| 飞行器目标推进系统声信号特征提取研究 |
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| 引用本文： | 陈赟,冯顺山,冯源.飞行器目标推进系统声信号特征提取研究[J].北京理工大学学报,2010,30(11):1326-1330. |
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| 作者姓名： | 陈赟 冯顺山 冯源 |
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| 作者单位： | 北京理工大学,爆炸科学与技术国家重点实验室,北京,100081;北京理工大学,爆炸科学与技术国家重点实验室,北京,100081;北京理工大学,爆炸科学与技术国家重点实验室,北京,100081 |
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| 摘 要： | 为了提取低空来袭的飞行器目标推进系统声信号的特征,分析了典型飞行器目标推进系统辐射噪声的信号特性,并建立了其推进系统辐射噪声的数学模型及被动声预警系统的接收信号模型.进而提出了基于Radon变换的LOFAR谱图线谱提取算法,以获取飞行器的推进器转速特征.通过对实测飞行器噪声数据的分析,验证了信号模型算法的合理性.
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| 关 键 词： | 近程防卫武器 推进系统噪声 低频频率分析记录 线谱特征提取 |
| 收稿时间： | 2010/1/29 0:00:00 |
Research on Extraction of Acoustic Characteristics of Aircraft Targets' Propulsion System |
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| CHEN Yun,FENG Shun-shan and FENG Yuan.Research on Extraction of Acoustic Characteristics of Aircraft Targets' Propulsion System[J].Journal of Beijing Institute of Technology(Natural Science Edition),2010,30(11):1326-1330. |
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| Authors: | CHEN Yun FENG Shun-shan and FENG Yuan |
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| Institution: | CHEN Yun,FENG Shun-shan,FENG Yuan(State Key Laboratory of Explosion Science and Technology,Beijing Institute of Technology,Beijing 100081,China) |
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| Abstract: | For the short-range defensive weapons,extracting the acoustic characteristic of attacking aircraft at low altitude is an effective way to detect and recognize the target.Firstly,the signal characteristics of radiation noise of the typical vehicle propulsion system are analyzed,thus the mathematical model of propulsion system noise and the receiving signal model of passive acoustic early-warning system are given.Furthermore,the Radon transformation based LOFAR spectrogram extraction algorithm is proposed to ... |
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| Keywords: | short-range defense system propulsion system noise low frequency analysis and recording(LOFAR)spectrogram line spectrum feature extraction |
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