|Table of Contents|

Recognition of LFMCW Fuze Signal Based on QMFBT

《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

Issue:
2011年01期
Page:
97-101
Research Field:
Publishing date:

Info

Title:
Recognition of LFMCW Fuze Signal Based on QMFBT
Author(s):
LIU Jing1ZHAO Hui-chang1GAO Zhen-ru1
1. School of Electronic Engineering and Optoelectronic Technology,NUST,Nanjing 210094,China; 2. Institute of Engineering Corps,PLA University of Science and Technology,Nanjing 210018,China
Keywords:
electronic countermeasures signal reconnaissance quadrature mirror filter bank linear frequency modulation
PACS:
TJ434. 1
DOI:
-
Abstract:
To extract feature parameters of the fuze signal of linear frequency modulation continuous wave( LFMCW) ,the linear decomposition technique using quadrature mirror filter bank tree ( QMFBT) is adopted. With this method,the intercept signal is sampled and the discrete normalized sequence is then decomposed by QMFBT to analyze the signal character contained in different timefrequency layers. According to the fuze real-time requirements and the signal characteristics,the algorithm of the feature parameter extraction on an appropriate time-frequency layer is presented. Simulation results show that the modulation characteristics of LFMCW can be detected effectively without any prior information,and parameters can be estimated accurately in a low SNR condition. The cross terms from the non-linear transformation are eliminated and the real-time requirements are also satisfied.

References:

[1] Levanon N,Mozeson E. Radar signals[M]. New York, USA: John Wiley & Sons,2004.
[2] 吴礼,彭树生,肖泽龙,等. 对称三角线性调频连续波雷达信号多周期模糊函数分析[J]. 南京理工大学学报( 自然科学版) ,2009,33( 1) : 74-78.
[3] Dent J R. Radar fuzing system[P]. USA: 4217827, 1980-08-19.
[4] Barrenechea P,Elferink F,Janssen J. FMCW radar with broadband communication capability [A]. Proceedings of the 4th European Radar Conference [C]. Munich,Germany: IEEE Press,2007: 130-134.
[5] 王璞,杨建宇.基于乘积性模糊函数的多线性调频信号时频分布[J].电子学报,2006,34( 7) : 1351-1355.
[6] Ma N,Goh J T. Ambiguity-function-based techniques to estimate DOA of broadband chirp signals[J]. IEEE Transactions on Signal Processing,2006,54( 5) :1826-1839.
[7] Milne P R,Pace P E. Winger distribution detection and analysis of FMCW and P-4 poly-phase LPI waveforms [A]. ICASSP’02 IEEE International Conference[C]. Florida,USA: IEEE Press,2002: 2944-3947.
[8] Ristic B,Boashash B. Instantaneous frequency estimation of quadratic and cubic FM signal using the cross polynomial Wigner-Ville distribution[J]. IEEE Transactions on Signal Processing,1996,44( 6) : 1549-1553.
[9] Farrell T C,Prescott G. A low probability of intercept signal detection receiver using quadrature mirror filter bank trees[A]. ICASSP-96 Conference Proceedings, IEEE International Conference[C]. Atlanta,USA: IEEE Press,1996: 1558-1561.
[10] Copeland D B,Pace P E. Detection and analysis of FMCW and P-4 polyphase LPI waveforms using quadrature mirror filter trees[A]. ICASSP’02 IEEE International Conference[C]. Florida,USA: IEEE Press,2002: 3960-3963.

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Last Update: 2012-02-28