计算机与数字工程2017，Vol.45Issue(4)：645-649,5.DOI:10.3969/j.issn.1672-9722.2017.04.011
低空目标被动声识别关键技术研究
Key Technologies of Low Altitude Target Passive Acoustic Recognition
雷鸣 1乔柯1
作者信息
- 1. 西安工业大学电子信息工程学院 西安 710021
- 折叠
摘要
Abstract
Low altitude target passive acoustic detection technology is playing a more and more important role in modern warfare.Some key technologies of passive acoustic recognition for low altitude targets are studied.Firstly, from the similarity of low altitude target sound signal and the characteristics of speech signal, it is proved that the low altitude target passive acoustic recognition and speech recognition can be used in the same way.Then, the time-frequency analysis of the acoustic signals of the four rotor aircraft is carried out, and a low altitude target recognition method based on MFCC parameters is proposed.Finally, the key technologies of low altitude target sound recognition technology is discussed, the MFCC in feature extraction is analyzed emphatically and simulation identification experiment is carried out using dynamic time warping (DTW) algorithm, laid the foundation for the development of low altitude target sound recognition system.关键词
被动声识别/端点检测/美尔倒谱参数/动态时间规整Key words
passive voice recognition/endpoint detection/MFCC/dynamic time warping 分类
信息技术与安全科学引用本文复制引用
雷鸣,乔柯..低空目标被动声识别关键技术研究[J].计算机与数字工程,2017,45(4):645-649,5.
