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应用科学学报

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时频域子带线性调频干扰抑制算法

张晓;时兆武;吴启晖;张玉恒   

  1. 解放军理工大学 通信工程学院，江苏 南京 210007
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2007-03-20 发布日期:2007-03-20

TimeFrequency Domain Interference Suppression Algorithm for Linear Frequency Modulation

ZHANG Xiao;SHI Zhao wu;WU Qi hui;ZHANG Yu heng   

  1. Institute of Communication Engineering, PLA University of Science and Technology, Nanjing 210007, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2007-03-20 Published:2007-03-20

被引次数

3

摘要： 通过对线性调频（LFM）信号子带分解的分析，提出了一种基于子带信号处理的时频单元剔除（SSP TFCD）LFM干扰抑制算法.这种算法充分利用了子带分解的时频定位特性，在干扰基本消除的同时保证了信号的失真度较小，因此它可以为系统带来较大的性能增益.仿真结果进一步证实本算法的性能优于基于子带分解的子带剔除算法(SSP SD).

关键词: 线性调频干扰, 子带信号处理, 时频分析

Abstract: By analyzing sub band decomposition of linear frequency modulation (LFM) signals, a subband signal processing based time frequency cell delete (SSP TFCD) algorithm for LFM interference suppression is proposed. Because the algorithm makes good use of the time frequency localization feature of the subband decomposition, signal distortion is minimized when interference is deleted. Simulation results show that the proposed algorithm is superior to the SSP based subband deletion algorithm.

Key words: LFM interference, subband signal processing, time frequency analysis