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基于Rényi的检测北大西洋直的枪声声

Artorix de la Cruz¹, Mae L Seto¹

¹Intelligent Systems Laboratory, Mechanical Engineering Department, Dalhousie University, Halifax, Nova Scotia, Canada.

JASA express letters

|January 9, 2026

概括

一种新的雷尼光谱法增强了在噪音条件下水下声信号检测. 通过调整Rényi顺序参数,这种方法优化了信号噪声对比度,优于现有方法.

科学领域:

声学信号处理声学信号处理
信息理论是信息理论.
海洋生物声学海洋生物声学

背景情况:

在低信号噪声比 (SNR) 的环境中,水下声信号检测具有挑战性.
像香农光谱这样的传统方法在适应性检测方面存在局限性.

研究的目的:

介绍一种新的雷尼光谱,用于环境适应性水下声信号检测.
通过利用Rényi顺序参数来优化信号检测能力.
将性能与香农光谱探测器进行比较.

主要方法:

开发了一种适用于声信号的雷尼光谱度量.
分析了不同雷尼序列 (α) 的变量,以确定最佳检测参数.
使用被动记录北大西洋公枪击的方法验证了该方法.

主要成果:

雷尼光谱有效地增强了信号和背景噪声之间的对比度.
确定了四种不同的变异作为α的函数的模式,揭示了信号选择的最佳间隔.
与基于香农光谱的探测器相比,提出的方法显示出更高的性能.

结论:

雷尼光谱为优化水下声信号检测提供了一个单一的可调节参数 (α).
这种方法在具有挑战性的低SNR条件下提供了更好的性能.
该方法对海洋哺乳动物监测和其他声监测任务的应用非常有希望.

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