An active acoustic tripwire for simultaneous detection and localization of multiple underwater intruders.
An active acoustic tripwire for simultaneous detection and localization of multiple underwater intruders.
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DOI：
10.1121/1.2977675
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发表时间：
2008-11
期刊：
影响因子：
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通讯作者：
T. Folégot;G. Martinelli;P. Guerrini;J. Mark Stevenson
中科院分区：
文献类型：
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作者：
T. Folégot;G. Martinelli;P. Guerrini;J. Mark Stevenson
提出了一种基于前向散射的水下多目标同时探测和定位算法，并根据海上采集的数据进行了评估。本文量化的理论性能和处理数据收集在海上的几个深度和范围的交叉点之间的协议所获得的结果。对于特定的传感器和特定的声学路径，穿过声场的目标在屏障的每一侧上产生阴影。在后处理中，调用模型将预期路径与观察到的阴影相关联。该过程允许对声场内的目标位置进行三角测量。精确定位是通过利用接收信号的多径传播结构以及源和接收器位置的多样性来实现的。环境鲁棒性证明使用模拟，并可以解释通过使用一个阵列的源空间分布通过水柱。
An algorithm allowing simultaneous detection and localization of multiple submerged targets crossing an acoustic tripwire based on forward scattering is described and then evaluated based upon data collected at sea. This paper quantifies the agreement between the theoretical performance and the results obtained from processing data gathered at sea for crossings at several depths and ranges. Targets crossing the acoustic field produce shadows on each side of the barrier, for specific sensors and for specific acoustic paths. In post-processing, a model is invoked to associate expected paths with the observed shadows. This process allows triangulation of the target's position inside the acoustic field. Precise localization is achieved by taking advantage of the multipath propagation structure of the received signal, together with the diversity of the source and receiver locations. Environmental robustness is demonstrated using simulations and can be explained by the use of an array of sources spatially distributed through the water column.