A Simple Ship Radiated Noise Model and Its Application in Weak Signal Detection Based on Higher Order Cumulant

2019 Ninth International Workshop on Signal Design and its Applications in Communications (IWSDA) Pub Date : 2019-10-01 DOI:10.1109/IWSDA46143.2019.8966092

C. Peng, Lei Yang, Xiaomin Jiang, Yue Song, Sha Zou

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引用次数: 2

Abstract

In this paper, a simple model of ship radiated noise is designed. Firstly, the characteristics of ship radiated noise are analyzed. Then, according to the characteristics of ship radiated noise, the calculation model of sound field, the line spectrum component and the continuous spectrum component of radiated noise are established respectively, Simple model has the advantages of high calculation efficiency and more practicability. At the same time, we use the simple ship radiated noise model to carry out the application of high-order cumulant in weak signal detection. Experiments and simulation results show that the simple ship radiated noise model established in this paper is in line with the characteristics of ship radiated noise, and has very good reference and application value. Simultaneously, the simulation results show that the slice spectrum of high-order cumulant has obvious advantages over the power spectrum (second-order spectrum). High-order spectrum can effectively extract the harmonic components of radiated noise, and can also be used for the detection of quadratic phase coupling.

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基于高阶累积量的船舶辐射噪声简单模型及其在弱信号检测中的应用

本文设计了一个简单的船舶辐射噪声模型。首先，分析了舰船辐射噪声的特征。然后，根据船舶辐射噪声的特点，分别建立了辐射噪声声场、线谱分量和连续谱分量的计算模型，模型简单，计算效率高，实用性强。同时，利用简单的船舶辐射噪声模型，进行了高阶累积量在弱信号检测中的应用。实验和仿真结果表明，本文建立的简单船舶辐射噪声模型符合船舶辐射噪声的特点，具有很好的参考和应用价值。同时，仿真结果表明，高阶累积量的切片谱比功率谱(二阶谱)具有明显的优势。高阶谱可以有效地提取辐射噪声中的谐波成分，也可用于二次相位耦合的检测。

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2019 Ninth International Workshop on Signal Design and its Applications in Communications (IWSDA)

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