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| Interference Signal Recognition Method Based on Short-time Fourier Transform |
| Received:November 22, 2017 Revised:March 15, 2018 |
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| DOI：10.7643/ issn.1672-9242.2018.03.014 |
| KeyWord:ground rotating artillery shell radio fuze deception jamming recognition short-time fourier transform |
| Author | Institution |
| WANG Cheng |
National Key Laboratory of Electromechanical Engineering and Control, Xi′an , China |
| ZHENG Xiao-yan |
National Key Laboratory of Electromechanical Engineering and Control, Xi′an , China |
| WANG Hai-bin |
National Key Laboratory of Electromechanical Engineering and Control, Xi′an , China |
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| Abstract: |
| 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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