Conventional beamforming is robust but suffers from fat beams and high level sidelobes. This paper applies the Lucy-Richardson algorithm to the conventional beam power (versus the complex beam output) similar to image de-blurring, and thus avoid the instability problem of common deconvolution algorithms. The deconvolved beam power yields narrow (high resolution) beams and low sidelobe levels. It is shown that a weak target is detected amid loud interferers (with 25 dB higher signal level) using this method similar to that using the high resolution method, such as the dominant mode rejection (DMR) method or MVDR with diagonal loading.