| 基于DEMON线谱的轴频提取方法研究 |
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| 引用本文： | 殷敬伟,惠俊英,姚直象,杨春.基于DEMON线谱的轴频提取方法研究[J].应用声学,2005,24(6):369-374. |
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| 作者姓名： | 殷敬伟 惠俊英 姚直象 杨春 |
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| 作者单位： | 1. 哈尔滨工程大学水声工程学院,哈尔滨,150001
2. 海军工程大学信息与电气工程学院,武汉,430033 |
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| 摘 要： | 目标的螺旋桨不同则轴频不相同。轴频是目标的特征之一,可以应用于目标识别当中。本文提出一种改进的高频噪声解调分析(DEMON)方法,能够得到具有明显线谱的DEMON谱;提出最大公约数算法,并给出提取轴频的具体步骤。海试数据实验结果验证了本文所提方法及算法的有效性和可行性。
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| 关 键 词： | 水下目标识别 DEMON分析 轴频提取 最大公约数算法 |
| 收稿时间： | 06 18 2004 12:00AM |
| 修稿时间： | 2004-06-182005-06-20 |
Extraction of shaft frequency based on the DEMON line spectrum |
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| YIN Jing-Wei,HUI Jun-Ying,YAO Zhi-Xiang and YANG Chun.Extraction of shaft frequency based on the DEMON line spectrum[J].Applied Acoustics,2005,24(6):369-374. |
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| Authors: | YIN Jing-Wei HUI Jun-Ying YAO Zhi-Xiang and YANG Chun |
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| Institution: | College of Underwater Acoustic Eng., Harbin Engineering University, Harbin 150001;College of Underwater Acoustic Eng., Harbin Engineering University, Harbin 150001;College of Information & Electric, Navy Engineering University, Wuhan 430043;College of Underwater Acoustic Eng., Harbin Engineering University, Harbin 150001 |
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| Abstract: | Different propeller has different shaft frequency. Shaft frequency is one character of the target which can be applied to underwater targets identification. In this paper, a method to improve the DEMON spectrum estimation is proposed and by which we can get a DEMON spectrum which has only distinct line-spectrums. We then present the largest common divisor algorithm and give the process of extracting shaft frequency. The result of sea experiment shows that the method and the algorithm proposed are effective and feasible. |
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| Keywords: | Underwater target identification DEMON (Detection of Envelope Modulation on Noise) Extraction of shaft frequency The largest common divisor algorithm |
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