| 测深信息处理的最佳小波门限滤波法 |
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| 引用本文： | 徐卫明,梁开龙,邱文东.测深信息处理的最佳小波门限滤波法[J].测绘学报,1999,28(2):133-138. |
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| 作者姓名： | 徐卫明 梁开龙 邱文东 |
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| 作者单位： | 大连舰艇学院海洋测绘系,大连,116018 |
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| 摘 要： | 针对测深数据在环境噪声处理中存在的问题，基于离散快速小波变换技术，根据信号检测中的Ｎｅｙｍａｎ－Ｐｅａｒｓｏｎ准则，本文提出了从环境噪声污染的测深信号中重构海底地形信息的最佳小波门限滤波法，从而达到了降低环境噪声对测深信息的影响。
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| 关 键 词： | 小波变换 门限选择 信噪分离 |
Optimum wavelet threshold filtering algorithm for echosounding signal processing |
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| Xu Weiming,Liang Kailong,Qiu Wendong.Optimum wavelet threshold filtering algorithm for echosounding signal processing[J].Acta Geodaetica et Cartographica Sinica,1999,28(2):133-138. |
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| Authors: | Xu Weiming Liang Kailong Qiu Wendong |
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| Abstract: | On the bases of discrete fast wavelet transform technique , this paper provides an optimum wavelet threshold filtering algorithm for reconstruction seabed topography signal from echosounding signal polluted by environment noise according to the Neyman Pearson criterion . this method can get rid of experience error in tradition filtering method validly , reduce work intensity and enhance utilization ratio of depth messages. |
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| Keywords: | Wavelet transform Threshold choice Signal and noise separate |
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