| 特定相位关系下谐波信号的二次相位耦合分析 |
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| 引用本文： | 周静,方剑,程玉胜.特定相位关系下谐波信号的二次相位耦合分析[J].青岛大学学报(自然科学版),2009,22(4):49-52. |
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| 作者姓名： | 周静 方剑 程玉胜 |
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| 作者单位： | 海军潜艇学院水声中心,山东,青岛,266071 |
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| 摘 要： | 从理论上推导出当谐波信号中某一分量的相位等于另外两分量的相位和加上一个固定值时，其三阶累量不为零，利用基于三阶累量的双谱估计对该信号进行检验分析时，其三维双谱图会出现峰值。数字仿真的结果表明：该条件下谐波信号的三维双谱图出现了峰值，实验结果与理论分析相吻合。
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| 关 键 词： | 双谱 二次相位耦合 谐波信号 三阶累量 |
Quadratic Phase Coupling Analysis of Harmoric Signal Under Specific Phase Relationship |
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| ZHOU Jing,FANG Jian,CHENG YU-sheng.Quadratic Phase Coupling Analysis of Harmoric Signal Under Specific Phase Relationship[J].Journal of Qingdao University(Natural Science Edition),2009,22(4):49-52. |
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| Authors: | ZHOU Jing FANG Jian CHENG YU-sheng |
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| Institution: | ( Navy Submarine Academy, Qingdao, 266071, China) |
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| Abstract: | The third-order cumulants is not zero when a component＇s phase is equal to the sum of the other two components＇ phase and a fixed value by theoretieal reasoning. The three dimensional bispeetrum chart will appear peaks when it is analysised with bispectrum which is based on third-order cumulants. Simulation results show that the three dimensional bispectrum chart appears peaks under the specified condition, and the experimental results coincide with the theoretical analysis. |
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| Keywords: | hispectrum quadratic phase coupling harmoric signals third-order cumulants |
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