| 基于局部几何投影法的信号分离技术 |
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| 引用本文： | 姜可宇,郑兆宁,陈敬军.基于局部几何投影法的信号分离技术[J].声学技术,2001,20(3):125-128. |
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| 作者姓名： | 姜可宇 郑兆宁 陈敬军 |
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| 作者单位： | 海军工程大学电子工程学院, |
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| 摘 要： | 文章介绍了局部几何投影法的主要技术思路，提出新的覆盖修正方法和信号分离效果度量。应用该方法对理想混沌信号与调幅正弦脉冲进行分离以及对实测的湖底混响与调幅正弦脉冲进行分离。结果表明：在一定条件下，局部几何投影法对于理想混沌信号与脉冲信号的分离很有效；对实际的混响信号与某些脉冲信号的分离效果也非常好，但是该方法对于混响信号与调幅正弦脉冲信号的分离在两者中心频率相接近的时候效果不理想。
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| 关 键 词： | 局部几何投影法 信号分离 动力学模型 覆盖修正方法 理想混沌信号 调幅正弦脉冲 |
| 文章编号： | 1000-3630(2001)03-0125-04 |
| 收稿时间： | 2000/10/27 0:00:00 |
| 修稿时间： | 2000年10月27 |
Local-geometric-projection method and its application in signal separation |
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| JIANG Ke-yu,ZHENG Zhao-ning and CHEN Jing-jun.Local-geometric-projection method and its application in signal separation[J].Technical Acoustics,2001,20(3):125-128. |
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| Authors: | JIANG Ke-yu ZHENG Zhao-ning and CHEN Jing-jun |
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| Affiliation: | Institute of Electronics Engineering of Navy Engineering Vniversity, Nanjing 211800, China;Institute of Electronics Engineering of Navy Engineering Vniversity, Nanjing 211800, China;Institute of Electronics Engineering of Navy Engineering Vniversity, Nanjing 211800, China |
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| Abstract: | The principal technical content of local geometric projection method is introduced,and a new correcting method by covering and a new measurement of the effect of signal separation are put forward.With this method applied the separation of the AM sine pulse from the ideal chaotic signal and from the measured reverberation of the lake bottom are implemented. Results show that under some condition this method is effective for the separation of ideal chaotic signal from pulse signals, and the separation effect of measured reverberation from some pulse signal is very good except that the middle frequency of one signal is close to that of the other signal. |
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| Keywords: | dynamical system local geometric projection signal separation |
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