| 一种改进的Morlet小波瞬态信号检测算法 |
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| 引用本文： | 陈怒兴,郭盛桃,粟毅.一种改进的Morlet小波瞬态信号检测算法[J].系统工程与电子技术,1998(6). |
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| 作者姓名： | 陈怒兴 郭盛桃 粟毅 |
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| 作者单位： | 国防科技大学电子工程学院 |
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| 摘 要： | 噪声中的瞬态信号检测在雷达信号处理领域占据非常重要的地位。本文利用小波变换的性质，提出一种改进的Ｍｏｒｌｅｔ小波的瞬态信号检测算法。该算法在Ｍｏｒｌｅｔ小波基础上引进了线性变换的调频系数以提高小样本超宽带信号检测的检测精度。对实际实验数据及仿真信号的检测结果表明，该方法在低信噪比小样本情况下，对瞬态超宽带信号具有很好的检测性能。
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| 关 键 词： | 信号检测，瞬态响应特性测量，宽带通信 |
An Improved Morlet Wavelet Algorithm on Detection of Ultra Wide Band Signal |
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| Chen Nuxing,Guo Shengtao and Su Yi Institute of Electronic Engineering,NUDT,Changsha.An Improved Morlet Wavelet Algorithm on Detection of Ultra Wide Band Signal[J].System Engineering and Electronics,1998(6). |
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| Authors: | Chen Nuxing Guo Shengtao and Su Yi Institute of Electronic Engineering NUDT Changsha |
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| Institution: | Chen Nuxing,Guo Shengtao and Su Yi Institute of Electronic Engineering,NUDT,Changsha 410073 |
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| Abstract: | Detecting transient signal in noise plays an important role in the area of radar signal processing. Using the properties of wavelet transform, this paper proposes an improved Morlet wavelet transform algorithm. It introduces the frequency modulated coefficients to increase the precision of detection on few samples ultra wide band (UWB) signals. The detection results of simulated signals and real experiment data show that, the algorithm has perfect performance on transient UWB signal detection under the situation of low signal to noise ratio and few samples. |
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| Keywords: | Wavelet detection Transient signal Ultra wide band(UWB) signal Morlet wavelet transform |
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