传统波束形成的多径到达可分离性及其在源定位中的应用

2022 5th International Conference on Information Communication and Signal Processing (ICICSP) Pub Date : 2022-11-26 DOI:10.1109/ICICSP55539.2022.10050636

Y. Qi, S. Zhou, Changpeng Liu, Jincong Dun, Lei Zhou

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引用次数: 1

摘要

利用垂直线阵列(VLA)在深水中对直接路径(D)和表面反射路径(SR)的到达角进行匹配，可以实现震源定位。这种源定位方法适用于多路径到达被分解为独立的区域，而不适用于多路径到达不可区分的区域。基于半功率波束宽度(- 3 dB)的近似表达式，分析了传统波束形成(CBF)多径到达的可分性以及在水深为1507 m、部署深度为1335.5 m ~ 1448 m的VLA实验配置下的源定位方法的适用区域。给出了标称深度为200 m和300 m的炸药源的试验结果。

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Separability of Multipath Arrivals by Conventional Beamforming and Its Use for Source Localization

Source localization can be achieved by matching the arrival angles of the direct (D) path and surface-reflected (SR) path with a vertical line array (VLA) in deep water. This source localization method works at regions where multipath arrivals are resolved as separate, while it fails at regions where multipath arrivals are indistinguishable. The separability of multipath arrivals by conventional beamforming (CBF) and the applicable region of the source localization method under one experimental configuration with water depth equal to 1507 m and a VLA deployed at depth from 1335.5 m to 1448 m are analyzed, based on the approximate expression of the half-power (−3 dB) beamwidth of CBF. Experimental results of explosive sources with nominal depth of 200 m and 300 m are also presented.

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2022 5th International Conference on Information Communication and Signal Processing (ICICSP)

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