基于波束模态分解的线谱提取方法
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- 英文论文题名：A line spectrum extraction method based on beam mode decomposition
- 论文作者：罗昕炜 ; 方世良
- 英文论文作者：LUO Xin-wei ; FANG Shi-liang ; Key Laboratory of Underwater Acoustic Signal Processing of Ministry of Education ; Southeast University
- 年：2016
- 作者机构：东南大学水声信号处理教育部重点实验室;
- 论文关键词：多目标干扰 ; 线谱提取 ; 模态分解
- 英文论文关键词：multi target interference ; line spectrum extraction ; mode decomposition
- 会议召开时间：2016-10-28
- 会议录名称：2016年全国声学学术会议论文集
- 语种：中文
- 分类号：U674.70;U666.7
- 学会代码：OGSM
- 会议名称：2016年全国声学学术会议
- 会议地点：中国湖北武汉
- 主办单位：中国声学学会
- 学会名称：中国声学学会
- 页数：3
- 文件大小：266k
- 原文格式：D
- 会议级别：全国
摘要
存在多目标情况下,常规基于声纳目标跟踪波束提取的目标线谱受到多目标干扰,给目标线谱准确提取带来了困难。基于线列阵声纳,本文分析了多目标条件下线谱成分在多波束图中的表现形式,给出了多目标信号条件下的多波束线谱模型,并提出了一种基于波束模态分解的目标线谱提取方法。该方法对多个跟踪波束同时进行线谱检测,将各跟踪波束检测得到的线谱进行波束模态分解和目标关联,得到更为纯净的目标线谱特征。仿真数据分析表明,在多目标条件下,该方法可以更为有效的提取目标的线谱。
In the presence of multiple target, the conventional line spectrum extraction method based on target tracking beam data is interfered by other targets signal, which brought difficulties to extraction the target line spectrum correctly. Based on the linear array sonar, this paper analyzed multi-target line spectrum energy distribution in frequency domain and spatial domain and gave a multi-target multi-beam line spectrum model. Based on the model, this paper proposed a target line-spectrum extraction method based on multi-beam data. In the method, line spectrum detection is made in multi-target tracking beam. Through the beam mode decomposition and target association, the detected line spectrum is purified. Experimental results based on simulation data have verified the correctness and effectiveness of the proposed method.
In the presence of multiple target, the conventional line spectrum extraction method based on target tracking beam data is interfered by other targets signal, which brought difficulties to extraction the target line spectrum correctly. Based on the linear array sonar, this paper analyzed multi-target line spectrum energy distribution in frequency domain and spatial domain and gave a multi-target multi-beam line spectrum model. Based on the model, this paper proposed a target line-spectrum extraction method based on multi-beam data. In the method, line spectrum detection is made in multi-target tracking beam. Through the beam mode decomposition and target association, the detected line spectrum is purified. Experimental results based on simulation data have verified the correctness and effectiveness of the proposed method.
引文
[1]Urick R.J Principle of underwater sound[M].New York;Mc Graw-Hill Book Company,1983.
[2]Zhai C P,Zhang M W,Liu Y D,Zhang Y 2013 Acta Acoust.38281.
[3]Cigada A,Ripamonti F,Vanali M 2007 Mech.Syst.Sig-nal Process.21 3645
[4]Brooks T F,Humphreys William M 2006 J.Sound Vib.294 856
[5]Fleury V,Bulte J 2011 J.Acoust.Soc.Am.129 1417
[2]Zhai C P,Zhang M W,Liu Y D,Zhang Y 2013 Acta Acoust.38281.
[3]Cigada A,Ripamonti F,Vanali M 2007 Mech.Syst.Sig-nal Process.21 3645
[4]Brooks T F,Humphreys William M 2006 J.Sound Vib.294 856
[5]Fleury V,Bulte J 2011 J.Acoust.Soc.Am.129 1417