Yan Xiaopeng

Beijing Institute Of Technology, Peping, Beijing, China

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Publications (5)0 Total impact

  • Li Ping, Xu Fengkai, Yan Xiaopeng, Quan Wei
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    ABSTRACT: Analyzing an echo signal in time-domain and frequency-domain got a Pseudo-random Code PPM Fuze's channel leak, because of the nonlinear receiver in the fuze, which was the theoretical basis of jamming waveform. Numerical simulation verified correctness of jamming mechanism. A conclusion was the fuze could be jammed through channel leak.
    01/2010;
  • Li Ping, Xu Fengkai, Yan Xiaopeng, Quan Wei
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    ABSTRACT: Analyzing an echo signal in time-domain and frequency-domain got a Random pulse position modulation PD Fuze's channel leak, because of the nonlinear receiver in the fuze, which was the theoretical basis of jamming waveform. Numerical simulation verified correctness of jamming mechanism. A conclusion was the fuze could be jammed through channel leak.
    01/2010;
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    ABSTRACT: The radio fuze signal is always buried in the noise, so it is difficult to detect useful information. A new method based on the chaotic theory is introduced to detect the radio fuze signal buried in the strong noise. Starting from the analysis of the chaotic detection theory, we established the chaotic system of the radio fuze signal, analyzed the influence for chaotic system from the radio fuze signal, and put forward the chaotic detection method. Then, an exposition was made on why the chaotic system can be used to improve signal-to-noise ratio. Simulink results show the new method can detect radio fuze signal in the strong noise efficiently.
    01/2010;
  • Lv Huiying, Cao Zhiyu, Yan Xiaopeng, Li Ping
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    ABSTRACT: In this paper, we present a new method based on the theory of chaotic oscillator and wavelet transform. Chaotic systems are sensitive to certain signals and immune to noise at the same time, the properties of which demonstrate their potential application in weak signal frequency detection. However, chaotic systems are not suitable for amplitude detection of non-sinusoidal signals. Starting from the analysis of advantages and disadvantages of two signal detection methods, we put forward a combined method that takes advantage of each method to detect not only the frequency of the unknown signal but also the amplitude of the unknown signal accurately. The experimental results show that combined method gives more accurate estimation than each method.
    Computational Intelligence and Industrial Applications, 2009. PACIIA 2009. Asia-Pacific Conference on; 12/2009
  • Yan Xiaopeng, Li Ping, Liu Zili, Xu Fengkai
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    ABSTRACT: In order to evaluate the detectability of landmine, a new method based on results of metal equivalent measurement is developed. A series of studies are carried out to evaluate the detectability of landmine academically and experimentally, from the aspect of the relation between detection method and induced signal, the impact of metal mass to induced signal, and landmine metal mass equivalent detection method. In addition, by analyzing the relationship between second field signal and metal mass using the principle of low-frequency electromagnetics, it is verified that in the same detection height and the same medium, mine detector's answer output is directly proportional to the quality of metal. Thus a fitting formula of induction signal and detection height, metal mass is concluded. Experimental results prove that using the method of metal equivalent measurement to evaluate detectability of landmine is effective.
    Testing and Diagnosis, 2009. ICTD 2009. IEEE Circuits and Systems International Conference on; 01/2009