基于谐波集检测的飞行目标水下声探测算法研究

doi:10.3969/j.issn.1000-1093.2019.05.018

兵工学报 ›› 2019, Vol. 40 ›› Issue (5): 1050-1057.doi: 10.3969/j.issn.1000-1093.2019.05.018

基于谐波集检测的飞行目标水下声探测算法研究

穆森^1，2，李京华¹，张恒³，陈果²

（1.西北工业大学电子信息学院，陕西西安 710072; 2.陆军研究院近地面探测技术实验室，江苏无锡 214035;3.宜昌测试技术研究所，湖北宜昌 443003）

收稿日期:2018-07-11 修回日期:2018-07-11 上线日期:2019-07-26
通讯作者: 李京华（1964—），女，教授，博士生导师 E-mail:ljhy6331@nwpu.edu.cn
作者简介:穆森（1993—），男，硕士研究生。 E-mail: 946071400@qq.com
基金资助:
近地面探测技术重点实验室基金项目（6142414040307）

Research on Underwater Acoustic Detection Algorithm of Aerial Targets Based on Harmonic Set Detection

MU Sen^1,2， LI Jinghua¹， ZHANG Heng³， CHEN Guo²

（1.College of Electronic Information， Northwestern Polytechnical University， Xi'an 710072， Shaanxi， China; 2.Near Ground Detection Technology Laboratory, Army Research Institute， Wuxi 214035， Jiangsu， China;3.Yichang Institute of Testing Technology, Yichang 443003， Hubei， China)

Received:2018-07-11 Revised:2018-07-11 Online:2019-07-26

摘要/Abstract

摘要： 螺旋桨飞机以一定高度在水面上飞行时，其噪声谱中的线谱存在明显的谐波关系。随着噪声由空气入水的跨界传播以及水下传播环境的变化，谐波关系有减弱的趋势。针对此问题，提出了基于谐波集检测与最强谱线检测相结合的检测算法。该算法采用门限调节因子来自适应地调整检测门限，提高了远距离低信噪比情况下目标的探测性能，可以有效地在水下环境检测螺旋桨飞机。水下单水听器接收的实测信号检测结果表明，对于巡航速度为36 m/s的螺旋桨飞机，探测距离可以达到2.48 km.

关键词: 螺旋桨飞机, 水下声探测, 谐波集, 自适应门限

Abstract: The line spectrum in noise spectrum has obvious harmonic relation when a propeller-driven aircraft flies over the water surface at a certain height. With the cross-border propagation of noise from air to water and the change of underwater propagation environment, the harmonic relation tends to weaken. To solve this problem, an underwater acoustic detection algorithm based on the combination of harmonic set detection and strongest line detection is proposed, and the detection threshold is adaptively adjusted by using the threshold adjustment factor α, which improves the target detection performance under the condition of the low signal-to-noise ratio at a long distance and can effectively detect the propeller-driven aircrafts in underwater environment. The detection results of the measured signals received by the single hydrophone in water show that the detection distance can reach 2.48 km for a propeller-driven aircraft with a cruise speed of 36 m/s. Key

Key words: propeller-drivenaircraft, underwateracousticdetection, harmonicset, thresholdadjustmentfactor

中图分类号:

TB566

穆森，李京华，张恒，陈果. 基于谐波集检测的飞行目标水下声探测算法研究[J]. 兵工学报, 2019, 40(5): 1050-1057.

MU Sen， LI Jinghua， ZHANG Heng， CHEN Guo. Research on Underwater Acoustic Detection Algorithm of Aerial Targets Based on Harmonic Set Detection[J]. Acta Armamentarii, 2019, 40(5): 1050-1057.

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第40卷第5期
2019 年5月兵工学报ACTA
ARMAMENTARIIVol.40No.5May2019

基于谐波集检测的飞行目标水下声探测算法研究

Research on Underwater Acoustic Detection Algorithm of Aerial Targets Based on Harmonic Set Detection

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