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Journal of Projectiles, Rockets, Missiles and Guidance >

2013 , Vol. 33 >Issue 5: 144 - 148

DOI: https://doi.org/10.15892/j.cnki.djzdxb.2013.05.013

CORRELATION TECHNOLOGY

FRFT and Accumulative Integral Based Parameter Estimation for PRBC-LFM Continuous Signal

  • ZHU Jiandong ,
  • MA Yue ,
  • ZHAO Yongjun
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  • 1 Information Engineering University of PLA, Zhengzhou 450002, China
    2 No. 63880 Unit, Henan Luoyang 471000, China
    3 No. 95854 Unit, Beijing 101300, China

Received date: 2012-12-17

  Online published: 2025-05-26

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Abstract

In view of PRBC-LFM signal analysis, a fractional Fourier transform and accumulative integral based parameter estimation algorithm was proposed. Firstly, the square of received signal was attained to eliminate the effect of PRBC in analysis. Then the FRFT was used to estimate LFM modulation parameter which can also be adopted to reconstruct the LFM signal. The original signal was multiplied with the conjugated reconstruction LFM signal to remove carrier wave and get baseband signal PRBC. Finally, the code width and code sequence of PRBC was extracted using the inflexion point information and the change trend of accumulative integral. Compared with present methods, the proposed algorithm still take on good estimation result even in SNR = -4dB.

Key words： signal analysis; parameter estimation; fractional Fourier transform(FRFT); accumulative integral; pseudo random binary coding-linear frequency modulation(PRBC-LFM)

Cite this article

ZHU Jiandong , MA Yue , ZHAO Yongjun . FRFT and Accumulative Integral Based Parameter Estimation for PRBC-LFM Continuous Signal[J]. Journal of Projectiles, Rockets, Missiles and Guidance, 2013 , 33(5) : 144 -148 . DOI: 10.15892/j.cnki.djzdxb.2013.05.013

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