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Volume 23 Issue 3
 
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Article Navigation >  Journal of Unmanned Undersea Systems  > 2015  >  23(3): 187-195
CUI He, ZHENG Ke. Low Probability of Intercept Signal and Detection Technology for Torpedo Based on Direct Sequence Spread Spectrum[J]. Journal of Unmanned Undersea Systems, 2015, 23(3): 187-195. doi: 10.11993/j.issn.1673-1948.2015.03.006
Citation: CUI He, ZHENG Ke. Low Probability of Intercept Signal and Detection Technology for Torpedo Based on Direct Sequence Spread Spectrum[J]. Journal of Unmanned Undersea Systems, 2015, 23(3): 187-195. doi: 10.11993/j.issn.1673-1948.2015.03.006
shu

Low Probability of Intercept Signal and Detection Technology for Torpedo Based on Direct Sequence Spread Spectrum

doi: 10.11993/j.issn.1673-1948.2015.03.006

  • China Ship Research Development Academy, Beijing 100101, China

  • Publish Date: 2015-06-20
    Abstract
  • Based on the characteristics of low probability of intercept in direct sequence spread spectrum(DSSS) signal, a waveform of DSSS is designed with respect to the principle and feature of DSSS, the method for generating spread spectrum sequence, and the characteristics of the spread spectrum sequence. The best detection method for DSSS signal, i.e. the detection of matched filter, is discussed. The characteristics of low probability of intercept under ideal condition is analyzed for DSSS signal through simulation. Theoretical analysis and numerical simulation show that DSSS signal has bigger product of time and bandwidth, lower density of power spectrum, better resolution performance, random waveform, and it likes white noise, so it possesses good characteristics of low probability of intercept.

     

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