| 船舶辐射噪声的混沌现象研究 |
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| 引用本文： | 章新华, 张晓明, 林良骥. 船舶辐射噪声的混沌现象研究[J]. 声学学报, 1998, 23(2): 134-140. DOI: 10.15949/j.cnki.0371-0025.1998.02.005 |
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| 作者姓名： | 章新华 张晓明 林良骥 |
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| 作者单位： | 海军大连舰艇学院!大连，116018，海军大连舰艇学院!大连，116018，大连测控技术研究所!大连，116013 |
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| 摘 要： | 水下弱信号的检测和识别是当今水声信号处理领域中存在的难题.应用混沌、分形理论,从根空间轨迹、Lyapunov指数和关联维等方面研究了船舶辐射噪声的混饨现象,发现船舶辐射噪声信号的确存在混沌吸引子,且不同类别的信号具有不同的吸引子维数.这一结果将为水声信号处理,为水下目标探测和识别提供崭新的理论手段。
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| 收稿时间： | 1996-08-10 |
| 修稿时间： | 1996-12-29 |
Researches on Chaotic Phenomena of Noises Radiated from Ships |
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| ZHANG Xinhua, ZHANG Xiaoming, LIN Liangji. Researches on Chaotic Phenomena of Noises Radiated from Ships[J]. ACTA ACUSTICA, 1998, 23(2): 134-140. DOI: 10.15949/j.cnki.0371-0025.1998.02.005 |
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| Authors: | ZHANG Xinhua ZHANG Xiaoming LIN Liangji |
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| Abstract: | To detect and recognize the weak underwater signals are difficult problems in pro-cessing underwater acoustic signals.This paper presents a,study to the chaotic phenomena of noises radiated from ship by analyzing phase space portraits,estimating Lyapunov exponents and calculating correlation dimension.It was found that there are chaotic attractors in this kind of signals,and different type of ship has different correlation dimension.This result may providea novel theoretic means for detecting and recognizing underwater targets. |
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