| 基于多重累积相关的LFM脉冲信号实时检测算法 |
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| 引用本文： | 姚山峰,曾安军,严 航,同武勤,余飞群.基于多重累积相关的LFM脉冲信号实时检测算法[J].电讯技术,2011,51(5):71-76. |
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| 作者姓名： | 姚山峰 曾安军 严 航 同武勤 余飞群 |
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| 作者单位： | 盲信号处理国防科技重点实验室，成都 610041;盲信号处理国防科技重点实验室，成都 610041;盲信号处理国防科技重点实验室，成都 610041;盲信号处理国防科技重点实验室，成都 610041;盲信号处理国防科技重点实验室，成都 610041 |
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| 摘 要： | 针对线性调频(LFM)脉冲信号的实时检测问题,提出了一种基于多重累积相关的检测算法.该算法根据信号与噪声具有不同的统计特性,利用LFM信号的累积相关高于噪声的累积相关的原理实现LFM脉冲信号的检测.通过二次累积改善累积相关输出的信噪比,实现对多分量微弱LFM脉冲信号的有效检测.该算法复杂度低,可以通过递推运算减小运算量...
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| 关 键 词： | 信号检测 线性调频 累积相关 低信噪比 实时处理 |
Real-time Detection of LFM Pulse Signal Based on Cumulate-Correlation |
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| YAO Shan-feng,ZENG An-jun,YAN Hang,TONG Wu-qin and YU Fei-qun.Real-time Detection of LFM Pulse Signal Based on Cumulate-Correlation[J].Telecommunication Engineering,2011,51(5):71-76. |
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| Authors: | YAO Shan-feng ZENG An-jun YAN Hang TONG Wu-qin and YU Fei-qun |
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| Institution: | National Defense Key Lab on Blind Signal Processing, Chengdu 610041, China;National Defense Key Lab on Blind Signal Processing, Chengdu 610041, China;National Defense Key Lab on Blind Signal Processing, Chengdu 610041, China;National Defense Key Lab on Blind Signal Processing, Chengdu 610041, China;National Defense Key Lab on Blind Signal Processing, Chengdu 610041, China |
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| Abstract: | In order to realize the real-time detection of linear frequency modulated(LFM)
pulse signal,a method based
on cumulate-correlation is proposed. According to the different statistica
l characteristic between signal and noise,detection of LFM pulse sig
nal is realized based on the theory that the cumulate-correlation of LFM signal
is higher than that of noise. Through multiple cumulate correlation to improve o
utput SNR, the algorithm
can effectively detect multicomponent weak LFM pulse signals. In addition, the p
roposed algorithm has lower complexity.A recursion algo
rithm is used to reduce computation to realize realtime processing. The validity
of the proposed algorit
hm is proved by simulation. |
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