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Volume 30 Issue 5
Dec.  2010
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Zhang Shu-ning, Zhao Hui-chang, Zhang Ai-chen . The Method of Adaptive Time-varying Interference Cancellation based on FRFT for Pseudo-random Coded Fuze[J]. Journal of Electronics & Information Technology, 2008, 30(5): 1084-1087. doi: 10.3724/SP.J.1146.2006.01761
Citation: Zhang Shu-ning, Zhao Hui-chang, Zhang Ai-chen . The Method of Adaptive Time-varying Interference Cancellation based on FRFT for Pseudo-random Coded Fuze[J]. Journal of Electronics & Information Technology, 2008, 30(5): 1084-1087. doi: 10.3724/SP.J.1146.2006.01761

The Method of Adaptive Time-varying Interference Cancellation based on FRFT for Pseudo-random Coded Fuze

doi: 10.3724/SP.J.1146.2006.01761
  • Received Date: 2006-11-09
  • Rev Recd Date: 2007-04-09
  • Publish Date: 2008-05-19
  • The effect of LFM interference on pseudo-random coded fuze system is analyzed. It is found that the correlation output is deteriorated when the interference power is larger than the anti-interference limit of the fuze system. It is very necessary to excise the above interference. Because there is strong time and frequency coupling between the interference and useful signal, so the method of adaptive time-varying interference cancellation based on FRFT is proposed. The characteristic parameters of interferences are obtained by FRFT. Then the adaptive interference canceler is designed according to the estimated interference parameters. Simulation results show that the above method can effectively excise LFM interference and the correlation output is improved obviously. This method is appropriate for both single component interference and multi-component interferences and it can not be affected by across items.
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  • Amin M G, Wang Chenshu, and Lindsey A R. Optimuminterference excision in spread spectrum communicationsusing open-loop adaptive filters [J].IEEE Trans. on SP.1999,47(7):1966-1976[2]Amin M. Interference mitigation in spread spectrumcommunication system using time-frequency distributions[J].IEEE Trans. on SP.1997, 45(1):90-102[3]Amin M G and Mandapati G R. Nonstationary interferenceexcision in spread spectrum communications using projectionfiltering methods.Proc. Asilomar Conference on SignalsSystems and Computers, Pacific Grove CA, 1998: 827-831.[4]Liang Zhao, Amin M G, and Lindsey A R. Subspaceprojection techniques for anit-FM jamming GPS receivers.Proceedings of the Tenth IEEE Workshop on StatisticalSignal and Array Processing,Pocono Manor, PA, USA, 2000:529-533.[5]张居正. 伪随机码调相引信原理与设计. 制导与引信, 2003,21(3): 1-7.[6]Ojha N K and Koch D B. Impact of noise and fluctuation onthe performance of binary phase coded radar signals. The24th SSST/CSA, AL, USA, 1992: 215-218.[7]V Namias. The fractional order Fourier transform and itsapplication to quantum mechanics of quantum mechanics.Journal of Applied Math, 1980, 25(3): 241-265.[8]Ozaktas F M, Arikan O, and Kutay MA. Digital computationof the fractional Fourier transform[J].IEEE Trans. on SP.1996,44(9):2141-2150
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