| 王程,郑小燕,王海彬.基于短时傅里叶变换的干扰信号识别方法[J].装备环境工程,2018,15(3):67-70. WANG Cheng,ZHENG Xiao-yan,WANG Hai-bin.Interference Signal Recognition Method Based on Short-time Fourier Transform[J].Equipment Environmental Engineering,2018,15(3):67-70. |
| 基于短时傅里叶变换的干扰信号识别方法 |
| Interference Signal Recognition Method Based on Short-time Fourier Transform |
| 投稿时间：2017-11-22 修订日期：2018-03-15 |
| DOI：10.7643/ issn.1672-9242.2018.03.014 |
| 中文关键词: 对地旋转弹 无线电引信 欺骗干扰识别 短时傅里叶变换 |
| 英文关键词:ground rotating artillery shell radio fuze deception jamming recognition short-time fourier transform |
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| 中文摘要: |
| 目的 提高无线电引信识别欺骗式干扰的能力。方法 根据炮弹弹体自旋的特点，使得采用连续波线极化天线的无线电引信所收到的干扰信号呈现出有别于地面回波的周期性幅度调制特征，通过对此特征进行短时傅里叶变换后进行识别，可以作为无线电引信是否受到欺骗式干扰的判断依据。结果 通过仿真和试验对方法的可行性进行了验证，表明该识别方法可以很好地提高连续波无线电引信的识别欺骗式干扰的能力。结论 基于短时傅里叶变换检测旋转调制的对地旋转弹无线电引信欺骗干扰识别的方法可以对干扰信号特征进行识别，算法处理时间短，能够作为引信是否受到干扰的一种判断依据。 |
| 英文摘要: |
| Objective To improve the ability of radio fuze to identify deception interference. Methods Due to characteristics of .missile spin, the interference signal of radio fuze received by using continuous wave linear polarization antenna received show periodic amplitude modulation characteristics different from ground echo. The characteristics were identified after short-time Fourier transform to be taken as the basis to determine whether radio fuse is subject to deception jamming. Results The feasibility of the method was verified by simulation and experiment. It showed that the recognition method can improve the ability of identifying the deceptive jamming of CW radio fuze. Conclusion The interference recognition method on ground rotating modulation rotary missile radio fuze based on short-time Fourier transform can identify characteristics of interference signal in short time of algorithm processing. It can be used as a judgement basis for whether the fuze is disturbed. |
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