Azimuth angle estimation technology of subsonic flight vehicle

被引：0
|
作者：
Wang L. [1 ]
Chen Z. [1 ]
Zhang J. [2 ,3 ]
Zhou W. [1 ]
Tong J. [3 ]
机构：
[1] The PLA Unit 91550, Dalian
[2] School of Automation, Northwestern Polytechnical University, Xi'an
[3] Institute of Acoustics, Chinese Academy of Sciences, Beijing
来源：
Guofang Keji Daxue Xuebao/Journal of National University of Defense Technology | 2021年 / 43卷 / 06期
关键词：
Aerodynamic noise; Azimuth angle estimation; Subsonic;
D O I：
10.11887/j.cn.202106019
中图分类号：
学科分类号：
摘要：
The aerodynamic noise of subsonic flight trajectory is wideband non-stationary noise. A new direction of arrival estimation algorithm based on wavelet function was proposed. The time-frequency analysis method was used to obtain the significant characteristics of the aerodynamic noise. By optimizing the characteristics of space-time spectrum, the target signal in time-frequency domain was optimized to enhance the significance of the target signal in space spectrum, effectively realizing the azimuth angle estimation of the aerodynamic noise of the subsonic flight vehicle finally. The experimental data shows that array signal processing model based on time-frequency analysis can better achieve the azimuth angle estimation of aerodynamic noise of subsonic flight vehicle. © 2021, NUDT Press. All right reserved.
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收藏
页码：163 / 169
页数：6
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