| 基于小波包的信号检测算法 |
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| 引用本文： | 黄正强,张光辉,黄载禄,杨宗凯.基于小波包的信号检测算法[J].华中科技大学学报(自然科学版),1994(11). |
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| 作者姓名： | 黄正强 张光辉 黄载禄 杨宗凯 |
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| 作者单位： | 华中理工大学电子与信息工程系 |
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| 摘 要： | 针对多个相似信号分量的到达时间检测问题提出了一种基于小波包理论的新算法（ＷａｖｅｌｅｔＰａｃｋｅｔｓＤｅｔｅｃｔｉｏｎＡｌｇｏｒｉｔｈｍ，ＷＰＤＡ）．即使在各信号分量严重重叠的情况下，该算法都能非常精确地确定各分量的到达时间。为了进行比较，引用了Ｂ．Ｆｒｉｅｄｌａｎｄｅｒ提出的改进Ｇａｂｏｒ表征方法（ＩＧＲＭ）及其信号模型。实验证明，小波包检测算法可以得到更为优越的性能。还讨论了小波包检测算法中的正交镜像滤波器选择问题。
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| 关 键 词： | 信号检测 Gabor表征 小波包 |
A Signal Detecting Algorithm Based on Wavelet Packets |
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| Huang ZhengqiangDept.of Electronics & Information Eng,H.U,S.T,Wuhan .China., Zhang Guanghui, Huang Zailu, Yang Zongkai.A Signal Detecting Algorithm Based on Wavelet Packets[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,1994(11). |
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| Authors: | Huang ZhengqiangDeptof Electronics & Information Eng HU ST Wuhan China Zhang Guanghui Huang Zailu Yang Zongkai |
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| Affiliation: | Huang ZhengqiangDept.of Electronics & Information Eng,H.U,S.T,Wuhan 430074.China., Zhang Guanghui, Huang Zailu, Yang Zongkai |
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| Abstract: | For the detection of the arrival time of several similar signal components,a new algorithm based on the wavelet packets theory,the wavelet packets detection algorithm(WPDA), is developed.This algorithm is capable of accurately detecting the arrival time ofevery signal component even when the waveforms seriously overlap.As a comparison,theimproved Gabor representation method(IGRM)and signal model given by B. Friedlanderhave been used.Experiments show that better performance is achieved bv WPDA,The selection of the QMF in the WPDA is also discussed. |
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| Keywords: | signal detection Gabor representation wavelet packets |
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